/**
 * BeambePrep UCAT Exam Hall Styling.
 * Enforces the Midnight Hive Design System:
 * - 98% Viewport Width Law.
 * - True dark backgrounds (#080B12 / #0A0D14).
 * - Raised surfaces (#121722) and subtle border contrast (#1E2638).
 * - Brand Honeycomb Amber (#FFC107 / #F59E0B).
 * - Split-pane independent scroll viewports.
 * - Draggable Precision Virtual Calculator HUD.
 * - 5-minute Yellow Alert Timer styling.
 */

:root {
    --ucat-bg-space: #080B12;
    --ucat-bg-surface: #0E131F;
    --ucat-bg-card: #121722;
    --ucat-bg-raised: #182030;
    --ucat-border: rgba(255, 255, 255, 0.08);
    --ucat-border-highlight: rgba(255, 193, 7, 0.3);
    --ucat-text-main: #F5F5F5;
    --ucat-text-muted: #94A3B8;
    --ucat-amber: #FFC107;
    --ucat-amber-glow: rgba(255, 193, 7, 0.25);
    --ucat-cyan: #00E5FF;
}

.text-muted {
    color: #94A3B8 !important;
}

.badge.bg-dark, .badge.bg-dark-subtle {
    background-color: #182030 !important;
    color: #CBD5E1 !important;
}

/* 98% Viewport Width Law */
body.ucat-exam-body {
    background-color: var(--ucat-bg-space) !important;
    color: var(--ucat-text-main) !important;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.ucat-hall-wrapper {
    width: 98% !important;
    max-width: 98% !important;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: 0 4px;
}

/* ── Top Header Toolbar ── */
.ucat-top-toolbar {
    background-color: var(--ucat-bg-surface);
    border-bottom: 1px solid var(--ucat-border);
    padding: 10px 16px;
    border-radius: 0 0 10px 10px;
    flex-shrink: 0;
}

.ucat-logo-badge {
    height: 34px;
    width: 34px;
    object-fit: contain;
    border-radius: 6px;
}

.ucat-timer-pill {
    background: #000000;
    border: 1px solid var(--ucat-border);
    border-radius: 20px;
    padding: 4px 14px;
    font-family: "Courier New", Courier, monospace;
    font-size: 1.15rem;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.timer-yellow-alert {
    background: var(--ucat-amber) !important;
    color: #000000 !important;
    font-weight: 800 !important;
    box-shadow: 0 0 15px var(--ucat-amber-glow);
    border-color: #FFA000 !important;
}

/* ── Central Split-Pane Canvas ── */
.ucat-central-canvas {
    flex: 1 1 auto;
    display: flex;
    gap: 12px;
    padding: 12px 0;
    overflow: hidden;
}

.split-stimulus-pane {
    width: 48%;
    background-color: var(--ucat-bg-card);
    border: 1px solid var(--ucat-border);
    border-radius: 10px;
    padding: 24px;
    overflow-y: auto;
    color: var(--ucat-text-main);
    line-height: 1.7;
    font-size: 0.98rem;
}

.split-question-pane {
    width: 52%;
    background-color: var(--ucat-bg-card);
    border: 1px solid var(--ucat-border);
    border-radius: 10px;
    padding: 24px;
    overflow-y: auto;
}

/* Stimulus Typography & Charts */
.ucat-passage p {
    margin-bottom: 1.25rem;
    text-align: justify;
}

.ucat-passage strong {
    color: #FFFFFF;
}

/* Custom Scrollbars */
.split-stimulus-pane::-webkit-scrollbar,
.split-question-pane::-webkit-scrollbar {
    width: 7px;
}
.split-stimulus-pane::-webkit-scrollbar-track,
.split-question-pane::-webkit-scrollbar-track {
    background: #080B12;
}
.split-stimulus-pane::-webkit-scrollbar-thumb,
.split-question-pane::-webkit-scrollbar-thumb {
    background: #1E2638;
    border-radius: 4px;
}
.split-stimulus-pane::-webkit-scrollbar-thumb:hover,
.split-question-pane::-webkit-scrollbar-thumb:hover {
    background: var(--ucat-amber);
}

/* ── Interactive Multiple Choice Options ── */
.option-row {
    background-color: var(--ucat-bg-surface);
    border: 1px solid var(--ucat-border);
    transition: all 0.2s ease;
    user-select: none;
}

.option-row:hover {
    background-color: var(--ucat-bg-raised);
    border-color: rgba(255, 193, 7, 0.4);
    transform: translateX(2px);
}

.option-row.selected-option {
    background-color: rgba(255, 193, 7, 0.12) !important;
    border-color: var(--ucat-amber) !important;
    box-shadow: 0 2px 10px var(--ucat-amber-glow);
}

.option-letter-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--ucat-border);
    font-family: monospace;
}

.selected-option .option-letter-badge {
    background: var(--ucat-amber);
    color: #000000 !important;
    border-color: var(--ucat-amber);
}

/* ── Bottom Action Dock ── */
.ucat-bottom-dock {
    background-color: var(--ucat-bg-surface);
    border-top: 1px solid var(--ucat-border);
    padding: 10px 16px;
    border-radius: 10px 10px 0 0;
    flex-shrink: 0;
}

/* ── Buttons & Ergonomics ── */
.btn-amber-active {
    background: var(--ucat-amber) !important;
    color: #000000 !important;
    font-weight: 700;
    border-color: #FFA000 !important;
}

.text-amber {
    color: var(--ucat-amber) !important;
}

.bg-amber-subtle {
    background-color: rgba(255, 193, 7, 0.15) !important;
}

.bg-amber {
    background-color: var(--ucat-amber) !important;
}

.pointer {
    cursor: pointer;
}

/* ── Precision Virtual Calculator Modal HUD ── */
.ucat-calc-modal {
    position: fixed;
    top: 90px;
    right: 30px;
    width: 290px;
    background: #0E131F;
    border: 1.5px solid var(--ucat-border-highlight);
    border-radius: 12px;
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.85);
    z-index: 10050;
    display: none;
    user-select: none;
}

.calc-header {
    background: #141A29;
    padding: 8px 12px;
    border-radius: 10px 10px 0 0;
    cursor: move;
    border-bottom: 1px solid var(--ucat-border);
}

.calc-screen {
    background: #070B12;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 8px 12px;
    margin: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 44px;
}

.calc-memory-indicator {
    color: var(--ucat-amber);
    font-family: monospace;
    font-weight: bold;
    font-size: 1rem;
    width: 20px;
}

.calc-display-digits {
    color: #00E5FF;
    font-family: "Courier New", Courier, monospace;
    font-size: 1.5rem;
    font-weight: 700;
    text-align: right;
    letter-spacing: 1px;
    flex-grow: 1;
    overflow: hidden;
}

.calc-body {
    padding: 0 10px 10px 10px;
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
}

.btn-calc {
    background: #182030;
    color: #F5F5F5;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    padding: 10px 0;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-calc:hover {
    background: #222C42;
    color: var(--ucat-amber);
    border-color: rgba(255, 193, 7, 0.4);
}

.btn-calc.calc-op {
    background: #1E283E;
    color: var(--ucat-amber);
}

.btn-calc.calc-mem {
    background: #151D2C;
    color: #69F0AE;
    font-size: 0.85rem;
}

.btn-calc.calc-clear {
    background: rgba(255, 82, 82, 0.15);
    color: #FF5252;
    border-color: rgba(255, 82, 82, 0.3);
}

.btn-calc.calc-equals {
    background: var(--ucat-amber);
    color: #000000;
    font-weight: 800;
}

/* ── Navigator Modal ── */
.navigator-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    z-index: 10040;
    display: none;
    align-items: center;
    justify-content: center;
}

.navigator-modal-backdrop.show {
    display: flex;
}

.navigator-dialog {
    background: #0E131F;
    border: 1px solid var(--ucat-border-highlight);
    border-radius: 14px;
    width: 580px;
    max-width: 95vw;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.9);
}

.navigator-body {
    overflow-y: auto;
    padding: 16px;
}

.navigator-row:hover {
    background: rgba(255, 193, 7, 0.08) !important;
}

/* ── Review Workstation ── */
.hover-glow:hover {
    border-color: var(--ucat-amber) !important;
    box-shadow: 0 4px 18px var(--ucat-amber-glow);
    transform: translateY(-2px);
    transition: all 0.2s ease;
}

/* ── Scroll Enforced Notification Banner ── */
.scroll-alert-banner {
    position: fixed;
    top: 65px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 193, 7, 0.95);
    color: #000000;
    padding: 10px 24px;
    border-radius: 30px;
    font-weight: 700;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6);
    z-index: 10060;
    animation: fadeInDown 0.3s ease;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translate(-50%, -15px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}