/* ============================================================
   Electricsim Research Theme
   A black, modern interface direction for scientific simulation.
   Loaded after the module stylesheets as a safe visual override.
   ============================================================ */

:root {
    --bg-color: #000000;
    --text-color: #f4f7fb;
    --muted-text: #8fa0b5;
    --panel-bg: rgba(7, 9, 13, 0.9);
    --panel-bg-strong: rgba(6, 8, 12, 0.96);
    --panel-border: rgba(255, 255, 255, 0.11);
    --panel-border-strong: rgba(255, 255, 255, 0.18);
    --glass-bg: var(--panel-bg);
    --glass-border: var(--panel-border);
    --secondary-bg: rgba(255, 255, 255, 0.055);
    --secondary-hover: rgba(255, 255, 255, 0.1);
    --accent: #8b9dff;
    --accent-hover: #b8c2ff;
    --accent-glow: rgba(139, 157, 255, 0.28);
    --research-cyan: #3dd9ff;
    --research-emerald: #37e0a1;
    --research-amber: #f6b944;
    --research-red: #ff5a52;
    --research-blue: #38a3ff;
    --grid-color: rgba(255, 255, 255, 0.045);
    --grid-major: rgba(255, 255, 255, 0.075);
    --shadow-deep: 0 18px 50px rgba(0, 0, 0, 0.55);
    --shadow-soft: 0 8px 28px rgba(0, 0, 0, 0.42);
}

* {
    /* Removed global letter-spacing override */
}

html,
body {
    background: #000000 !important;
}

.workspace {
    background: transparent !important;
}

body::before,
body::after {
    display: none !important;
    content: none !important;
}

#bgCanvas {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
}

#bgCanvas,
#simulationCanvas,
#capacitorCanvas,
canvas#simCanvas,
#gaussCanvas {
    filter: saturate(0.95) contrast(1.04);
}

/* Prevent browser scroll/bounce while dragging on touch devices */
#simulationCanvas,
#capacitorCanvas,
canvas#simCanvas,
#gaussCanvas {
    touch-action: none;
}

h1,
h2,
h3,
.card-title,
.page-title,
.panel-heading {
    color: var(--text-color);
}

p,
.card-desc,
.hub-subtitle,
.ctrl-group label,
.prop-group label,
.hud-label,
.sidebar-footer p {
    color: var(--muted-text) !important;
}

/* Shared research console panels */
.glass-panel,
.glass-panel-small,
.glass-modal,
.modal-content,
.side-panel,
.hud,
.hud-panel,
.shortcuts-panel,
.view-controls,
.toggle-panel,
.sidebar-left,
.sidebar-right {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.045), transparent 34%),
        linear-gradient(135deg, color-mix(in srgb, var(--accent, #3dd9ff) 7%, transparent), transparent 42%),
        var(--panel-bg) !important;
    border: 1px solid var(--panel-border) !important;
    border-top: 1px solid color-mix(in srgb, var(--accent, #3dd9ff) 52%, rgba(255, 255, 255, 0.12)) !important;
    border-radius: 8px !important;
    box-shadow: var(--shadow-deep), inset 0 1px 0 rgba(255, 255, 255, 0.055) !important;
    backdrop-filter: blur(18px) saturate(1.1) !important;
    -webkit-backdrop-filter: blur(18px) saturate(1.1) !important;
}

.top-nav,
.top-bar {
    background: rgba(4, 6, 12, 0.96) !important;
    border-top: 0 !important;
    border-left: 0 !important;
    border-right: 0 !important;
    border-radius: 0 !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
    box-shadow: 0 10px 36px rgba(0, 0, 0, 0.5) !important;
}

.hud h3,
.panel-heading,
.glass-panel h3,
.glass-panel-small h3 {
    color: #f4f7fb !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
    padding-bottom: 6px !important;
    margin-bottom: 12px !important;
    text-transform: uppercase;
    font-size: 0.72rem !important;
    font-weight: 700 !important;
    letter-spacing: 0.08em !important;
}

.reading,
.hud-row,
.slider-value,
.val-readout,
.stats,
.scale-readout,
#zoomLabel {
    color: #b9c6d8 !important;
    font-family: "SF Mono", "Cascadia Code", "Consolas", monospace !important;
    font-variant-numeric: tabular-nums;
}

.reading strong,
.hud-label {
    color: #f4f7fb !important;
    font-family: "Inter", sans-serif !important;
}

.hud-val,
.accent-val {
    color: #e2e8f0 !important;
    text-shadow: none !important;
}

.color-cyan, .hud-val.color-cyan { color: var(--research-cyan) !important; }
.color-green, .hud-val.color-green { color: var(--research-emerald) !important; }
.color-yellow, .hud-val.color-yellow { color: var(--research-amber) !important; }
.color-pink, .hud-val.color-pink { color: var(--research-amber) !important; }
.color-blue, .hud-val.color-blue { color: var(--research-blue) !important; }

/* Electrostatics simulator colors */
#hudE, #selForce { color: var(--research-amber) !important; }
#hudV, #selPotential { color: var(--research-emerald) !important; }
#selCharge { color: var(--research-amber) !important; }

/* Conductivity simulator colors */
#baseResVal, #currResVal, #resVal, #powerVal { color: var(--research-amber) !important; }
#currVal { color: var(--research-cyan) !important; }
#driftVal { color: var(--research-blue) !important; }

/* Capacitor simulator colors */
#hudC, #hudNetC, #selNetC { color: var(--research-cyan) !important; }
#hudQ, #hudNetQ, #selNetQ { color: var(--research-amber) !important; }
#hudU, #hudNetU, #selNetU { color: var(--research-blue) !important; }
#hudE { color: var(--research-emerald) !important; }
#selNetV { color: var(--research-emerald) !important; }

/* Buttons and controls */
button,
.btn-primary,
.btn-secondary,
.btn-danger,
.btn-submit,
.btn-icon,
.hub-btn,
.card-btn,
.reset-btn {
    border-radius: 6px !important;
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

/* === PRIMARY / SUBMIT BUTTONS === */
.btn-primary,
.btn-submit {
    background: #0284c7 !important;
    color: #ffffff !important;
    font-weight: 700 !important;
    border: 1px solid #0369a1 !important;
    box-shadow: 0 1.5px 3px rgba(0, 0, 0, 0.35) !important;
    text-shadow: none !important;
}

.btn-primary:hover,
.btn-submit:hover {
    background: #0369a1 !important;
    transform: translateY(-1px) !important;
    border-color: #0284c7 !important;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.45) !important;
}

.btn-primary:active,
.btn-submit:active {
    background: #075985 !important;
    transform: translateY(0px) scale(0.98) !important;
    box-shadow: inset 0 1.5px 3px rgba(0, 0, 0, 0.25) !important;
}

/* === SECONDARY / ICON / HUB BUTTONS === */
.btn-secondary,
.btn-icon,
.hub-btn,
.card-btn {
    background: rgba(255, 255, 255, 0.08) !important;
    color: #dce5ef !important;
    border: 1px solid rgba(255, 255, 255, 0.14) !important;
    box-shadow: 0 1.5px 3px rgba(0, 0, 0, 0.3) !important;
}

.hub-btn {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 0.35rem !important;
    padding: 0.35rem 0.8rem !important;
    font-size: 0.8rem !important;
    font-weight: 600 !important;
    text-decoration: none !important;
    font-family: 'Inter', sans-serif !important;
    height: 32px !important;
    border-radius: 6px !important;
}

.btn-secondary:hover,
.btn-icon:hover,
.hub-btn:hover,
.card-btn:hover {
    background: rgba(255, 255, 255, 0.15) !important;
    border-color: rgba(255, 255, 255, 0.25) !important;
    color: #ffffff !important;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.4) !important;
    transform: translateY(-1px) !important;
}

.btn-secondary:active,
.btn-icon:active,
.hub-btn:active,
.card-btn:active {
    transform: translateY(0px) scale(0.97) !important;
    background: rgba(255, 255, 255, 0.1) !important;
}

/* === DANGER / RESET BUTTONS === */
.btn-danger,
.reset-btn {
    background: rgba(239, 68, 68, 0.12) !important;
    color: #f87171 !important;
    border: 1px solid rgba(239, 68, 68, 0.3) !important;
    box-shadow: 0 1.5px 3px rgba(0, 0, 0, 0.3) !important;
}

.btn-danger:hover,
.reset-btn:hover {
    background: rgba(239, 68, 68, 0.25) !important;
    color: #ffffff !important;
    border-color: rgba(239, 68, 68, 0.5) !important;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.4) !important;
    transform: translateY(-1px) !important;
}

.btn-danger:active,
.reset-btn:active {
    transform: translateY(0px) scale(0.97) !important;
    background: rgba(239, 68, 68, 0.18) !important;
}

select,
.modern-select,
.scale-select,
input[type="number"] {
    background: rgba(2, 4, 7, 0.86) !important;
    border: 1px solid rgba(255, 255, 255, 0.14) !important;
    color: #f4f7fb !important;
    border-radius: 6px !important;
}

input[type="range"] {
    accent-color: var(--accent, var(--research-cyan)) !important;
}

input[type="range"]::-webkit-slider-runnable-track {
    background: rgba(255, 255, 255, 0.1) !important;
    border-radius: 4px !important;
    height: 4px !important;
}

input[type="range"]::-webkit-slider-thumb {
    background: var(--accent, var(--research-cyan)) !important;
    border: none !important;
    width: 12px !important;
    height: 12px !important;
    border-radius: 50% !important;
    cursor: pointer !important;
    box-shadow: 0 1.5px 3px rgba(0, 0, 0, 0.4) !important;
    transition: transform 0.1s ease !important;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2) !important;
}

.toggle-switch {
    background: rgba(255, 255, 255, 0.12) !important;
    border: 1px solid rgba(255, 255, 255, 0.14) !important;
    position: relative !important;
    width: 36px !important;
    height: 20px !important;
    border-radius: 10px !important;
    transition: background 0.25s ease !important;
    flex-shrink: 0 !important;
}

.toggle-switch::after {
    content: '' !important;
    position: absolute !important;
    top: 2px !important;
    left: 2px !important;
    width: 16px !important;
    height: 16px !important;
    border-radius: 50% !important;
    background: rgba(255, 255, 255, 0.4) !important;
    transition: all 0.25s ease !important;
}

.toggle-row input:checked + .toggle-switch {
    background: var(--accent, var(--research-cyan)) !important;
    box-shadow: 0 0 10px var(--accent-glow, var(--accent)) !important;
    border-color: var(--accent, var(--research-cyan)) !important;
}

.toggle-row input:checked + .toggle-switch::after {
    left: 18px !important;
    background: white !important;
}

kbd {
    background: rgba(255, 255, 255, 0.075) !important;
    border: 1px solid rgba(255, 255, 255, 0.16) !important;
    color: #f4f7fb !important;
    border-radius: 5px !important;
}

/* Hub page */

.hub-container {
    gap: 2rem !important;
    max-width: 1180px !important;
}

.hub-header {
    max-width: 760px;
}

.hub-title {
    font-size: clamp(2.5rem, 6vw, 4.8rem) !important;
    color: #f8fbff !important;
    background: none !important;
    -webkit-text-fill-color: currentColor !important;
    filter: none !important;
    text-shadow: none !important;
}

.hub-title::after {
    content: "";
    display: block;
    width: min(420px, 70vw);
    height: 1px;
    margin: 1rem auto 0;
    background: linear-gradient(90deg, transparent, rgba(61, 217, 255, 0.8), transparent);
}

.hub-subtitle {
    max-width: 640px;
    margin: 0 auto;
    color: #9aa8bb !important;
    font-size: clamp(0.95rem, 2vw, 1.12rem) !important;
}

.cards-wrapper {
    gap: 1rem !important;
}

.nav-card {
    align-items: flex-start !important;
    text-align: left !important;
    min-height: 250px;
    padding: 1.5rem !important;
    border-radius: 8px !important;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.045), transparent 34%),
        linear-gradient(135deg, rgba(61, 217, 255, 0.07), transparent 42%),
        rgba(7, 9, 13, 0.9) !important;
    border: 1px solid rgba(255, 255, 255, 0.11) !important;
    border-top: 1px solid color-mix(in srgb, var(--hover-color, #3dd9ff) 52%, rgba(255, 255, 255, 0.12)) !important;
    box-shadow: var(--shadow-deep), inset 0 1px 0 rgba(255, 255, 255, 0.055) !important;
    transform: none;
}

.nav-card::before {
    background:
        linear-gradient(90deg, color-mix(in srgb, var(--hover-color, #3dd9ff) 28%, transparent), transparent 58%),
        repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.035) 0, rgba(255, 255, 255, 0.035) 1px, transparent 1px, transparent 20px) !important;
    opacity: 0.34 !important;
}

.nav-card:hover,
.nav-card:active {
    transform: translateY(-4px) !important;
    border-color: color-mix(in srgb, var(--hover-color, #3dd9ff) 55%, rgba(255, 255, 255, 0.18)) !important;
    box-shadow: var(--shadow-deep) !important;
}

.nav-card:hover .card-icon,
.nav-card:active .card-icon {
    transform: none !important;
}

.card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    margin-bottom: 1.2rem !important;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid color-mix(in srgb, var(--hover-color, #3dd9ff) 35%, rgba(255, 255, 255, 0.15));
    color: #f8fbff;
    font-size: 1.45rem !important;
    filter: none !important;
}

.card-title {
    font-size: 1.26rem !important;
    margin-bottom: 0.8rem !important;
}

.card-desc {
    font-size: 0.93rem !important;
    line-height: 1.58 !important;
    margin-bottom: auto !important;
}

.card-btn {
    display: inline-flex;
    margin-top: 1.5rem;
    padding: 0.65rem 1.1rem !important;
    font-size: 0.84rem !important;
    font-weight: 600 !important;
    letter-spacing: 0.02em !important;
}

.nav-card:hover .card-btn,
.nav-card:active .card-btn {
    background: color-mix(in srgb, var(--hover-color, #3dd9ff) 18%, rgba(255, 255, 255, 0.08)) !important;
    color: #ffffff !important;
    border-color: color-mix(in srgb, var(--hover-color, #3dd9ff) 55%, rgba(255, 255, 255, 0.2)) !important;
    box-shadow: 0 1.5px 3px rgba(0, 0, 0, 0.35) !important;
    transform: translateY(-1px) !important;
}

.footer-text {
    color: rgba(244, 247, 251, 0.44) !important;
}

#card-electro { --hover-color: #8b9dff; }
#card-gauss { --hover-color: #37e0a1; }
#card-capacitor { --hover-color: #3dd9ff; }
#card-conductivity { --hover-color: #f6b944; }

/* Module accent tuning */
body:has(#capacitorCanvas) {
    --accent: #3dd9ff;
    --accent-hover: #9beeff;
    --accent-glow: rgba(61, 217, 255, 0.28);
}

body:has(#simCanvas) {
    --accent: #f6b944;
    --accent-hover: #ffd989;
    --accent-glow: rgba(246, 185, 68, 0.22);
}

body:has(#simulationCanvas) {
    --accent: #8b9dff;
    --accent-hover: #b8c2ff;
    --accent-glow: rgba(139, 157, 255, 0.28);
}

body:has(#gaussCanvas) {
    --accent: #37e0a1;
    --accent-hover: #6eefc4;
    --accent-glow: rgba(55, 224, 161, 0.22);
}

.status-badge {
    border-radius: 6px !important;
}

.status-badge.green {
    background: rgba(55, 224, 161, 0.12) !important;
    color: #a8f4d2 !important;
    border-color: rgba(55, 224, 161, 0.36) !important;
}

.status-badge.red {
    background: rgba(255, 90, 82, 0.12) !important;
    color: #ffb2ad !important;
    border-color: rgba(255, 90, 82, 0.34) !important;
}

.component-item,
.network-tree-list,
.formula-card {
    background: rgba(255, 255, 255, 0.045) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    border-radius: 8px !important;
}

.component-item:hover,
.component-item.selected {
    background: rgba(61, 217, 255, 0.11) !important;
    border-color: rgba(61, 217, 255, 0.34) !important;
}

.modal-backdrop,
.modal-overlay {
    background: rgba(0, 0, 0, 0.72) !important;
    backdrop-filter: blur(10px);
}

.welcome-content,
.cond-welcome-inner {
    padding: 1.2rem;
    border-radius: 8px;
    background: rgba(3, 4, 5, 0.36);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.001ms !important;
    }
}

@media (max-width: 768px) {
    .nav-card {
        min-height: 0;
        padding: 1.2rem !important;
    }

    .card-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem !important;
    }

    .top-nav,
    .top-bar {
        min-height: 52px;
    }

    /* Scale down page title so it doesn't push the hub button off-screen */
    .page-title {
        font-size: 0.78rem !important;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        flex: 1;
        min-width: 0;
    }

    /* Ensure top bar allows title to shrink */
    .top-bar {
        gap: 0.6rem !important;
        padding: 0 0.75rem !important;
    }

    /* Panel heading stays compact */
    .glass-panel h3,
    .glass-panel-small h3,
    .panel-heading {
        font-size: 0.68rem !important;
        margin-bottom: 8px !important;
        padding-bottom: 4px !important;
    }

    /* Make sliders and labels easier to use on touch */
    .ctrl-group label,
    .prop-group label {
        font-size: 0.75rem !important;
    }

    .slider-value {
        font-size: 0.78rem !important;
    }

    input[type="range"] {
        height: 6px !important;
    }

    input[type="range"]::-webkit-slider-thumb {
        width: 22px !important;
        height: 22px !important;
    }
}

/* ─── Extra-small phones (≤480px) ─────────────────────────── */
@media (max-width: 480px) {
    /* Title shrinks further */
    .page-title {
        font-size: 0.7rem !important;
    }

    /* Hub page title and subtitle */
    .hub-title {
        font-size: clamp(1.8rem, 8vw, 2.8rem) !important;
    }

    .hub-subtitle {
        font-size: 0.88rem !important;
    }

    /* Condense panels on tiny screens */
    .glass-panel-small,
    .side-panel,
    .hud-panel {
        padding: 0.65rem !important;
    }

    /* Hub cards go single-column (already handled, but reinforce) */
    .nav-card {
        padding: 1rem !important;
    }

    .card-title {
        font-size: 1rem !important;
    }

    .card-desc {
        font-size: 0.82rem !important;
    }

    .card-btn {
        font-size: 0.78rem !important;
        padding: 0.5rem 0.8rem !important;
    }
}

/* Custom Scrollbars globally */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}
::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.25);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.45);
}

/* Input, select and textarea cohesive style */
select,
.modern-select,
.scale-select,
input[type="number"],
input[type="text"] {
    background: rgba(5, 7, 10, 0.95) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    color: #f4f7fb !important;
    padding: 6px 10px !important;
    font-size: 0.82rem !important;
    font-family: inherit !important;
    border-radius: 4px !important;
    outline: none !important;
    transition: border-color 0.2s ease !important;
}

select:focus,
.modern-select:focus,
.scale-select:focus,
input[type="number"]:focus,
input[type="text"]:focus {
    border-color: var(--accent, var(--research-cyan)) !important;
}