/* ═══════════════════════════════════════════════════════════
   BOTTINO MONITORING SYSTEM — Design System v9
   Theme: Industrial Dark / SCADA-grade precision
   Accent: Amber #F59E0B  |  Surface: Obsidian #0C0E12
   Font: Sora (UI) + DM Mono (data)
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700&family=DM+Mono:ital,wght@0,300;0,400;0,500;1,400&display=swap');

/* ── DESIGN TOKENS ─────────────────────────────────────────── */
:root {
    /* Surfaces */
    --bg-base:        #080A0F;
    --bg-surface:     #0D1017;
    --bg-card:        #111520;
    --bg-elevated:    #161B28;
    --bg-hover:       #1C2235;
    --bg-input:       #0F1320;

    /* Borders */
    --border-subtle:  #1A2035;
    --border-base:    #212840;
    --border-focus:   #F59E0B;

    /* Accent - Amber energy */
    --accent:         #F59E0B;
    --accent-dim:     rgba(245, 158, 11, 0.12);
    --accent-glow:    rgba(245, 158, 11, 0.25);
    --accent-hover:   #FBBF24;

    /* Semantic colors */
    --success:        #10B981;
    --success-dim:    rgba(16, 185, 129, 0.12);
    --danger:         #EF4444;
    --danger-dim:     rgba(239, 68, 68, 0.12);
    --warning:        #F59E0B;
    --info:           #38BDF8;
    --info-dim:       rgba(56, 189, 248, 0.12);

    /* Text */
    --text-primary:   #E8ECF4;
    --text-secondary: #7B8DB0;
    --text-muted:     #3D4D6A;
    --text-inverse:   #080A0F;

    /* Typography */
    --font-ui:   'Sora', system-ui, sans-serif;
    --font-mono: 'DM Mono', 'JetBrains Mono', monospace;

    /* Spacing scale */
    --s1: 4px;
    --s2: 8px;
    --s3: 12px;
    --s4: 16px;
    --s5: 20px;
    --s6: 24px;
    --s8: 32px;

    /* Radii */
    --r1: 4px;
    --r2: 6px;
    --r3: 8px;
    --r4: 12px;
    --r5: 16px;

    /* Shadows */
    --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
    --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
    --shadow-lg:  0 12px 40px rgba(0,0,0,0.7);
    --shadow-glow: 0 0 24px rgba(245,158,11,0.15);
}

/* ── LIGHT THEME — same tokens, redefined ──────────────────── */
/* Symbol/SVG colors in the SCADA panel (ANSI/IEC drawings) are fixed
   electrical-standard colors and intentionally do NOT change with theme. */
:root[data-theme="light"] {
    --bg-base:        #F2F4F8;
    --bg-surface:     #FFFFFF;
    --bg-card:        #FFFFFF;
    --bg-elevated:    #FFFFFF;
    --bg-hover:       #EEF1F6;
    --bg-input:       #FFFFFF;

    --border-subtle:  #E7EBF2;
    --border-base:    #D8DEE9;
    --border-focus:   #D97706;

    --accent:         #D97706;
    --accent-dim:     rgba(217, 119, 6, 0.10);
    --accent-glow:    rgba(217, 119, 6, 0.22);
    --accent-hover:   #B45309;

    --success:        #16A34A;
    --success-dim:    rgba(22, 163, 74, 0.10);
    --danger:         #DC2626;
    --danger-dim:     rgba(220, 38, 38, 0.10);
    --warning:        #D97706;
    --info:           #0284C7;
    --info-dim:       rgba(2, 132, 199, 0.10);

    --text-primary:   #16202E;
    --text-secondary: #55677E;
    --text-muted:     #93A1B5;
    --text-inverse:   #FFFFFF;

    --shadow-sm:  0 1px 3px rgba(15,23,42,0.08);
    --shadow-md:  0 4px 16px rgba(15,23,42,0.10);
    --shadow-lg:  0 12px 40px rgba(15,23,42,0.14);
    --shadow-glow: 0 0 24px rgba(217,119,6,0.15);
}

/* ── RESET & BASE ───────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { height: 100%; }

body {
    font-family: var(--font-ui);
    background: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ── SCROLLBAR ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-base); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ═══════════════════════════════════════════════════════════
   SCREENS
   ═══════════════════════════════════════════════════════════ */
.screen { display: none; }
.screen.active { display: block; }

/* ═══════════════════════════════════════════════════════════
   LOGIN / TOKEN SCREENS
   ═══════════════════════════════════════════════════════════ */
.login-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    background: var(--bg-base);
    background-image:
        radial-gradient(ellipse 80% 60% at 50% -20%, rgba(245,158,11,0.07) 0%, transparent 70%),
        linear-gradient(180deg, var(--bg-base) 0%, var(--bg-surface) 100%);
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--border-subtle) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.3;
    pointer-events: none;
}

.login-container::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(245,158,11,0.06) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-base);
    padding: 40px;
    border-radius: var(--r5);
    box-shadow: var(--shadow-lg), 0 0 60px rgba(245,158,11,0.05);
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

.login-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--s3);
    margin-bottom: var(--s6);
}

.login-logo-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--r3);
    background: var(--accent-dim);
    border: 1px solid var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.login-card h1 {
    color: var(--text-primary);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
    text-align: center;
}

.subtitle {
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    margin-bottom: var(--s8);
    text-align: center;
    margin-top: var(--s2);
}

/* ── FORMS ──────────────────────────────────────────────────── */
.form-group { margin-bottom: var(--s5); }

.form-group label {
    display: block;
    margin-bottom: var(--s2);
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.6px;
    text-transform: uppercase;
}

.form-control {
    width: 100%;
    padding: 10px var(--s4);
    background: var(--bg-input);
    border: 1px solid var(--border-base);
    border-radius: var(--r3);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 14px;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.form-control::placeholder { color: var(--text-muted); }

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--bg-elevated);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%233D4D6A' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

textarea.form-control { resize: vertical; min-height: 80px; }
.form-actions { display: flex; gap: var(--s3); margin-top: var(--s5); }

/* ── BUTTONS ────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 18px;
    border: 1px solid transparent;
    border-radius: var(--r2);
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.18s;
    letter-spacing: 0.2px;
    white-space: nowrap;
    text-decoration: none;
}

.btn:active { transform: scale(0.97); }
.btn-full { width: 100%; }

.btn-primary {
    background: var(--accent);
    color: var(--text-inverse);
    border-color: var(--accent);
}
.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    border-color: var(--border-base);
}
.btn-secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-focus);
}

.btn-success {
    background: var(--success-dim);
    color: var(--success);
    border-color: rgba(16,185,129,0.25);
}
.btn-success:hover {
    background: rgba(16,185,129,0.2);
    box-shadow: 0 4px 14px rgba(16,185,129,0.2);
}

.btn-info {
    background: var(--info-dim);
    color: var(--info);
    border-color: rgba(56,189,248,0.25);
}
.btn-info:hover {
    background: rgba(56,189,248,0.2);
    box-shadow: 0 4px 14px rgba(56,189,248,0.2);
}

.btn-danger {
    background: var(--danger-dim);
    color: var(--danger);
    border-color: rgba(239,68,68,0.25);
    padding: 6px 13px;
    font-size: 12px;
}
.btn-danger:hover {
    background: rgba(239,68,68,0.2);
    box-shadow: 0 4px 14px rgba(239,68,68,0.2);
}

.btn-warning {
    background: var(--accent-dim);
    color: var(--accent);
    border-color: var(--accent-glow);
    padding: 6px 13px;
    font-size: 12px;
}
.btn-warning:hover { background: rgba(245,158,11,0.2); }

/* ── MESSAGES ───────────────────────────────────────────────── */
.error-message {
    margin-top: var(--s4);
    padding: 10px var(--s4);
    border-radius: var(--r2);
    display: none;
    text-align: center;
    font-size: 12px;
    font-weight: 500;
    background: var(--danger-dim);
    color: #FCA5A5;
    border: 1px solid rgba(239,68,68,0.2);
}
.error-message.show { display: block; }

.info-box {
    padding: var(--s4);
    background: var(--info-dim);
    border: 1px solid rgba(56,189,248,0.2);
    border-radius: var(--r3);
    margin-bottom: var(--s5);
}
.info-box p { margin: 4px 0; color: var(--text-secondary); font-size: 13px; }
.info-box strong { color: var(--text-primary); }

/* ═══════════════════════════════════════════════════════════
   NAVBAR
   ═══════════════════════════════════════════════════════════ */
.navbar {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0 var(--s6);
    height: 56px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 200;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--s3);
}

.navbar-brand-icon {
    width: 30px;
    height: 30px;
    border-radius: var(--r1);
    background: var(--accent-dim);
    border: 1px solid var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.navbar h1 {
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: -0.2px;
}

.navbar-status {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px var(--s3);
    background: var(--success-dim);
    border: 1px solid rgba(16,185,129,0.2);
    border-radius: var(--r1);
    font-size: 11px;
    font-weight: 600;
    color: var(--success);
    font-family: var(--font-mono);
}

.navbar-status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
    animation: pulse-dot 2s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.navbar-right { display: flex; align-items: center; gap: var(--s4); }

/* ── USER MENU ──────────────────────────────────────────────── */
.user-menu {
    display: flex;
    align-items: center;
    gap: var(--s2);
    cursor: pointer;
    position: relative;
    padding: 6px var(--s3);
    border-radius: var(--r2);
    border: 1px solid var(--border-base);
    background: var(--bg-elevated);
    transition: all 0.18s;
    user-select: none;
}

.user-menu:hover {
    border-color: var(--accent-glow);
    background: var(--bg-hover);
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: var(--r1);
    background: var(--accent-dim);
    border: 1px solid var(--accent-glow);
    color: var(--accent);
    font-weight: 700;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
}

.user-name-label {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 13px;
}

.user-caret {
    color: var(--text-muted);
    font-size: 10px;
    transition: transform 0.2s;
}

.user-menu.open .user-caret { transform: rotate(180deg); }

.user-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: var(--bg-elevated);
    border: 1px solid var(--border-base);
    border-radius: var(--r3);
    min-width: 200px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    z-index: 9999;
    animation: dropIn 0.16s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes dropIn {
    from { opacity: 0; transform: translateY(-8px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.user-dropdown.show { display: block; }

.dropdown-item {
    padding: 10px var(--s4);
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--s3);
    transition: all 0.14s;
}

.dropdown-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.dropdown-divider { border-top: 1px solid var(--border-subtle); }
.dropdown-logout { color: #FCA5A5; }
.dropdown-logout:hover { background: var(--danger-dim) !important; color: var(--danger); }

.dropdown-theme-row { display: flex; gap: 6px; padding: 10px var(--s4); }
.theme-btn {
    flex: 1;
    padding: 7px 4px;
    border-radius: var(--r2);
    border: 1px solid var(--border-base);
    background: var(--bg-input);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 11px;
    font-family: var(--font-ui);
    font-weight: 600;
    transition: all 0.14s;
}
.theme-btn:hover { color: var(--text-primary); }
.theme-btn.active { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* ═══════════════════════════════════════════════════════════
   APP LAYOUT
   ═══════════════════════════════════════════════════════════ */
.app-body {
    display: flex;
    height: calc(100vh - 56px);
    overflow: hidden;
}

/* ═══════════════════════════════════════════════════════════
   SIDEBAR
   ═══════════════════════════════════════════════════════════ */
.sidebar {
    width: 232px;
    min-width: 232px;
    background: var(--bg-surface);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    padding: var(--s3);
    gap: 2px;
    border-bottom: 1px solid var(--border-subtle);
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: var(--s3);
    padding: 9px var(--s3);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--r2);
    border: 1px solid transparent;
    transition: all 0.15s;
    cursor: pointer;
}

.sidebar-nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-base);
}

.sidebar-nav-item.active {
    background: var(--accent-dim);
    color: var(--accent);
    border-color: var(--accent-glow);
    font-weight: 600;
}

.sidebar-nav-icon { font-size: 14px; width: 18px; text-align: center; flex-shrink: 0; }
.sidebar-nav-label { letter-spacing: 0.1px; }

.sb-search-wrap { padding: var(--s3) var(--s3) var(--s2); }

.sb-search-input {
    width: 100%;
    padding: 7px var(--s3);
    background: var(--bg-input);
    border: 1px solid var(--border-base);
    border-radius: var(--r2);
    font-family: var(--font-ui);
    font-size: 12px;
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s;
}

.sb-search-input::placeholder { color: var(--text-muted); }
.sb-search-input:focus { border-color: var(--accent); }

.sidebar-pane { display: none; flex: 1; overflow-y: auto; padding: var(--s3); }
.sidebar-pane.active { display: block; }

.sb-section-title {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-muted);
    padding: var(--s3) var(--s2) var(--s2);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sb-var-list { margin-bottom: var(--s2); }

.sb-var-item {
    padding: 6px 10px;
    border-radius: var(--r2);
    font-size: 12px;
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    margin-bottom: 3px;
    background: var(--bg-card);
    cursor: default;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.12s;
}

.sb-var-item:hover { background: var(--bg-hover); border-color: var(--border-base); }
.sb-var-name { font-weight: 600; color: var(--text-primary); font-size: 11px; }
.sb-var-value { color: var(--accent); font-size: 11px; font-family: var(--font-mono); }
.sb-empty { color: var(--text-muted); font-size: 12px; padding: 8px var(--s2); }
.sb-hint { font-size: 11px; color: var(--text-muted); padding: var(--s2) var(--s2) var(--s3); line-height: 1.5; }

/* Symbol palette */
.symbol-palette {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--s2);
    padding: var(--s2) 0;
}

.symbol-item {
    background: var(--bg-card);
    border: 1px solid var(--border-base);
    border-radius: var(--r3);
    padding: 10px var(--s2);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    cursor: grab;
    font-size: 10px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.15s;
    user-select: none;
    letter-spacing: 0.3px;
}

.symbol-item:hover {
    border-color: var(--accent-glow);
    background: var(--bg-elevated);
    color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(245,158,11,0.1);
}

.symbol-item:active { cursor: grabbing; transform: scale(0.96); }
.symbol-item svg { pointer-events: none; }

/* Panel tools */
.panel-tools { display: flex; flex-direction: column; gap: var(--s2); padding: var(--s2) 0; }

.tool-btn {
    padding: 8px var(--s3);
    background: var(--bg-card);
    border: 1px solid var(--border-base);
    border-radius: var(--r2);
    font-family: var(--font-ui);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.14s;
    text-align: left;
    letter-spacing: 0.2px;
}

.tool-btn:hover { border-color: var(--accent-glow); color: var(--accent); background: var(--accent-dim); }
.tool-btn.active { background: var(--accent-dim); border-color: var(--accent-glow); color: var(--accent); }
.tool-btn-danger { color: #FCA5A5; }
.tool-btn-danger:hover { border-color: rgba(239,68,68,0.4); background: var(--danger-dim); color: var(--danger); }
.tool-btn-warn { color: var(--accent); }
.tool-btn-warn:hover { border-color: var(--accent-glow); background: var(--accent-dim); }

/* Panel list */
.panel-list { margin-bottom: var(--s2); }
.panel-list-empty { font-size: 12px; color: var(--text-muted); padding: 6px var(--s2); }

.panel-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 7px 10px;
    border-radius: var(--r2);
    margin-bottom: 3px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    transition: all 0.14s;
}

.panel-list-item:hover { background: var(--bg-hover); border-color: var(--border-base); color: var(--text-primary); }
.panel-list-item.active { background: var(--accent-dim); border-color: var(--accent-glow); color: var(--accent); }
.panel-list-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.panel-list-del {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 12px;
    padding: 2px 5px;
    border-radius: var(--r1);
    flex-shrink: 0;
    transition: all 0.14s;
}
.panel-list-del:hover { color: var(--danger); background: var(--danger-dim); }

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    padding: 0 2px;
    transition: color 0.14s;
}
.btn-icon:hover { color: var(--accent-hover); }

/* ═══════════════════════════════════════════════════════════
   MAIN CONTENT
   ═══════════════════════════════════════════════════════════ */
.main-content {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: var(--bg-base);
}

#view-variables, #view-panel {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding: var(--s6);
}
#view-variables.active, #view-panel.active { display: block; }

#view-oscilo {
    display: none;
    flex: 1;
    overflow: hidden;
}
#view-oscilo.active { display: flex; flex-direction: column; }

.view { display: none; }
.view.active { display: block; }

/* ═══════════════════════════════════════════════════════════
   TABS (content area)
   ═══════════════════════════════════════════════════════════ */
.tabs {
    display: flex;
    gap: 2px;
    margin-bottom: var(--s6);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    padding: 4px;
    border-radius: var(--r3);
    width: fit-content;
}

.tab-btn {
    padding: 7px 20px;
    background: transparent;
    border: none;
    border-radius: var(--r2);
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.18s;
    letter-spacing: 0.2px;
}

.tab-btn:hover { color: var(--text-primary); background: var(--bg-hover); }
.tab-btn.active {
    background: var(--accent);
    color: var(--text-inverse);
    box-shadow: 0 2px 8px var(--accent-glow);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ═══════════════════════════════════════════════════════════
   CONTROLS
   ═══════════════════════════════════════════════════════════ */
.controls { display: flex; gap: var(--s3); margin-bottom: var(--s5); }

/* ═══════════════════════════════════════════════════════════
   BATCH SECTION
   ═══════════════════════════════════════════════════════════ */
.batch-section {
    background: var(--bg-card);
    border: 1px solid var(--border-base);
    padding: var(--s5);
    border-radius: var(--r4);
    margin-bottom: var(--s5);
}

.batch-section h3 {
    color: var(--text-primary);
    margin-bottom: var(--s5);
    font-size: 14px;
    font-weight: 600;
}

.batch-controls { display: flex; gap: var(--s3); align-items: center; flex-wrap: wrap; }

.batch-result { margin-top: var(--s4); padding: 12px var(--s4); border-radius: var(--r2); display: none; font-size: 13px; }
.batch-result.success { display: block; background: var(--success-dim); color: #6EE7B7; border: 1px solid rgba(16,185,129,0.2); }
.batch-result.error   { display: block; background: var(--danger-dim); color: #FCA5A5; border: 1px solid rgba(239,68,68,0.2); }

/* ═══════════════════════════════════════════════════════════
   FORM SECTION
   ═══════════════════════════════════════════════════════════ */
.form-section {
    background: var(--bg-card);
    border: 1px solid var(--border-base);
    padding: var(--s5);
    border-radius: var(--r4);
    margin-bottom: var(--s5);
}

.form-section h2 {
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: var(--s5);
    letter-spacing: -0.2px;
}

/* ═══════════════════════════════════════════════════════════
   TABLES
   ═══════════════════════════════════════════════════════════ */
.table-container {
    background: var(--bg-card);
    border: 1px solid var(--border-base);
    border-radius: var(--r4);
    overflow: hidden;
}

table { width: 100%; border-collapse: collapse; }

thead {
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-base);
}

thead th {
    padding: 11px var(--s4);
    text-align: left;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
}

tbody td {
    padding: 12px var(--s4);
    border-bottom: 1px solid var(--border-subtle);
    font-size: 13px;
    color: var(--text-secondary);
}

tbody td:nth-child(1) { color: var(--text-muted); font-family: var(--font-mono); font-size: 12px; }
tbody td:nth-child(2) { color: var(--text-primary); font-weight: 600; font-family: var(--font-mono); font-size: 12px; }
tbody td:nth-child(3) { color: var(--accent); font-family: var(--font-mono); font-size: 12px; }

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg-hover); }
tbody tr:hover td { border-bottom-color: var(--border-base); }

.loading {
    text-align: center;
    color: var(--text-muted) !important;
    padding: 36px !important;
    font-family: var(--font-mono) !important;
    font-size: 12px !important;
}

.action-buttons { display: flex; gap: 6px; }

/* ═══════════════════════════════════════════════════════════
   PANEL CANVAS
   ═══════════════════════════════════════════════════════════ */
.panel-canvas-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-base);
    border-radius: var(--r4);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 120px);
}

.panel-canvas-header {
    padding: 10px var(--s5);
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
}

.panel-header-hint { font-size: 11px; color: var(--text-muted); font-weight: 400; }

.panel-canvas-container {
    flex: 1;
    overflow: hidden;
    position: relative;
    background: var(--bg-base);
    background-image:
        linear-gradient(rgba(245,158,11,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245,158,11,0.04) 1px, transparent 1px);
    background-size: 30px 30px;
}

#panel-canvas { width: 100%; height: 100%; display: block; }

/* SVG symbol elements */
.canvas-symbol { cursor: move; user-select: none; }
.canvas-symbol.selected rect.sym-body,
.canvas-symbol.selected circle.sym-body,
.canvas-symbol.selected line.sym-body,
.canvas-symbol.selected path.sym-body { stroke: var(--danger) !important; stroke-width: 2.5 !important; }
.canvas-symbol .sym-label { font-size: 10px; fill: #E8ECF4; text-anchor: middle; pointer-events: none; }
.canvas-symbol .sym-sublabel { font-size: 9px; fill: #F59E0B; text-anchor: middle; pointer-events: none; }

/* Manijas de resize del BUS: ocultas salvo que el símbolo esté seleccionado */
.canvas-symbol .bus-handle { display: none; fill: var(--accent); stroke: #1C2235; stroke-width: 1.5; cursor: ew-resize; }
.canvas-symbol.selected .bus-handle { display: block; }

/* Herramientas del panel + zoom, flotando en la esquina inferior derecha del canvas
   (accesibles ahí en vez de en la barra lateral izquierda). */
.canvas-floating-tools {
    position: absolute;
    right: 16px;
    bottom: 16px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    z-index: 5;
    background: var(--bg-card);
    border: 1px solid var(--border-base);
    border-radius: var(--r2);
    padding: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}
.canvas-floating-tools .panel-tools { padding: 0; }
.zoom-controls {
    display: flex;
    flex-direction: row;
    gap: 4px;
    border-top: 1px solid var(--border-base);
    padding-top: 10px;
}
.zoom-btn { flex: 1; }

/* Las notas de texto libre solo se ven acercando el zoom; alejado, el panel
   queda limpio mostrando solo los símbolos (las lecturas de variables en vivo
   siguen visibles siempre). */
#panel-canvas.zoomed-out .canvas-text-label,
#panel-canvas.zoomed-out .canvas-vartext-label,
#panel-canvas.zoomed-out .sym-type-txtlbl,
#panel-canvas.zoomed-out .sym-type-vartxt { display: none; }
.zoom-btn {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid rgba(245,158,11,0.35);
    background: #1C2235;
    color: #E8ECF4;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
}
.zoom-btn:hover { background: #262E45; border-color: var(--accent); }

.canvas-connection { cursor: pointer; }
.canvas-connection .conn-dot { pointer-events: none; }
.canvas-connection line,
.canvas-connection path { stroke: var(--accent); stroke-width: 2; fill: none; }
.canvas-connection.selected line,
.canvas-connection.selected path { stroke: var(--danger); }

.connect-ghost { stroke: var(--accent); stroke-width: 2; stroke-dasharray: 6 3; fill: none; pointer-events: none; }

.canvas-symbol.connecting rect,
.canvas-symbol.connecting circle,
.canvas-symbol.connecting polygon,
.canvas-symbol.connecting line,
.canvas-symbol.connecting path { stroke: #FBBF24 !important; stroke-width: 3 !important; }
.canvas-symbol.connecting { opacity: 0.8; }
.canvas-symbol.selected rect.sym-body,
.canvas-symbol.selected circle.sym-body,
.canvas-symbol.selected polygon.sym-body,
.canvas-symbol.selected line.sym-body,
.canvas-symbol.selected path.sym-body { stroke: var(--danger) !important; stroke-width: 3 !important; }

.panel-canvas-container.mode-connect { cursor: crosshair; }
.panel-canvas-container.mode-select  { cursor: default; }

/* ═══════════════════════════════════════════════════════════
   RTU ALERT BANNER
   ═══════════════════════════════════════════════════════════ */
.rtu-alert-banner {
    display: flex;
    align-items: center;
    gap: var(--s3);
    background: rgba(245,158,11,0.08);
    border-top: 1px solid rgba(245,158,11,0.3);
    color: var(--accent);
    padding: 10px var(--s5);
    font-size: 12px;
    font-weight: 600;
    animation: pulse-warn 2.5s infinite;
}

.rtu-alert-banner code {
    background: rgba(245,158,11,0.15);
    padding: 1px 6px;
    border-radius: var(--r1);
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent-hover);
}

@keyframes pulse-warn {
    0%, 100% { background: rgba(245,158,11,0.06); }
    50%       { background: rgba(245,158,11,0.12); }
}

/* ═══════════════════════════════════════════════════════════
   MODALS
   ═══════════════════════════════════════════════════════════ */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
    animation: fadeOverlay 0.2s ease;
}

@keyframes fadeOverlay { from { opacity: 0; } to { opacity: 1; } }
.modal-overlay.show { display: flex; }

.modal-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-base);
    border-radius: var(--r5);
    width: 100%;
    max-width: 520px;
    box-shadow: var(--shadow-lg), 0 0 60px rgba(245,158,11,0.05);
    animation: popIn 0.22s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-sm { max-width: 420px; }

@keyframes popIn {
    from { opacity: 0; transform: scale(0.94) translateY(-12px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    padding: 16px var(--s6);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
}

.modal-header h2 {
    font-size: 15px;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.2px;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    color: var(--text-muted);
    padding: 4px 8px;
    border-radius: var(--r1);
    transition: all 0.15s;
    line-height: 1;
}

.modal-close:hover { background: var(--danger-dim); color: var(--danger); }
.modal-body { padding: var(--s6); overflow-y: auto; flex: 1; }

.modal-footer {
    padding: 14px var(--s6);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: flex-end;
    gap: var(--s3);
    background: var(--bg-card);
    flex-wrap: wrap;
}

/* User info modal */
.user-info-grid { display: flex; gap: var(--s6); align-items: flex-start; }

.user-info-avatar-big {
    width: 60px;
    height: 60px;
    border-radius: var(--r3);
    flex-shrink: 0;
    background: var(--accent-dim);
    border: 1px solid var(--accent-glow);
    color: var(--accent);
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
}

.user-info-details { flex: 1; }

.user-info-row {
    display: flex;
    justify-content: space-between;
    padding: 9px 0;
    border-bottom: 1px solid var(--border-subtle);
}

.ui-label { color: var(--text-muted); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.ui-value { color: var(--text-primary); font-size: 13px; font-weight: 600; font-family: var(--font-mono); }

/* Modal section title */
.modal-section-title {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-muted);
    margin-bottom: var(--s3);
    margin-top: var(--s2);
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-subtle);
}

/* Form row */
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s3); }

/* Rule block */
.rule-block {
    background: var(--bg-card);
    border: 1px solid var(--border-base);
    border-radius: var(--r3);
    padding: var(--s4);
    margin-top: var(--s4);
}

.rule-current-val {
    font-size: 12px;
    color: var(--text-muted);
    background: var(--bg-input);
    border: 1px solid var(--border-base);
    border-radius: var(--r2);
    padding: 6px var(--s3);
    font-family: var(--font-mono);
}

.rule-current-val strong { color: var(--accent); }

/* Color presets */
.color-preset {
    padding: 4px 10px;
    border: none;
    border-radius: var(--r1);
    color: white;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.15s, transform 0.1s;
    opacity: 0.85;
}
.color-preset:hover { opacity: 1; transform: scale(1.07); }

/* ═══════════════════════════════════════════════════════════
   TOAST NOTIFICATIONS
   ═══════════════════════════════════════════════════════════ */
.toast-container {
    position: fixed;
    bottom: var(--s6);
    right: var(--s6);
    display: flex;
    flex-direction: column;
    gap: var(--s3);
    z-index: 99999;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--s3);
    background: var(--bg-elevated);
    border: 1px solid var(--border-base);
    border-radius: var(--r4);
    padding: 12px var(--s4);
    min-width: 280px;
    max-width: 380px;
    box-shadow: var(--shadow-lg);
    pointer-events: all;
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.3s, transform 0.3s;
}

.toast.show { opacity: 1; transform: translateX(0); }
.toast-success { border-left: 3px solid var(--success); }
.toast-error   { border-left: 3px solid var(--danger); }
.toast-warning { border-left: 3px solid var(--warning); }
.toast-info    { border-left: 3px solid var(--info); }
.toast-icon    { font-size: 16px; flex-shrink: 0; }
.toast-msg     { flex: 1; font-size: 13px; font-weight: 500; color: var(--text-primary); line-height: 1.4; }
.toast-close   {
    background: none; border: none; cursor: pointer;
    color: var(--text-muted); font-size: 13px; padding: 2px 4px; flex-shrink: 0;
    transition: color 0.14s;
}
.toast-close:hover { color: var(--text-primary); }

/* ═══════════════════════════════════════════════════════════
   CONFIRM / PROMPT MODALS
   ═══════════════════════════════════════════════════════════ */
#modal-confirm .modal-card,
#modal-prompt  .modal-card { max-width: 400px; }
#modal-confirm .btn-danger { min-width: 90px; }
#modal-prompt  .modal-body input { margin-top: 4px; }

#confirm-message, #prompt-message {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
    .app-body { flex-direction: column; }
    .sidebar { width: 100%; min-width: unset; height: 180px; border-right: none; border-bottom: 1px solid var(--border-subtle); }
    .controls { flex-wrap: wrap; }
    .batch-controls { flex-direction: column; align-items: stretch; }
    .tabs { flex-direction: column; width: 100%; }
    .table-container { overflow-x: auto; }
    .navbar h1 { font-size: 14px; }
    .login-card { padding: 28px var(--s5); }
    .navbar-status { display: none; }
}

/* ═══════════════════════════════════════════════════════════════
   OSCILLOGRAPHY MODULE
   Dark oscilloscope aesthetic PRESERVED exactly per requirements.
   Sidebar upload/channel items updated to match new theme tokens.
   ═══════════════════════════════════════════════════════════════ */

/* Sidebar: file upload area */
.osc-upload-area { padding: 10px var(--s2); }

.osc-upload-slot {
    display: flex;
    align-items: center;
    gap: var(--s2);
    padding: 7px 6px;
    background: var(--bg-card);
    border: 1px solid var(--border-base);
    border-radius: var(--r2);
    margin-bottom: 6px;
}

.osc-upload-btn {
    background: var(--accent-dim);
    color: var(--accent);
    border: 1px solid var(--accent-glow);
    border-radius: var(--r1);
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 700;
    font-family: var(--font-mono);
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
    transition: all 0.15s;
}

.osc-upload-btn:hover { background: rgba(245,158,11,0.2); }

.osc-file-name {
    font-size: 11px;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    font-family: var(--font-mono);
}

/* Sidebar: channel list */
.osc-channel-list { padding: 4px 0; }

.osc-ch-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 4px;
    border-radius: var(--r2);
    transition: background 0.1s;
}

.osc-ch-item:hover { background: var(--bg-hover); }

.osc-ch-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 6px currentColor;
}

.osc-ch-label {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    flex: 1;
}

.osc-ch-unit { font-size: 10px; color: var(--text-muted); font-weight: 400; font-family: var(--font-mono); }

.osc-fft-ch-btn {
    background: none;
    border: 1px solid var(--border-base);
    border-radius: var(--r1);
    color: var(--text-secondary);
    font-size: 11px;
    font-family: var(--font-mono);
    padding: 2px 6px;
    cursor: pointer;
    flex-shrink: 0;
    transition: all 0.14s;
}
.osc-fft-ch-btn:hover { background: var(--accent-dim); color: var(--accent); border-color: var(--accent-glow); }

/* ─── OSCILLOGRAPHY WORKSPACE (dark preserved) ─────────────── */
.osc-workspace {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: #080d14;
    overflow: hidden;
    position: relative;
}

.osc-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #111820;
    border-bottom: 1px solid #1e2a38;
    padding: 6px 14px;
    gap: 12px;
    flex-shrink: 0;
    flex-wrap: wrap;
}

.osc-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.osc-meta-item {
    font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 11px;
    color: #7a8fa6;
    letter-spacing: 0.3px;
    background: rgba(255,255,255,0.04);
    padding: 3px 8px;
    border-radius: 4px;
    border: 1px solid #1e2a38;
}

.osc-controls { display: flex; align-items: center; gap: 6px; }

.osc-ctrl-btn {
    background: #1a2535;
    color: #7a9fc0;
    border: 1px solid #253345;
    border-radius: 5px;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    font-family: monospace;
    transition: all 0.15s;
    white-space: nowrap;
}

.osc-ctrl-btn:hover {
    background: #F59E0B;
    color: #080A0F;
    border-color: #F59E0B;
}

.osc-cursor-readout {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: #4cd9ff;
    background: rgba(0,212,255,0.05);
    border: 1px solid rgba(0,212,255,0.15);
    border-radius: 5px;
    padding: 3px 12px;
    min-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 440px;
}

.osc-empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    background: radial-gradient(ellipse at center, rgba(245,158,11,0.04) 0%, transparent 70%);
}

.osc-empty-icon {
    font-size: 72px;
    margin-bottom: 18px;
    opacity: 0.2;
    animation: oscPulse 3.5s ease-in-out infinite;
    filter: drop-shadow(0 0 20px rgba(245,158,11,0.3));
}

@keyframes oscPulse {
    0%,100% { opacity: 0.15; transform: scaleY(0.95); }
    50%      { opacity: 0.35; transform: scaleY(1.05); }
}

.osc-empty-title {
    font-size: 16px;
    font-weight: 700;
    color: #2a4055;
    margin-bottom: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.osc-empty-sub  { font-size: 11px; color: #1e3044; margin-bottom: 6px; line-height: 1.7; max-width: 400px; }
.osc-empty-hint {
    font-size: 10px;
    color: rgba(245,158,11,0.25);
    background: rgba(245,158,11,0.04);
    border: 1px solid rgba(245,158,11,0.08);
    padding: 4px 14px;
    border-radius: 20px;
    margin-top: 4px;
}

.osc-chart-area {
    flex: 1;
    position: relative;
    overflow-y: auto;
    overflow-x: hidden;
    min-height: 0;
}

/* Custom scrollbar styling for chart area */
.osc-chart-area::-webkit-scrollbar {
    width: 6px;
}
.osc-chart-area::-webkit-scrollbar-track {
    background: #060810;
}
.osc-chart-area::-webkit-scrollbar-thumb {
    background: rgba(59,130,246,0.3);
    border-radius: 3px;
}
.osc-chart-area::-webkit-scrollbar-thumb:hover {
    background: rgba(59,130,246,0.6);
}

.osc-canvas {
    display: block;
    width: 100%;
    /* height is set by JS to the full virtual channel stack height */
    cursor: crosshair;
}

.osc-cursor-line {
    position: absolute;
    top: 0; bottom: 0;
    width: 1px;
    background: rgba(255,255,255,0.5);
    pointer-events: none;
}

.osc-events-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    pointer-events: none;
}

.osc-scrollbar-wrap {
    background: #060b10;
    border-top: 1px solid #0d1a26;
    padding: 5px 14px 2px;
    flex-shrink: 0;
}

.osc-scrollbar-track {
    position: relative; height: 6px;
    background: #0a1520; border-radius: 3px; margin-bottom: 4px;
}

.osc-scrollbar-thumb {
    position: absolute; top: 0; left: 0; height: 6px;
    background: #1e3a50; border-radius: 3px; cursor: grab; min-width: 20px;
    transition: background 0.15s;
}
.osc-scrollbar-thumb:hover, .osc-scrollbar-thumb:active { background: #F59E0B; cursor: grabbing; }

.osc-time-axis {
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px; color: #243040;
    display: flex; justify-content: space-between; padding: 0 4px;
}

.osc-info-panel {
    display: flex;
    gap: 0;
    background: #060b10;
    border-top: 1px solid #0d1a26;
    max-height: 150px;
    overflow: hidden;
    flex-shrink: 0;
}

.osc-events-list {
    flex: 1; overflow-y: auto;
    padding: 8px 12px;
    border-right: 1px solid #0d1a26;
}
.osc-events-list::-webkit-scrollbar { width: 4px; }
.osc-events-list::-webkit-scrollbar-track { background: transparent; }
.osc-events-list::-webkit-scrollbar-thumb { background: #2a3f55; border-radius: 2px; }

.osc-rms-panel { width: 320px; overflow-y: auto; padding: 8px 12px; flex-shrink: 0; }

.osc-panel-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(245,158,11,0.35);
    margin-bottom: 6px;
    padding-bottom: 5px;
    border-bottom: 1px solid #0d1a26;
}

.osc-event-item {
    padding: 5px 8px;
    margin-bottom: 3px;
    border-radius: 5px;
    border-left: 3px solid #F59E0B;
    background: rgba(245,158,11,0.04);
    cursor: pointer;
    transition: background 0.12s;
}
.osc-event-item:hover { background: rgba(245,158,11,0.08); }
.osc-ev-label  { font-family: monospace; font-size: 11px; font-weight: 700; color: #a8bfd6; }
.osc-ev-time   { font-family: monospace; font-size: 10px; color: #4cd9ff; }
.osc-ev-detail { font-size: 10px; color: #3d5570; margin-top: 2px; line-height: 1.4; }

.osc-rms-item {
    display: flex; gap: 8px; align-items: center;
    padding: 3px 0;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
}
.osc-rms-ch  { font-weight: 700; width: 36px; flex-shrink: 0; }
.osc-rms-val { color: #4cd9ff; font-size: 10px; }
.osc-rms-bar { flex: 1; height: 3px; background: rgba(255,255,255,0.05); border-radius: 2px; overflow: hidden; }
.osc-rms-bar-fill { height: 100%; border-radius: 2px; }

.osc-fft-overlay {
    position: absolute; inset: 0;
    background: rgba(4,8,14,0.92);
    display: flex; align-items: center; justify-content: center;
    z-index: 200; backdrop-filter: blur(6px);
}

.osc-fft-card {
    background: #090f18;
    border: 1px solid rgba(245,158,11,0.12);
    border-radius: 14px;
    padding: 20px;
    width: 820px; max-width: 96vw;
    box-shadow: 0 32px 100px rgba(0,0,0,0.8), 0 0 60px rgba(245,158,11,0.06);
}

.osc-fft-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 14px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px; font-weight: 700;
    color: #4cd9ff; letter-spacing: 0.8px;
}
.osc-fft-header button {
    background: rgba(255,255,255,0.04);
    border: 1px solid #1e3048; color: #5a7f9a;
    border-radius: 6px; padding: 4px 10px;
    cursor: pointer; font-size: 14px; transition: all 0.15s;
}
.osc-fft-header button:hover { background: rgba(220,53,69,0.15); color: #ff4d5e; border-color: rgba(220,53,69,0.3); }

#osc-fft-canvas {
    display: block; width: 100%;
    border-radius: 8px; border: 1px solid #0d1e2e;
}

.osc-fft-harmonics {
    display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px;
}

.osc-harmonic {
    background: rgba(0,212,255,0.06);
    border: 1px solid rgba(0,212,255,0.15);
    border-radius: 6px;
    padding: 4px 10px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: #4cd9ff;
    transition: background 0.15s;
}
.osc-harmonic:hover { background: rgba(0,212,255,0.12); }
.osc-harmonic.fundamental { border-color: rgba(0,255,140,0.4); color: #00ff8c; background: rgba(0,255,140,0.06); }

/* Osc view mode tabs */
.osc-view-tabs {
    display: flex;
    gap: 2px;
    background: #060b10;
    border-bottom: 1px solid #0e1a28;
    padding: 0 14px;
    flex-shrink: 0;
}

.osc-view-tab {
    padding: 7px 16px;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: #3d5166;
    border: none;
    border-bottom: 2px solid transparent;
    background: none;
    cursor: pointer;
    transition: all 0.18s;
}
.osc-view-tab:hover { color: #7ab0d0; }
.osc-view-tab.active { color: #4cd9ff; border-bottom-color: #4cd9ff; }

/* Spectrogram */
#osc-spectrogram-area {
    display: none;
    flex: 1;
    flex-direction: column;
    overflow: hidden;
    background: #080d14;
}
#osc-spectrogram-area.active { display: flex; }

.osc-spectrogram-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 16px;
    background: #0a1018;
    border-bottom: 1px solid #0e1a28;
    flex-shrink: 0;
    flex-wrap: wrap;
}

.osc-spec-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 700;
    color: #3d6080;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.osc-spec-ch-select {
    background: #101c28;
    border: 1px solid #1a2e40;
    color: #4cd9ff;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    padding: 4px 10px;
    border-radius: 5px;
    cursor: pointer;
    outline: none;
    transition: border-color 0.15s;
}
.osc-spec-ch-select:hover, .osc-spec-ch-select:focus { border-color: #4cd9ff; }

.osc-spec-colormap-select {
    background: #101c28;
    border: 1px solid #1a2e40;
    color: #a0c0d8;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    padding: 4px 10px;
    border-radius: 5px;
    cursor: pointer;
    outline: none;
}

.osc-spec-render-btn {
    background: linear-gradient(135deg, #0066aa, #004488);
    border: 1px solid #0088cc;
    color: #4cd9ff;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 700;
    padding: 5px 16px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.15s;
}
.osc-spec-render-btn:hover { background: linear-gradient(135deg, #0077cc, #005599); box-shadow: 0 0 12px rgba(0,136,204,0.3); }

.osc-spectrogram-body {
    flex: 1;
    display: flex;
    overflow: hidden;
    min-height: 0;
    position: relative;
}

.osc-spec-canvas-wrap {
    flex: 1;
    position: relative;
    overflow: hidden;
    min-height: 0;
}

#osc-spec-canvas { display: block; width: 100%; height: 100%; }

.osc-spec-empty {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: #2a4055;
    gap: 12px;
    text-align: center;
}

.osc-spec-empty-icon { font-size: 48px; opacity: 0.2; }

.osc-spec-axis-x {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 4px;
    font-family: monospace;
    font-size: 9px;
    color: #2a3f55;
}

.osc-spec-colorbar {
    width: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 4px 2px;
    background: #0a1015;
    border-left: 1px solid #1a2535;
    flex-shrink: 0;
}

.osc-spec-colorbar-gradient { flex: 1; width: 14px; border-radius: 2px; margin: 2px 0; }

.osc-spec-colorbar-label {
    font-family: monospace;
    font-size: 8px;
    color: #3d5166;
    text-align: center;
}

/* Envelope */
#osc-envelope-area {
    display: none;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
    background: #080d14;
}
#osc-envelope-area.active { display: flex; }

.osc-envelope-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 16px;
    background: #0a1018;
    border-bottom: 1px solid #0e1a28;
    flex-shrink: 0;
    flex-wrap: wrap;
}

.osc-env-controls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.osc-env-ch-toggles { display: flex; gap: 6px; flex-wrap: wrap; }

.osc-env-ch-btn {
    padding: 3px 10px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.04);
    color: #5a7f9a;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s;
    letter-spacing: 0.4px;
}
.osc-env-ch-btn.active { border-color: currentColor; background: rgba(255,255,255,0.08); filter: brightness(1.3); }
.osc-env-ch-btn:hover { filter: brightness(1.5); }

.osc-env-legend { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: #3d6080; letter-spacing: 0.5px; }

.osc-envelope-body {
    flex: 1;
    position: relative;
    overflow: hidden;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

#osc-env-canvas { flex: 1; min-height: 0; cursor: crosshair; }

#view-oscilo .osc-workspace { position: absolute; inset: 0; }
#view-oscilo { position: relative; }

/* ============================================================
   CIRCUIT BREAKER — OPERATION MODAL
   ============================================================ */

.cb-operate-card {
    max-width: 380px;
    min-width: 320px;
}

.cb-props-card {
    max-width: 540px;
}

.cb-state-display {
    background: #0e1828;
    border: 1px solid #1e3a5f;
    border-radius: 8px;
    padding: 14px 16px;
    margin-bottom: 18px;
}

.cb-state-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
}

.cb-state-label {
    color: var(--text-secondary);
    font-size: 13px;
}

.cb-state-value {
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 0.5px;
}

.cb-state-open    { color: #10B981; }
.cb-state-closed  { color: #F59E0B; }
.cb-state-error   { color: #EF4444; }
.cb-state-transit { color: var(--text-secondary); }
.cb-state-unknown { color: var(--text-muted); }
.cb-remote        { color: #EF4444; }
.cb-local         { color: #10B981; }

.cb-btn-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 4px;
}

.cb-btn-full {
    width: 100%;
    margin-bottom: 10px;
}

.cb-btn-open {
    background: var(--success-dim);
    color: #10B981;
    border: 2px solid #10B981;
    padding: 12px 8px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    letter-spacing: 0.5px;
    transition: all 0.2s;
}
.cb-btn-open:hover:not(:disabled) {
    background: #10B981;
    color: #000;
}

.cb-btn-close {
    background: var(--accent-dim);
    color: #F59E0B;
    border: 2px solid #F59E0B;
    padding: 12px 8px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    letter-spacing: 0.5px;
    transition: all 0.2s;
}
.cb-btn-close:hover:not(:disabled) {
    background: #F59E0B;
    color: #000;
}

.cb-btn-disabled {
    opacity: 0.35 !important;
    cursor: not-allowed !important;
    pointer-events: none !important;
}

.btn-warning {
    background: var(--accent-dim);
    color: #F59E0B;
    border: 2px solid #F59E0B;
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    font-size: 14px;
    letter-spacing: 0.5px;
    transition: all 0.2s;
}
.btn-warning:hover {
    background: #F59E0B;
    color: #000;
}

.cb-block-msg {
    margin-top: 14px;
    padding: 12px 14px;
    border-radius: 8px;
    font-size: 13px;
    line-height: 1.5;
    text-align: center;
}
.cb-block-remote {
    background: var(--danger-dim);
    border: 1px solid #EF4444;
    color: #EF4444;
}
.cb-block-lock {
    background: var(--accent-dim);
    border: 1px solid #F59E0B;
    color: #F59E0B;
}

.cb-sbo-hint {
    background: var(--info-dim);
    border: 1px solid #38BDF8;
    color: #38BDF8;
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 12px;
    text-align: center;
    margin-bottom: 12px;
}

.cb-sbo-timer {
    text-align: center;
    font-size: 12px;
    color: #F59E0B;
    margin-bottom: 10px;
    font-weight: 600;
}

/* CB symbol sublabel coloring on canvas */
.cb-state-open-label    { fill: #10B981 !important; }
.cb-state-closed-label  { fill: #F59E0B !important; }
.cb-state-error-label   { fill: #EF4444 !important; }

/* CB config section inside symbol props */
.cb-toggle-row {
    margin-bottom: 4px;
}
.cb-toggle-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: #ccc;
    font-size: 13px;
}
.cb-toggle-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: #667eea;
}

.cb-btn-config {
    background: transparent;
    color: #667eea;
    border: 1px solid #667eea;
    padding: 7px 14px;
    border-radius: 7px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}
.cb-btn-config:hover {
    background: #667eea;
    color: #fff;
}

/* ============================================================
   ROLE BADGE
   ============================================================ */
.user-role-badge {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.8px;
    padding: 2px 7px;
    border-radius: 4px;
    text-transform: uppercase;
    margin-left: 4px;
}
.role-configurador {
    background: rgba(102, 126, 234, 0.2);
    color: #667eea;
    border: 1px solid #667eea44;
}
.role-operador {
    background: rgba(16, 185, 129, 0.2);
    color: #10B981;
    border: 1px solid #10B98144;
}

/* ============================================================
   THREE-DOT MENU
   ============================================================ */
.three-dot-wrapper {
    position: relative;
    display: inline-block;
}
.btn-three-dot {
    background: rgba(255,255,255,0.08) !important;
    color: #e0e0e0 !important;
    border: 1px solid rgba(255,255,255,0.15) !important;
    font-size: 20px !important;
    line-height: 1 !important;
    padding: 4px 10px !important;
    letter-spacing: 1px;
    border-radius: 6px !important;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-three-dot:hover {
    background: rgba(255,255,255,0.16) !important;
}
.dot-menu {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 4px);
    background: #1e2235;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    list-style: none;
    padding: 6px 0;
    margin: 0;
    min-width: 230px;
    z-index: 9999;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}
.dot-menu.open {
    display: block;
}
.dot-menu li {
    padding: 10px 16px;
    cursor: pointer;
    font-size: 13px;
    color: #c8d0e0;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s;
    border-radius: 4px;
    margin: 0 4px;
}
.dot-menu li:hover {
    background: rgba(255,180,0,0.12);
    color: #FFB400;
}
.dot-menu li.active-item {
    color: #4ECDC4;
}
.dot-menu li.active-item:hover {
    background: rgba(78,205,196,0.1);
    color: #4ECDC4;
}

/* ============================================================
   VER VARIABLES BUTTON
   ============================================================ */
.btn-history-view {
    background: linear-gradient(135deg, #1a3a5c, #1e4d7a) !important;
    color: #45B7D1 !important;
    border: 1px solid #45B7D144 !important;
    font-size: 12px !important;
    padding: 6px 10px !important;
    border-radius: 6px !important;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.btn-history-view:hover {
    background: linear-gradient(135deg, #1e4d7a, #2563a8) !important;
    color: #7dd3fc !important;
    border-color: #45B7D188 !important;
}

/* ============================================================
   HISTORY CHART MODAL
   ============================================================ */
.modal-history {
    width: 90vw;
    max-width: 900px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}
.modal-history .modal-body {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.hm-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    padding: 10px 0 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    margin-bottom: 14px;
}
.hm-toggle-group {
    display: flex;
    align-items: center;
    gap: 6px;
}
.hm-label {
    font-size: 12px;
    color: #9fa8c0;
    font-weight: 600;
    margin-right: 2px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.hm-chart-btn, .hm-track-btn {
    background: rgba(255,255,255,0.06) !important;
    color: #9fa8c0 !important;
    border: 1px solid rgba(255,255,255,0.1) !important;
    font-size: 12px !important;
    padding: 5px 12px !important;
    border-radius: 6px !important;
    cursor: pointer;
    transition: all 0.18s;
}
.hm-chart-btn:hover, .hm-track-btn:hover {
    background: rgba(255,180,0,0.1) !important;
    color: #FFB400 !important;
}
.hm-chart-btn.active, .hm-track-btn.active {
    background: rgba(255,180,0,0.18) !important;
    color: #FFB400 !important;
    border-color: #FFB40044 !important;
    font-weight: 600;
}
.hm-chart-container {
    flex: 1;
    position: relative;
    min-height: 300px;
    max-height: 440px;
}
.hm-chart-container canvas {
    width: 100% !important;
    height: 100% !important;
}
.hm-state-msg {
    text-align: center;
    color: #9fa8c0;
    padding: 60px 20px;
    font-size: 14px;
    line-height: 1.7;
}
.hm-state-msg small {
    color: #6b7280;
    font-size: 12px;
}

/* ============================================================
   IED STYLES
   ============================================================ */
.ied-signal-row {
    display: flex;
    gap: 6px;
    align-items: center;
}
.ied-signal-row .form-control {
    font-size: 12px;
    padding: 4px 8px;
    height: 32px;
}
.ied-light {
    transition: opacity 0.15s;
}
@keyframes ied-blink {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.15; }
}
.ied-light-blink {
    animation: ied-blink 0.8s ease-in-out infinite;
}