:root {
    --bg-main: #0f141c;
    --bg-card: #18202c;
    --bg-card-hover: #1f2a3a;
    --bg-card-alt: #131b26;
    --border-color: #2b394e;
    --border-active: #f97316;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --color-brand: #f97316;      /* Moto Orange */
    --color-brand-hover: #ea580c;
    --color-brand-glow: rgba(249, 115, 22, 0.25);
    
    --color-success: #10b981;    /* Aprobado / Correcto */
    --color-success-bg: rgba(16, 185, 129, 0.12);
    --color-danger: #ef4444;     /* Suspenso / Fallo */
    --color-danger-bg: rgba(239, 68, 68, 0.12);
    --color-warning: #f59e0b;    /* Trampa / Alerta */
    --color-warning-bg: rgba(245, 158, 11, 0.12);
    --color-info: #38bdf8;
    --color-info-bg: rgba(56, 189, 248, 0.12);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.45);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* NAVBAR */
.navbar {
    background-color: rgba(24, 32, 44, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 500;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
    flex-shrink: 0;
}

.brand-icon {
    background: linear-gradient(135deg, var(--color-brand), #e11d48);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    box-shadow: 0 0 15px var(--color-brand-glow);
}

.brand-badge {
    background-color: var(--color-brand);
    color: #fff;
    font-size: 0.68rem;
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    font-weight: 800;
    vertical-align: middle;
    margin-left: 0.25rem;
}

.nav-links {
    display: flex;
    gap: 0.4rem;
    align-items: center;
}

.nav-item {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.88rem;
    padding: 0.42rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    white-space: nowrap;
}

.nav-item:hover, .nav-item.active {
    color: var(--text-primary);
    background-color: var(--bg-card-hover);
}

.nav-item.cta-btn {
    background-color: var(--color-brand);
    color: #fff;
    font-weight: 700;
}

.nav-item.cta-btn:hover {
    background-color: var(--color-brand-hover);
}

/* DESKTOP DROPDOWN */
.nav-dropdown {
    position: relative;
    display: inline-block;
}

.nav-dropdown-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.88rem;
    padding: 0.42rem 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    transition: all 0.2s ease;
    font-family: inherit;
    white-space: nowrap;
}

.nav-dropdown-btn:hover, .nav-dropdown:hover .nav-dropdown-btn {
    color: var(--text-primary);
    background-color: var(--bg-card-hover);
}

.dropdown-caret {
    font-size: 0.75rem;
    opacity: 0.7;
    transition: transform 0.2s ease;
}

.nav-dropdown:hover .dropdown-caret {
    transform: rotate(180deg);
}

.nav-dropdown-content {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 250px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 16px 36px rgba(0,0,0,0.7);
    padding: 0.5rem;
    z-index: 600;
}

.nav-dropdown:hover .nav-dropdown-content,
.nav-dropdown:focus-within .nav-dropdown-content {
    display: block;
    animation: fadeInDropdown 0.15s ease-out;
}

@keyframes fadeInDropdown {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

.nav-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.55rem 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all 0.15s ease;
}

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

.nav-dropdown-item span {
    font-size: 1.05rem;
    width: 22px;
    text-align: center;
}

/* USER PILL BUTTON */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.btn-user-pill {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    border-radius: 20px;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
    background: var(--bg-card-alt);
    color: var(--text-primary);
}

.btn-user-pill.is-auth {
    border-color: rgba(34, 197, 94, 0.4);
    background: rgba(34, 197, 94, 0.12);
}

.btn-user-pill.is-auth .user-pill-name {
    color: #4ade80;
    font-weight: 800;
}

.btn-user-pill.is-guest {
    border-color: rgba(255, 255, 255, 0.2);
    background: var(--bg-card-alt);
}

.btn-user-pill.is-guest .user-pill-name {
    color: var(--color-brand);
    font-weight: 700;
}

.user-pill-badge {
    background: rgba(255, 255, 255, 0.12);
    font-size: 0.65rem;
    padding: 1px 5px;
    border-radius: 4px;
    font-weight: 700;
    color: var(--text-secondary);
}

/* HAMBURGER TOGGLE BUTTON */
.mobile-toggle-btn {
    display: none;
    width: 38px;
    height: 38px;
    background: var(--bg-card-alt);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    transition: all 0.2s ease;
}

.mobile-toggle-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--color-brand);
}

.hamburger-bar {
    width: 20px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all 0.25s ease;
}

.mobile-toggle-btn.is-active .hamburger-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-toggle-btn.is-active .hamburger-bar:nth-child(2) {
    opacity: 0;
}

.mobile-toggle-btn.is-active .hamburger-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* MAIN CONTAINER */
.main-content {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* HERO SECTION */
.hero {
    background: linear-gradient(180deg, rgba(249, 115, 22, 0.08) 0%, rgba(24, 32, 44, 0) 100%), var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: "🏍️";
    position: absolute;
    right: 2rem;
    bottom: -1.5rem;
    font-size: 8rem;
    opacity: 0.12;
    pointer-events: none;
}

.hero-tag {
    display: inline-block;
    background-color: var(--color-warning-bg);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    margin-bottom: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 0.75rem;
}

.hero-title span {
    color: var(--color-brand);
}

.hero-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 720px;
}

/* STATS GRID */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-card);
}

.stat-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-card-alt);
    border: 1px solid var(--border-color);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.6rem;
    font-weight: 800;
    line-height: 1.1;
}

.stat-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* ACTION CARDS GRID */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.action-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.action-card:hover {
    transform: translateY(-3px);
    border-color: var(--color-brand);
    box-shadow: 0 10px 25px -5px rgba(249, 115, 22, 0.15);
}

.action-card.featured {
    border-color: var(--color-brand);
    background: linear-gradient(180deg, rgba(249, 115, 22, 0.06) 0%, rgba(24, 32, 44, 0) 100%), var(--bg-card);
}

.card-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 9999px;
    text-transform: uppercase;
}

.badge-danger {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-brand {
    background-color: var(--color-brand-glow);
    color: var(--color-brand);
    border: 1px solid rgba(249, 115, 22, 0.3);
}

.badge-info {
    background-color: var(--color-info-bg);
    color: var(--color-info);
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.card-header-icon {
    font-size: 1.8rem;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 700;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex: 1;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--color-brand);
    color: #fff;
    box-shadow: 0 4px 14px var(--color-brand-glow);
}

.btn-primary:hover {
    background-color: var(--color-brand-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--bg-card-alt);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--text-secondary);
}

.btn-danger {
    background-color: var(--color-danger);
    color: #fff;
}

.btn-danger:hover {
    background-color: #dc2626;
}

/* EXAM VIEW */
.exam-header {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.exam-timer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-brand);
    background-color: var(--bg-card-alt);
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.exam-timer.warning {
    color: var(--color-danger);
    border-color: var(--color-danger);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.6; }
    100% { opacity: 1; }
}

.exam-progress-tracker {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.q-dot {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-card-alt);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s ease;
}

.q-dot:hover {
    border-color: var(--color-brand);
    color: var(--text-primary);
}

.q-dot.active {
    border-color: var(--color-brand);
    background-color: rgba(249, 115, 22, 0.2);
    color: var(--color-brand);
}

.q-dot.answered {
    background-color: #2563eb;
    border-color: #3b82f6;
    color: #fff;
}

/* QUESTION CARD */
.question-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-card);
}

.question-meta {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.q-badge {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.question-text {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.option-item {
    background-color: var(--bg-card-alt);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    transition: all 0.2s ease;
    user-select: none;
}

.option-item:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--text-secondary);
}

.option-item.selected {
    background-color: rgba(249, 115, 22, 0.12);
    border-color: var(--color-brand);
}

.option-indicator {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.option-item.selected .option-indicator {
    border-color: var(--color-brand);
    background-color: var(--color-brand);
    color: #fff;
}

.option-item.correct {
    background-color: var(--color-success-bg) !important;
    border-color: var(--color-success) !important;
}

.option-item.correct .option-indicator {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: #fff;
}

.option-item.wrong {
    background-color: var(--color-danger-bg) !important;
    border-color: var(--color-danger) !important;
}

.option-item.wrong .option-indicator {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
    color: #fff;
}

/* EXPLANATIONS (TRAP & LEGAL) */
.explanation-box {
    margin-top: 1.5rem;
    padding: 1.25rem;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.trap-box {
    background-color: var(--color-warning-bg);
    border: 1px solid rgba(245, 158, 11, 0.4);
}

.trap-box-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-warning);
    font-weight: 800;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.legal-box {
    background-color: var(--color-info-bg);
    border: 1px solid rgba(56, 189, 248, 0.4);
}

.legal-box-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-info);
    font-weight: 800;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.explanation-body {
    color: var(--text-primary);
    font-size: 0.92rem;
    line-height: 1.55;
}

/* REVIEW RESULT BANNER */
.result-banner {
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    margin-bottom: 2rem;
    text-align: center;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.result-banner.apto {
    background: linear-gradient(180deg, rgba(16, 185, 129, 0.2) 0%, rgba(24, 32, 44, 0.9) 100%), var(--bg-card);
    border: 2px solid var(--color-success);
}

.result-banner.no-apto {
    background: linear-gradient(180deg, rgba(239, 68, 68, 0.2) 0%, rgba(24, 32, 44, 0.9) 100%), var(--bg-card);
    border: 2px solid var(--color-danger);
}

.result-verdict {
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.result-verdict.apto {
    color: var(--color-success);
}

.result-verdict.no-apto {
    color: var(--color-danger);
}

.result-summary {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.result-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* FOOTER */
.footer {
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-card-alt);
    padding: 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: auto;
}

/* ==========================================================
   MOBILE DRAWER & BOTTOM BAR
   ========================================================== */

.mobile-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 998;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.mobile-backdrop.open {
    opacity: 1;
    pointer-events: auto;
}

.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 88%;
    max-width: 380px;
    background: #141c28;
    border-left: 1px solid var(--border-color);
    z-index: 999;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    box-shadow: -14px 0 40px rgba(0, 0, 0, 0.85);
}

.mobile-drawer.open {
    transform: translateX(0);
}

.mobile-drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-card-alt);
}

.mobile-drawer-close {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    transition: all 0.15s ease;
}

.mobile-drawer-close:hover {
    color: var(--text-primary);
    background: var(--bg-card-hover);
}

.mobile-drawer-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem 1rem 3rem 1rem;
    -webkit-overflow-scrolling: touch;
}

.mobile-menu-group {
    margin-bottom: 1.4rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.mobile-group-title {
    font-size: 0.72rem;
    font-weight: 800;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.7px;
    margin-bottom: 0.65rem;
    padding-left: 0.5rem;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.75rem 0.85rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.15s ease;
    margin-bottom: 0.35rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid transparent;
}

.mobile-nav-link:hover, .mobile-nav-link:active {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.mobile-nav-link.active {
    background: rgba(249, 115, 22, 0.12);
    border-color: rgba(249, 115, 22, 0.3);
    color: var(--color-brand);
}

.mobile-nav-link.active .mobile-nav-title {
    color: var(--color-brand);
}

.mobile-nav-link.featured-rafaga {
    background: rgba(249, 115, 22, 0.08);
    border-color: rgba(249, 115, 22, 0.25);
}

.mobile-nav-link.featured-hardcore {
    background: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.25);
}

.mobile-nav-link.featured-exam {
    background: rgba(56, 189, 248, 0.08);
    border-color: rgba(56, 189, 248, 0.25);
}

.mobile-nav-icon {
    font-size: 1.35rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.mobile-nav-text {
    display: flex;
    flex-direction: column;
}

.mobile-nav-title {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-primary);
}

.mobile-nav-sub {
    font-size: 0.74rem;
    color: var(--text-muted);
    line-height: 1.3;
}

.mobile-user-card {
    background: var(--bg-card-alt);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.85rem 1rem;
}

/* MOBILE BOTTOM BAR */
.mobile-bottom-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: rgba(19, 27, 38, 0.96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-top: 1px solid var(--border-color);
    justify-content: space-around;
    align-items: center;
    z-index: 900;
    box-shadow: 0 -4px 18px rgba(0, 0, 0, 0.4);
}

.bottom-bar-item {
    flex: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.68rem;
    font-weight: 700;
    border: none;
    background: transparent;
    cursor: pointer;
    transition: all 0.15s ease;
}

.bottom-bar-item:hover, .bottom-bar-item.active {
    color: var(--color-brand);
}

.bottom-bar-item.highlight {
    color: #f87171;
}

.bottom-bar-item.highlight.active {
    color: #ef4444;
}

.bottom-bar-icon {
    font-size: 1.25rem;
    line-height: 1;
}

.bottom-bar-label {
    letter-spacing: 0.2px;
}

/* ==========================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================== */

@media (max-width: 1024px) {
    .nav-links.desktop-only {
        display: none !important;
    }
    .mobile-toggle-btn {
        display: flex;
    }
}

@media (max-width: 768px) {
    body {
        padding-bottom: 64px;
    }
    .mobile-bottom-bar {
        display: flex;
    }
    .nav-container {
        padding: 0.6rem 1rem;
    }
    .brand-link {
        font-size: 1.1rem;
    }
    .brand-icon {
        width: 32px;
        height: 32px;
        font-size: 1.1rem;
    }
    .main-content {
        padding: 1.25rem 0.85rem;
    }
    .hero {
        padding: 1.75rem 1rem;
    }
    .hero-title {
        font-size: 1.55rem;
        line-height: 1.25;
    }
    .hero-subtitle {
        font-size: 0.92rem;
    }
    .hero::after {
        display: none;
    }
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .exam-header {
        flex-direction: column;
        align-items: stretch;
        gap: 0.85rem;
        padding: 1rem;
    }
    .exam-timer {
        justify-content: center;
    }
    .result-verdict {
        font-size: 2rem;
    }
    .q-dot {
        width: 28px;
        height: 28px;
        font-size: 0.78rem;
    }
}