/* ============================================================
   TULA TRON THEME — Dark mode inspired by the TRON universe
   Neon cyan (#00f0ff), warm orange (#ff6f00), deep blacks
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;700;900&family=Share+Tech+Mono&family=Poppins:wght@400;600;700&display=swap');

:root {
    --tron-bg:          #0a0a12;
    --tron-surface:     #0d0d1a;
    --tron-surface2:    #111126;
    --tron-border:      #1a1a3e;
    --tron-cyan:        #00f0ff;
    --tron-cyan-dim:    #007a82;
    --tron-cyan-glow:   rgba(0, 240, 255, 0.35);
    --tron-orange:      #ff6f00;
    --tron-orange-glow: rgba(255, 111, 0, 0.3);
    --tron-magenta:     #ff2d95;
    --tron-text:        #c8d6e5;
    --tron-text-bright: #e8f0fe;
    --tron-text-muted:  #5c6b7a;
    --tron-success:     #00ff88;
    --tron-danger:      #ff3355;
    --tron-warning:     #ffaa00;
    --font-display:     'Orbitron', sans-serif;
    --font-mono:        'Share Tech Mono', monospace;
}

/* ---- Global ---- */
html {
    font-size: 14px;
    position: relative;
    min-height: 100%;
}
@media (min-width: 768px) {
    html { font-size: 16px; }
}

body {
    background: var(--tron-bg);
    color: var(--tron-text);
    font-family: var(--font-mono);
    margin-bottom: 60px;
}

/* Subtle grid background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        linear-gradient(rgba(0,240,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,240,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: -1;
}

::selection {
    background: var(--tron-cyan);
    color: var(--tron-bg);
}

a { color: var(--tron-cyan); transition: all 0.2s; }
a:hover { color: #fff; text-shadow: 0 0 8px var(--tron-cyan-glow); }

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    color: var(--tron-text-bright);
    letter-spacing: 1px;
}
h1 { text-shadow: 0 0 20px var(--tron-cyan-glow); }

code {
    color: var(--tron-cyan);
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.15);
    border-radius: 3px;
    padding: 1px 5px;
    font-family: var(--font-mono);
}

/* ---- Top Bar ---- */
.navbar {
    background: linear-gradient(180deg, var(--tron-surface) 0%, var(--tron-bg) 100%) !important;
    border-bottom: 1px solid var(--tron-cyan-dim) !important;
    box-shadow: 0 1px 20px var(--tron-cyan-glow);
    padding: 0.5rem 0;
}
.navbar-brand {
    font-family: var(--font-display) !important;
    font-weight: 900 !important;
    font-size: 1.3rem !important;
    color: var(--tron-cyan) !important;
    text-shadow: 0 0 12px var(--tron-cyan-glow);
    letter-spacing: 3px;
    text-transform: uppercase;
}
.navbar-brand:hover {
    color: #fff !important;
    text-shadow: 0 0 20px var(--tron-cyan), 0 0 40px var(--tron-cyan-glow);
}

/* ---- Hamburger Button ---- */
.tron-hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: 6px;
    background: transparent;
    border: 1px solid var(--tron-cyan-dim);
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.3s;
}
.tron-hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--tron-cyan);
    border-radius: 1px;
    transition: all 0.3s;
    box-shadow: 0 0 4px var(--tron-cyan-glow);
}
.tron-hamburger:hover {
    border-color: var(--tron-cyan);
    box-shadow: 0 0 12px var(--tron-cyan-glow);
}
.tron-hamburger:hover span {
    box-shadow: 0 0 8px var(--tron-cyan-glow);
}

/* ============================================================
   PINNABLE SIDEBAR
   ============================================================ */
:root {
    --sidebar-width: 260px;
}

/* Sidebar panel — hidden by default */
.tron-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--tron-surface);
    border-right: 1px solid var(--tron-cyan-dim);
    box-shadow: 4px 0 30px rgba(0, 0, 0, 0.6), 1px 0 15px var(--tron-cyan-glow);
    display: flex;
    flex-direction: column;
    z-index: 1050;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

/* Sidebar header */
.tron-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--tron-border);
    flex-shrink: 0;
}
.tron-sidebar-brand {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 1.1rem;
    color: var(--tron-cyan);
    text-shadow: 0 0 10px var(--tron-cyan-glow);
    letter-spacing: 3px;
    text-transform: uppercase;
    text-decoration: none;
}
.tron-sidebar-brand:hover {
    color: #fff;
    text-shadow: 0 0 20px var(--tron-cyan);
    text-decoration: none;
}

/* Pin button */
.tron-pin-btn {
    background: transparent;
    border: 1px solid var(--tron-border);
    border-radius: 3px;
    color: var(--tron-text-muted);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    padding: 0;
}
.tron-pin-btn:hover {
    border-color: var(--tron-cyan);
    color: var(--tron-cyan);
}
/* Pin button active state when pinned */
.sidebar-pinned .tron-pin-btn {
    background: var(--tron-cyan);
    border-color: var(--tron-cyan);
    color: var(--tron-bg);
    box-shadow: 0 0 8px var(--tron-cyan-glow);
}

/* Sidebar body — scrollable nav */
.tron-sidebar-body {
    flex: 1;
    overflow-y: auto;
}

/* Sidebar footer */
.tron-sidebar-footer {
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--tron-border);
    flex-shrink: 0;
    color: var(--tron-text-muted);
    font-family: var(--font-mono);
    font-size: 0.6rem;
}

/* Overlay backdrop for unpinned-open state */
.tron-sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(2px);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

/* Main content area */
.tron-main {
    transition: margin-left 0.3s ease;
    min-height: 100vh;
}

/* ---- STATE: Sidebar open (unpinned, overlay mode) ---- */
.sidebar-open .tron-sidebar {
    transform: translateX(0);
}
.sidebar-open .tron-sidebar-overlay {
    opacity: 1;
    visibility: visible;
}

/* ---- STATE: Sidebar pinned (persistent, content shifts) ---- */
.sidebar-pinned .tron-sidebar {
    transform: translateX(0);
}
.sidebar-pinned .tron-main {
    margin-left: var(--sidebar-width);
}
.sidebar-pinned .tron-sidebar-overlay {
    display: none;
}

/* On small screens, never pin — always overlay */
@media (max-width: 768px) {
    .sidebar-pinned .tron-main {
        margin-left: 0;
    }
    .sidebar-pinned .tron-sidebar {
        transform: translateX(-100%);
    }
    /* Show sidebar on small screens only when explicitly open */
    .sidebar-pinned.sidebar-open .tron-sidebar,
    .sidebar-open .tron-sidebar {
        transform: translateX(0);
    }
    .sidebar-pinned .tron-sidebar-overlay {
        display: block;
    }
}

/* ---- Sidebar Navigation ---- */
.tron-nav {
    padding: 0.5rem 0;
}
.tron-nav-section {
    padding: 0.25rem 0;
}
.tron-nav-section + .tron-nav-section {
    border-top: 1px solid var(--tron-border);
}
.tron-nav-heading {
    font-family: var(--font-display);
    font-size: 0.55rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--tron-cyan-dim);
    padding: 0.75rem 1.25rem 0.25rem;
}
.tron-nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1.25rem;
    color: var(--tron-text);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}
.tron-nav-link:hover {
    background: rgba(0, 240, 255, 0.04);
    color: var(--tron-cyan);
    border-left-color: var(--tron-cyan);
    text-shadow: 0 0 6px var(--tron-cyan-glow);
    text-decoration: none;
}
.tron-nav-link:active {
    background: rgba(0, 240, 255, 0.08);
}
.tron-nav-icon {
    font-size: 1rem;
    width: 20px;
    text-align: center;
    opacity: 0.6;
    transition: opacity 0.2s;
}
.tron-nav-link:hover .tron-nav-icon {
    opacity: 1;
}

/* ---- Container ---- */
.container {
    max-width: 1200px;
}

/* ---- Cards ---- */
.card, .tron-card {
    background: var(--tron-surface);
    border: 1px solid var(--tron-border);
    border-radius: 4px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.5), inset 0 0 1px var(--tron-cyan-dim);
    transition: border-color 0.3s, box-shadow 0.3s;
}
.card:hover, .tron-card:hover {
    border-color: var(--tron-cyan-dim);
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.1), inset 0 0 1px var(--tron-cyan);
}
.card-body { background: transparent; }
.card-title { color: var(--tron-text-bright); }

/* ---- Tables ---- */
.table {
    --bs-table-bg: var(--tron-surface);
    --bs-table-color: var(--tron-text);
    --bs-table-border-color: var(--tron-border);
    --bs-table-striped-bg: var(--tron-surface2);
    --bs-table-hover-bg: rgba(0, 240, 255, 0.05);
    --bs-table-hover-color: var(--tron-text-bright);
    border-color: var(--tron-border);
}
.table thead {
    background: var(--tron-surface2) !important;
}
.table-dark {
    --bs-table-bg: var(--tron-surface2) !important;
    --bs-table-color: var(--tron-cyan) !important;
    --bs-table-border-color: var(--tron-border) !important;
}
.table thead th {
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--tron-cyan) !important;
    border-bottom: 2px solid var(--tron-cyan-dim) !important;
}

/* ---- Forms ---- */
.form-control, .form-select {
    background: var(--tron-surface2);
    border: 1px solid var(--tron-border);
    color: var(--tron-text-bright);
    font-family: var(--font-mono);
    transition: border-color 0.3s, box-shadow 0.3s;
}
.form-control:focus, .form-select:focus {
    background: var(--tron-surface);
    border-color: var(--tron-cyan);
    color: var(--tron-text-bright);
    box-shadow: 0 0 0 0.15rem var(--tron-cyan-glow);
}
.form-control::placeholder {
    color: var(--tron-text-muted);
}
.form-control:disabled {
    background: var(--tron-bg);
    color: var(--tron-text-muted);
    border-color: var(--tron-border);
}
.form-label {
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--tron-cyan);
    margin-bottom: 0.3rem;
}
.form-text {
    color: var(--tron-text-muted);
}
.form-check-input {
    background-color: var(--tron-surface2);
    border-color: var(--tron-border);
}
.form-check-input:checked {
    background-color: var(--tron-cyan);
    border-color: var(--tron-cyan);
}
.form-check-input:focus {
    box-shadow: 0 0 0 0.15rem var(--tron-cyan-glow);
    border-color: var(--tron-cyan);
}
.form-check-label {
    color: var(--tron-text);
}

/* ---- Buttons ---- */
.btn {
    font-family: var(--font-display);
    font-size: 0.75rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border-radius: 2px;
    transition: all 0.25s;
}
.btn-primary {
    background: transparent;
    color: var(--tron-cyan);
    border: 1px solid var(--tron-cyan);
    box-shadow: 0 0 8px var(--tron-cyan-glow);
}
.btn-primary:hover, .btn-primary:focus {
    background: var(--tron-cyan);
    color: var(--tron-bg);
    box-shadow: 0 0 20px var(--tron-cyan-glow), 0 0 40px rgba(0, 240, 255, 0.15);
}
.btn-secondary {
    background: transparent;
    color: var(--tron-text);
    border: 1px solid var(--tron-text-muted);
}
.btn-secondary:hover {
    background: var(--tron-text-muted);
    color: var(--tron-bg);
}
.btn-outline-secondary {
    color: var(--tron-text);
    border-color: var(--tron-text-muted);
}
.btn-outline-secondary:hover {
    background: var(--tron-text-muted);
    color: var(--tron-bg);
}
.btn-outline-warning {
    color: var(--tron-warning);
    border-color: var(--tron-warning);
}
.btn-outline-warning:hover {
    background: var(--tron-warning);
    color: var(--tron-bg);
}
.btn-outline-danger {
    color: var(--tron-danger);
    border-color: var(--tron-danger);
}
.btn-outline-danger:hover {
    background: var(--tron-danger);
    color: #fff;
}
.btn-success, .btn-outline-success {
    border-color: var(--tron-success);
    color: var(--tron-success);
    background: transparent;
}
.btn-success:hover, .btn-outline-success:hover {
    background: var(--tron-success);
    color: var(--tron-bg);
}
.btn-orange {
    background: transparent;
    color: var(--tron-orange);
    border: 1px solid var(--tron-orange);
    box-shadow: 0 0 8px var(--tron-orange-glow);
}
.btn-orange:hover {
    background: var(--tron-orange);
    color: var(--tron-bg);
    box-shadow: 0 0 20px var(--tron-orange-glow);
}

/* ---- Badges ---- */
.badge.bg-success { background: var(--tron-success) !important; color: var(--tron-bg) !important; }
.badge.bg-danger { background: var(--tron-danger) !important; color: #fff !important; }
.badge.bg-warning { background: var(--tron-warning) !important; color: var(--tron-bg) !important; }
.badge.bg-info { background: var(--tron-cyan) !important; color: var(--tron-bg) !important; }

/* ---- Alerts ---- */
.alert {
    background: var(--tron-surface);
    border-radius: 2px;
    font-family: var(--font-mono);
}
.alert-info {
    border: 1px solid var(--tron-cyan-dim);
    color: var(--tron-cyan);
}
.alert-success {
    border: 1px solid var(--tron-success);
    color: var(--tron-success);
}
.alert-danger {
    border: 1px solid var(--tron-danger);
    color: var(--tron-danger);
}

/* ---- Footer ---- */
.footer {
    background: var(--tron-surface);
    border-top: 1px solid var(--tron-border) !important;
    color: var(--tron-text-muted);
    padding: 1rem 0;
    position: absolute;
    bottom: 0;
    width: 100%;
}
.footer a {
    color: var(--tron-cyan-dim);
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--tron-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--tron-border);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--tron-cyan-dim);
}

/* ---- Tron Glow Divider ---- */
.tron-divider {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--tron-cyan-dim), var(--tron-cyan), var(--tron-cyan-dim), transparent);
    box-shadow: 0 0 8px var(--tron-cyan-glow);
    margin: 2rem 0;
}

/* ---- Tron Panel ---- */
.tron-panel {
    background: var(--tron-surface);
    border: 1px solid var(--tron-border);
    border-radius: 4px;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}
.tron-panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--tron-cyan), transparent);
}
.tron-panel-orange::before {
    background: linear-gradient(90deg, transparent, var(--tron-orange), transparent);
}

/* ---- Stat Hex ---- */
.tron-stat {
    text-align: center;
    padding: 1rem;
}
.tron-stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--tron-cyan);
    text-shadow: 0 0 15px var(--tron-cyan-glow);
    line-height: 1;
}
.tron-stat-label {
    font-family: var(--font-display);
    font-size: 0.6rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--tron-text-muted);
    margin-top: 0.5rem;
}

/* ============================================================
   BODYGRAPH STYLES
   ============================================================ */

.bodygraph-container {
    position: relative;
    max-width: 480px;
    margin: 0 auto;
}

/* Center nodes */
.bg-center {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 2;
}
.bg-center-shape {
    fill: var(--tron-surface2);
    stroke: var(--tron-cyan-dim);
    stroke-width: 1.5;
    transition: all 0.3s;
}
.bg-center:hover .bg-center-shape,
.bg-center.defined .bg-center-shape {
    stroke: var(--tron-cyan);
    filter: drop-shadow(0 0 6px var(--tron-cyan-glow));
}
.bg-center.defined .bg-center-shape {
    fill: rgba(0, 240, 255, 0.1);
}
.bg-center-label {
    font-family: var(--font-display);
    font-size: 0.5rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    fill: var(--tron-text-muted);
    text-anchor: middle;
    pointer-events: none;
}
.bg-center.defined .bg-center-label {
    fill: var(--tron-cyan);
}

/* Channels */
.bg-channel {
    stroke: var(--tron-border);
    stroke-width: 2;
    fill: none;
    transition: all 0.3s;
}
.bg-channel.defined {
    stroke: var(--tron-cyan);
    filter: drop-shadow(0 0 4px var(--tron-cyan-glow));
}
.bg-channel.orange {
    stroke: var(--tron-orange);
    filter: drop-shadow(0 0 4px var(--tron-orange-glow));
}

/* Gate toggles */
.gate-toggle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--tron-border);
    background: var(--tron-surface2);
    color: var(--tron-text-muted);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.25s;
    padding: 0;
}
.gate-toggle:hover {
    border-color: var(--tron-cyan);
    color: var(--tron-cyan);
}
.gate-toggle.active {
    background: var(--tron-cyan);
    color: var(--tron-bg);
    border-color: var(--tron-cyan);
    box-shadow: 0 0 10px var(--tron-cyan-glow);
}
.gate-toggle.active.personality {
    background: var(--tron-cyan);
}
.gate-toggle.active.design {
    background: var(--tron-orange);
    border-color: var(--tron-orange);
    box-shadow: 0 0 10px var(--tron-orange-glow);
}
.gate-toggle.active.both {
    background: linear-gradient(135deg, var(--tron-cyan) 50%, var(--tron-orange) 50%);
    border-color: var(--tron-cyan);
    box-shadow: 0 0 10px var(--tron-cyan-glow), 0 0 10px var(--tron-orange-glow);
}

/* Gate grid */
.gate-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 6px;
    justify-items: center;
}

/* Legend */
.legend-swatch {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    margin-right: 6px;
    vertical-align: middle;
}
.legend-swatch.personality { background: var(--tron-cyan); box-shadow: 0 0 6px var(--tron-cyan-glow); }
.legend-swatch.design { background: var(--tron-orange); box-shadow: 0 0 6px var(--tron-orange-glow); }

/* Pulse animation for active centers */
@keyframes tron-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}
.tron-pulse {
    animation: tron-pulse 2s ease-in-out infinite;
}

/* Scan line effect */
@keyframes scanline {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100vh); }
}
.tron-scanline::after {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(180deg, transparent, rgba(0,240,255,0.06), transparent);
    animation: scanline 8s linear infinite;
    pointer-events: none;
    z-index: 9999;
}

/* ============================================================
   THEME TOGGLE BUTTON
   ============================================================ */
.tron-theme-toggle {
    background: transparent;
    border: 1px solid var(--tron-border);
    border-radius: 3px;
    color: var(--tron-text-muted);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    padding: 0;
    font-size: 1.1rem;
    line-height: 1;
}
.tron-theme-toggle:hover {
    border-color: var(--tron-cyan);
    color: var(--tron-cyan);
}

/* ============================================================
   TULA LIGHT MODE — Based on livetula.com style guide
   Poppins font, Navy #002F3F, Green #128040, Orange #F17922,
   Light Blue #EAF6FA backgrounds
   ============================================================ */
html.theme-light {
    --tron-bg:          #FFFFFF;
    --tron-surface:     #EAF6FA;
    --tron-surface2:    #F5FAFE;
    --tron-border:      #D0DDE5;
    --tron-cyan:        #002F3F;
    --tron-cyan-dim:    #456878;
    --tron-cyan-glow:   rgba(0, 47, 63, 0.12);
    --tron-orange:      #F17922;
    --tron-orange-glow: rgba(241, 121, 34, 0.15);
    --tron-magenta:     #D63384;
    --tron-text:        #313131;
    --tron-text-bright: #002F3F;
    --tron-text-muted:  #6C7A84;
    --tron-success:     #128040;
    --tron-danger:      #DC3545;
    --tron-warning:     #F17922;
    --font-display:     'Poppins', sans-serif;
    --font-mono:        'Poppins', sans-serif;
}

/* ---- Light: Remove dark-mode effects ---- */
html.theme-light body {
    background: #FFFFFF;
    color: #313131;
}
html.theme-light body::before {
    display: none; /* remove grid background */
}
html.theme-light .tron-scanline::after {
    display: none; /* remove scanline */
}
html.theme-light ::selection {
    background: #F17922;
    color: #FFFFFF;
}

/* ---- Light: Links ---- */
html.theme-light a { color: #002F3F; }
html.theme-light a:hover { color: #F17922; text-shadow: none; }

/* ---- Light: Headings ---- */
html.theme-light h1, html.theme-light h2, html.theme-light h3,
html.theme-light h4, html.theme-light h5, html.theme-light h6 {
    color: #002F3F;
    font-family: 'Poppins', sans-serif;
}
html.theme-light h1 { text-shadow: none; }

/* ---- Light: Code ---- */
html.theme-light code {
    color: #002F3F;
    background: rgba(0, 47, 63, 0.06);
    border-color: rgba(0, 47, 63, 0.12);
}

/* ---- Light: Navbar ---- */
html.theme-light .navbar {
    background: #FFFFFF !important;
    border-bottom: 2px solid #EAF6FA !important;
    box-shadow: 0 2px 12px rgba(0, 47, 63, 0.06);
}
html.theme-light .navbar-brand {
    color: #002F3F !important;
    text-shadow: none;
    font-family: 'Poppins', sans-serif !important;
    font-weight: 700 !important;
    letter-spacing: 4px;
}
html.theme-light .navbar-brand:hover {
    color: #F17922 !important;
    text-shadow: none;
}

/* ---- Light: Hamburger ---- */
html.theme-light .tron-hamburger {
    border-color: #D0DDE5;
}
html.theme-light .tron-hamburger span {
    background: #002F3F;
    box-shadow: none;
}
html.theme-light .tron-hamburger:hover {
    border-color: #002F3F;
    box-shadow: none;
}

/* ---- Light: Sidebar ---- */
html.theme-light .tron-sidebar {
    background: #FFFFFF;
    border-right: 2px solid #EAF6FA;
    box-shadow: 4px 0 20px rgba(0, 47, 63, 0.08);
}
html.theme-light .tron-sidebar-header {
    border-bottom: 1px solid #EAF6FA;
}
html.theme-light .tron-sidebar-brand {
    color: #002F3F;
    text-shadow: none;
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
}
html.theme-light .tron-sidebar-brand:hover {
    color: #F17922;
    text-shadow: none;
}
html.theme-light .tron-pin-btn {
    border-color: #D0DDE5;
    color: #6C7A84;
}
html.theme-light .tron-pin-btn:hover {
    border-color: #002F3F;
    color: #002F3F;
}
html.theme-light.sidebar-pinned .tron-pin-btn {
    background: #002F3F;
    border-color: #002F3F;
    color: #FFFFFF;
    box-shadow: none;
}
html.theme-light .tron-sidebar-footer {
    border-top: 1px solid #EAF6FA;
    color: #ABB8C3;
}
html.theme-light .tron-nav-section + .tron-nav-section {
    border-top-color: #EAF6FA;
}
html.theme-light .tron-nav-heading {
    color: #ABB8C3;
    font-family: 'Poppins', sans-serif;
}
html.theme-light .tron-nav-link {
    color: #313131;
    font-family: 'Poppins', sans-serif;
    border-left-color: transparent;
}
html.theme-light .tron-nav-link:hover {
    background: rgba(0, 47, 63, 0.04);
    color: #002F3F;
    border-left-color: #128040;
    text-shadow: none;
}
html.theme-light .tron-sidebar-overlay {
    background: rgba(0, 47, 63, 0.2);
    backdrop-filter: blur(1px);
}

/* ---- Light: Cards & Panels ---- */
html.theme-light .card, html.theme-light .tron-card {
    background: #FFFFFF;
    border-color: #EAF6FA;
    box-shadow: 0 2px 8px rgba(0, 47, 63, 0.06);
}
html.theme-light .card:hover, html.theme-light .tron-card:hover {
    border-color: #D0DDE5;
    box-shadow: 0 4px 16px rgba(0, 47, 63, 0.10);
}
html.theme-light .tron-panel {
    background: #FFFFFF;
    border-color: #EAF6FA;
    box-shadow: 0 2px 8px rgba(0, 47, 63, 0.06);
}
html.theme-light .tron-panel::before {
    background: linear-gradient(90deg, transparent, #128040, transparent);
}
html.theme-light .tron-panel-orange::before {
    background: linear-gradient(90deg, transparent, #F17922, transparent);
}

/* ---- Light: Tables ---- */
html.theme-light .table {
    --bs-table-bg: #FFFFFF;
    --bs-table-color: #313131;
    --bs-table-border-color: #EAF6FA;
    --bs-table-striped-bg: #F5FAFE;
    --bs-table-hover-bg: rgba(0, 47, 63, 0.03);
    --bs-table-hover-color: #002F3F;
}
html.theme-light .table-dark {
    --bs-table-bg: #EAF6FA !important;
    --bs-table-color: #002F3F !important;
    --bs-table-border-color: #D0DDE5 !important;
}
html.theme-light .table thead th {
    color: #002F3F !important;
    border-bottom-color: #128040 !important;
    font-family: 'Poppins', sans-serif;
}

/* ---- Light: Forms ---- */
html.theme-light .form-control, html.theme-light .form-select {
    background: #FFFFFF;
    border-color: #D0DDE5;
    color: #313131;
    font-family: 'Poppins', sans-serif;
}
html.theme-light .form-control:focus, html.theme-light .form-select:focus {
    background: #FFFFFF;
    border-color: #128040;
    color: #313131;
    box-shadow: 0 0 0 0.15rem rgba(18, 128, 64, 0.2);
}
html.theme-light .form-control::placeholder {
    color: #ABB8C3;
}
html.theme-light .form-control:disabled {
    background: #F5FAFE;
    color: #ABB8C3;
}
html.theme-light .form-label {
    color: #002F3F;
    font-family: 'Poppins', sans-serif;
}
html.theme-light .form-text {
    color: #6C7A84;
}
html.theme-light .form-check-input:checked {
    background-color: #128040;
    border-color: #128040;
}
html.theme-light .form-check-input:focus {
    box-shadow: 0 0 0 0.15rem rgba(18, 128, 64, 0.2);
    border-color: #128040;
}

/* ---- Light: Buttons ---- */
html.theme-light .btn {
    font-family: 'Poppins', sans-serif;
    border-radius: 9999px;
}
html.theme-light .btn-primary {
    background: #002F3F;
    color: #FFFFFF;
    border-color: #002F3F;
    box-shadow: none;
}
html.theme-light .btn-primary:hover, html.theme-light .btn-primary:focus {
    background: #128040;
    border-color: #128040;
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(18, 128, 64, 0.25);
}
html.theme-light .btn-secondary {
    background: #EEEEEE;
    color: #313131;
    border-color: #D0DDE5;
}
html.theme-light .btn-secondary:hover {
    background: #D0DDE5;
    color: #002F3F;
}
html.theme-light .btn-orange {
    background: #F17922;
    color: #FFFFFF;
    border-color: #F17922;
    box-shadow: none;
}
html.theme-light .btn-orange:hover {
    background: #D96815;
    border-color: #D96815;
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(241, 121, 34, 0.25);
}
html.theme-light .btn-outline-secondary {
    color: #313131;
    border-color: #D0DDE5;
}
html.theme-light .btn-outline-secondary:hover {
    background: #EAF6FA;
    color: #002F3F;
}
html.theme-light .btn-outline-warning {
    color: #F17922;
    border-color: #F17922;
}
html.theme-light .btn-outline-danger {
    color: #DC3545;
    border-color: #DC3545;
}
html.theme-light .btn-outline-success {
    color: #128040;
    border-color: #128040;
}
html.theme-light .btn-outline-success:hover,
html.theme-light .btn-success:hover {
    background: #128040;
    color: #FFFFFF;
}

/* ---- Light: Badges ---- */
html.theme-light .badge.bg-success { background: #128040 !important; }
html.theme-light .badge.bg-danger { background: #DC3545 !important; }
html.theme-light .badge.bg-warning { background: #F17922 !important; color: #FFFFFF !important; }
html.theme-light .badge.bg-info { background: #002F3F !important; color: #FFFFFF !important; }

/* ---- Light: Alerts ---- */
html.theme-light .alert {
    background: #FFFFFF;
}
html.theme-light .alert-info {
    border-color: #002F3F;
    color: #002F3F;
}
html.theme-light .alert-success {
    border-color: #128040;
    color: #128040;
}

/* ---- Light: Footer ---- */
html.theme-light .footer {
    background: #EAF6FA;
    border-top-color: #D0DDE5 !important;
    color: #6C7A84;
}
html.theme-light .footer a {
    color: #002F3F;
}

/* ---- Light: Divider ---- */
html.theme-light .tron-divider {
    background: linear-gradient(90deg, transparent, #D0DDE5, #128040, #D0DDE5, transparent);
    box-shadow: none;
}

/* ---- Light: Stats ---- */
html.theme-light .tron-stat-value {
    color: #002F3F;
    text-shadow: none;
}
html.theme-light .tron-stat-label {
    color: #6C7A84;
}

/* ---- Light: Scrollbar ---- */
html.theme-light ::-webkit-scrollbar-track {
    background: #FFFFFF;
}
html.theme-light ::-webkit-scrollbar-thumb {
    background: #D0DDE5;
}
html.theme-light ::-webkit-scrollbar-thumb:hover {
    background: #ABB8C3;
}

/* ---- Light: Theme toggle ---- */
html.theme-light .tron-theme-toggle {
    border-color: #D0DDE5;
    color: #6C7A84;
}
html.theme-light .tron-theme-toggle:hover {
    border-color: #002F3F;
    color: #002F3F;
}

/* ---- Light: Bodygraph ---- */
html.theme-light .bg-center-shape {
    fill: #FFFFFF;
    stroke: #ABB8C3;
}
html.theme-light .bg-center:hover .bg-center-shape,
html.theme-light .bg-center.defined .bg-center-shape {
    stroke: #002F3F;
    filter: none;
}
html.theme-light .bg-center.defined .bg-center-shape {
    fill: rgba(0, 47, 63, 0.06);
}
html.theme-light .bg-center-label {
    fill: #6C7A84;
}
html.theme-light .bg-center.defined .bg-center-label {
    fill: #002F3F;
}
html.theme-light .bg-channel {
    stroke: #D0DDE5;
}
html.theme-light .bg-channel.defined {
    stroke: #002F3F;
    filter: none;
}
html.theme-light .bg-channel.orange {
    stroke: #F17922;
    filter: none;
}
html.theme-light .gate-toggle {
    border-color: #D0DDE5;
    background: #FFFFFF;
    color: #6C7A84;
}
html.theme-light .gate-toggle:hover {
    border-color: #002F3F;
    color: #002F3F;
}
html.theme-light .gate-toggle.active.personality {
    background: #002F3F;
    color: #FFFFFF;
    border-color: #002F3F;
    box-shadow: 0 2px 6px rgba(0, 47, 63, 0.2);
}
html.theme-light .gate-toggle.active.design {
    background: #F17922;
    color: #FFFFFF;
    border-color: #F17922;
    box-shadow: 0 2px 6px rgba(241, 121, 34, 0.2);
}
html.theme-light .gate-toggle.active.both {
    background: linear-gradient(135deg, #002F3F 50%, #F17922 50%);
    color: #FFFFFF;
    box-shadow: 0 2px 6px rgba(0, 47, 63, 0.2);
}
html.theme-light .legend-swatch.personality {
    background: #002F3F;
    box-shadow: none;
}
html.theme-light .legend-swatch.design {
    background: #F17922;
    box-shadow: none;
}

/* ---- Button Processing Indicator ---- */

.tula-processing {
    opacity: 0.7;
    cursor: not-allowed !important;
    pointer-events: none;
}

.tula-spinner {
    display: inline-block;
    width: 0.85em;
    height: 0.85em;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: tula-spin 0.6s linear infinite;
    vertical-align: -0.1em;
}

@keyframes tula-spin {
    to { transform: rotate(360deg); }
}