:root {
    --bg-primary: #f8fafc;
    --bg-surface: #ffffff;
    --bg-sidebar: #0f172a;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-sidebar: #e2e8f0;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-light: #eff6ff;
    --border-color: #e2e8f0;
    --success-color: #16a34a;
    --success-bg: #f0fdf4;
    --error-color: #dc2626;
    --error-bg: #fef2f2;
    --warning-color: #d97706;
    --warning-bg: #fffbeb;
    --radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.2s ease-in-out;
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-surface: #1e293b;
    --bg-sidebar: #020617;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --text-sidebar: #cbd5e1;
    --accent-color: #3b82f6;
    --accent-hover: #60a5fa;
    --accent-light: #1e3a8a;
    --border-color: #334155;
    --success-color: #22c55e;
    --success-bg: #052e16;
    --error-color: #ef4444;
    --error-bg: #450a0a;
    --warning-color: #f59e0b;
    --warning-bg: #451a03;
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color 0.3s, color 0.3s;
}

/* Layout */
.app-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    color: var(--text-sidebar);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    transition: transform 0.3s ease;
}

.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.container {
    padding: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

/* Sidebar Elements */
.brand {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.brand-icon {
    font-size: 1.8rem;
}

.brand-text h2 {
    font-size: 1.1rem;
    color: #fff;
}

.brand-text span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.nav-menu {
    padding: 1rem 0;
    flex: 1;
    overflow-y: auto;
}

.nav-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-sidebar);
    font-size: 0.95rem;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.nav-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: #fff;
}

.nav-btn.active {
    background-color: var(--accent-color);
    color: #fff;
    font-weight: 600;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

/* Top Header Bar */
.top-bar {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.btn-icon {
    background: transparent;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--text-primary);
    padding: 0.4rem;
    border-radius: var(--radius);
}

.btn-icon:hover {
    background-color: var(--accent-light);
}

#mobile-menu-toggle {
    display: none;
}

/* Section Switching */
.view-section {
    display: none;
}

.view-section.active {
    display: block;
}

/* UI Cards */
.card {
    background-color: var(--bg-surface);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

.hero-card {
    background: linear-gradient(135deg, #2563eb, #1e3a8a);
    color: #fff;
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 2rem;
}

.hero-card p {
    margin: 0.5rem 0 1.5rem 0;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

/* Buttons */
.btn {
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary { background-color: var(--accent-color); color: #fff; }
.btn-primary:hover { background-color: var(--accent-hover); }

.btn-secondary { background-color: var(--text-secondary); color: #fff; }
.btn-secondary:hover { opacity: 0.9; }

.btn-outline { background-color: transparent; border-color: var(--border-color); color: var(--text-primary); }
.btn-outline:hover { background-color: var(--border-color); }

.btn-danger { background-color: var(--error-color); color: #fff; }
.btn-danger:hover { opacity: 0.9; }

.btn-large { padding: 0.8rem 1.6rem; font-size: 1rem; }
.btn-small { padding: 0.3rem 0.6rem; font-size: 0.85rem; }
.width-full { width: 100%; }

/* Stats Display */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

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

.stat-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.icon-blue { background-color: #dbeafe; color: #1e40af; }
.icon-purple { background-color: #f3e8ff; color: #6b21a8; }
.icon-green { background-color: #dcfce7; color: #15803d; }
.icon-red { background-color: #fee2e2; color: #b91c1c; }
.icon-yellow { background-color: #fef3c7; color: #b45309; }
.icon-orange { background-color: #ffedd5; color: #c2410c; }

.stat-data { display: flex; flex-direction: column; }
.stat-value { font-size: 1.3rem; font-weight: bold; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); }

/* Accordion and Form Controls */
.bloques-accordion { margin-top: 1rem; }

.bloque-group {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.bloque-header {
    background-color: var(--bg-surface);
    padding: 0.8rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-weight: 600;
}

.temas-container {
    padding: 0.8rem 1rem;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-surface);
    color: var(--text-primary);
}

.questions-preset-buttons {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.questions-preset-buttons .btn.active {
    background-color: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

/* Test Execution Views */
.test-header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.scenario-card {
    background-color: var(--accent-light);
    border-left: 4px solid var(--accent-color);
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
}

.question-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.question-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.badge {
    padding: 0.25rem 0.6rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-bloque { background-color: #e0e7ff; color: #3730a3; }
.badge-tema { background-color: #f1f5f9; color: #475569; }
.badge-warning { background-color: var(--warning-bg); color: var(--warning-color); }
.badge-success { background-color: var(--success-bg); color: var(--success-color); }

.question-title {
    font-size: 1.15rem;
    margin-bottom: 1.5rem;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.option-btn {
    text-align: left;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-surface);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    gap: 0.75rem;
}

.option-btn:hover:not(:disabled) {
    border-color: var(--accent-color);
    background-color: var(--accent-light);
}

.option-btn.selected { border-color: var(--accent-color); background-color: var(--accent-light); }
.option-btn.correct { border-color: var(--success-color); background-color: var(--success-bg); color: var(--success-color); font-weight: 600; }
.option-btn.incorrect { border-color: var(--error-color); background-color: var(--error-bg); color: var(--error-color); }

.explanation-box {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: var(--radius);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
}

.explanation-status { font-weight: bold; margin-bottom: 0.5rem; }

.options-detail-list {
    margin-top: 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-size: 0.88rem;
}

.question-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 1.5rem;
}

/* Timer Display */
.timer-display {
    font-weight: bold;
    font-family: monospace;
    font-size: 1.1rem;
    background: var(--bg-surface);
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

/* Results Section */
.score-summary-card {
    text-align: center;
    padding: 2rem;
    background-color: var(--accent-light);
    border-radius: var(--radius);
    margin: 1.5rem 0;
}

.score-value {
    font-size: 3rem;
    font-weight: bold;
    color: var(--accent-color);
}

.score-breakdown {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
}

.dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.dot-green { background-color: var(--success-color); }
.dot-red { background-color: var(--error-color); }
.dot-gray { background-color: var(--text-muted); }

.results-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.result-block-card {
    background-color: var(--bg-primary);
    padding: 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.res-stat-row {
    display: flex;
    justify-content: space-between;
    margin-top: 0.4rem;
}

/* Data Tables */
.table-responsive { overflow-x: auto; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th, .data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table th { background-color: var(--bg-primary); }

/* Modals & Loading */
.loading-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.spinner-card {
    background: var(--bg-surface);
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    max-width: 400px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem auto;
}

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

/* Helper Utility Classes */
.hidden { display: none !important; }
.margin-top-small { margin-top: 0.5rem; }
.margin-top-medium { margin-top: 1rem; }
.margin-top-large { margin-top: 1.5rem; }
.text-green { color: var(--success-color); }
.text-red { color: var(--error-color); }
.text-muted { color: var(--text-muted); }
.font-bold { font-weight: bold; }
.divider { border: 0; border-top: 1px solid var(--border-color); margin: 1.5rem 0; }
.input-group { display: flex; gap: 0.5rem; }

/* Responsive Adjustments */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    #mobile-menu-toggle { display: block; }
    .results-grid-2 { grid-template-columns: 1fr; }
}

/* Contemporary study dashboard */
:root {
    color-scheme: light;
    --bg-primary: #f4f7fb;
    --bg-surface: #ffffff;
    --bg-sidebar: #101b32;
    --text-primary: #17233b;
    --text-secondary: #58657c;
    --text-muted: #8792a6;
    --text-sidebar: #c2cce0;
    --accent-color: #4f46e5;
    --accent-hover: #4338ca;
    --accent-light: #eef2ff;
    --border-color: #e5eaf2;
    --success-color: #138a62;
    --success-bg: #e9f8f1;
    --error-color: #d34555;
    --error-bg: #fff0f1;
    --warning-color: #b7791f;
    --warning-bg: #fff7e5;
    --radius: 16px;
    --shadow: 0 8px 28px rgba(26, 39, 69, 0.055);
    --transition: 180ms ease;
}

[data-theme="dark"] {
    color-scheme: dark;
    --bg-primary: #0c1220;
    --bg-surface: #151e30;
    --bg-sidebar: #090e19;
    --text-primary: #edf2fc;
    --text-secondary: #bac5d8;
    --text-muted: #8290a8;
    --text-sidebar: #c3cee1;
    --accent-color: #818cf8;
    --accent-hover: #a5b4fc;
    --accent-light: #242b4a;
    --border-color: #29354b;
    --success-color: #5bd0a0;
    --success-bg: #15372f;
    --error-color: #ff7c87;
    --error-bg: #40252d;
    --warning-color: #f3c66d;
    --warning-bg: #3c3422;
}

html {
    min-width: 320px;
    scroll-behavior: smooth;
}

body {
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

button,
input,
select {
    font: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 3px solid rgba(99, 102, 241, 0.38);
    outline-offset: 3px;
}

.app-layout {
    min-height: 100vh;
}

.sidebar {
    width: 272px;
    background:
        radial-gradient(ellipse at 10% 0%, rgba(79, 70, 229, 0.2), transparent 38%),
        var(--bg-sidebar);
    box-shadow: 12px 0 32px rgba(12, 20, 39, 0.08);
}

.brand {
    min-height: 94px;
    padding: 1.35rem 1.5rem;
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

.brand-icon {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 14px;
    background: linear-gradient(145deg, #6d67f2, #4f46e5);
    box-shadow: 0 8px 20px rgba(79, 70, 229, 0.28);
    font-size: 1.35rem;
}

.brand-text h2 {
    font-size: 1.02rem;
    letter-spacing: -0.02em;
}

.brand-text span {
    color: #8997b2;
    font-size: 0.76rem;
}

.nav-menu {
    padding: 1.1rem 0.85rem;
}

.nav-btn {
    position: relative;
    min-height: 46px;
    margin: 0.2rem 0;
    padding: 0.7rem 0.85rem;
    border-radius: 11px;
    color: #aebbd0;
    font-size: 0.89rem;
    font-weight: 540;
}

.nav-btn .icon {
    width: 25px;
    text-align: center;
    filter: saturate(0.8);
    font-size: 1rem;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.07);
    color: #fff;
}

.nav-btn.active {
    background: linear-gradient(100deg, rgba(99, 102, 241, 0.28), rgba(99, 102, 241, 0.12));
    color: #fff;
    box-shadow: inset 3px 0 #9a96ff;
}

.sidebar-footer {
    padding: 1.1rem;
    border-top-color: rgba(255, 255, 255, 0.08);
}

.sidebar-footer .badge {
    display: inline-flex;
    padding: 0.4rem 0.75rem;
    border: 1px solid rgba(119, 224, 181, 0.16);
    background: rgba(19, 138, 98, 0.14);
    color: #8ee0ba;
}

.main-content {
    margin-left: 272px;
}

.top-bar {
    position: sticky;
    top: 0;
    z-index: 50;
    min-height: 76px;
    padding: 0.85rem clamp(1.25rem, 4vw, 3.5rem);
    border-bottom-color: rgba(229, 234, 242, 0.8);
    background: color-mix(in srgb, var(--bg-surface) 90%, transparent);
    backdrop-filter: blur(16px);
}

.top-bar h1 {
    margin-right: auto;
    margin-left: 0.75rem;
    font-size: 1.08rem;
    font-weight: 650;
    letter-spacing: -0.025em;
}

.btn-icon {
    width: 42px;
    height: 42px;
    display: inline-grid;
    place-items: center;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-surface);
    transition: var(--transition);
}

.btn-icon:hover {
    border-color: var(--accent-color);
    background: var(--accent-light);
    transform: translateY(-1px);
}

#mobile-menu-toggle {
    display: none;
}

.container {
    width: min(100%, 1280px);
    max-width: 1280px;
    padding: clamp(1.25rem, 3.6vw, 3rem);
}

.view-section > .card:first-child {
    margin-top: 0.15rem;
}

h1,
h2,
h3,
h4 {
    color: var(--text-primary);
    line-height: 1.25;
    letter-spacing: -0.025em;
}

h2 {
    font-size: clamp(1.35rem, 2vw, 1.7rem);
}

h3 {
    font-size: 1.08rem;
}

p,
li {
    color: var(--text-secondary);
}

a {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

a:hover {
    color: var(--accent-hover);
}

.hero-card {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    min-height: 250px;
    display: flex;
    align-items: center;
    padding: clamp(2rem, 5vw, 3.5rem);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 24px;
    background:
        radial-gradient(ellipse at 82% 18%, rgba(168, 164, 255, 0.46), transparent 27%),
        radial-gradient(ellipse at 92% 120%, rgba(39, 211, 175, 0.22), transparent 40%),
        linear-gradient(120deg, #252568 0%, #4f46e5 55%, #635cf0 100%);
    box-shadow: 0 22px 48px rgba(67, 56, 202, 0.19);
}

.hero-card::after {
    position: absolute;
    z-index: -1;
    right: 7%;
    bottom: -155px;
    width: 330px;
    height: 330px;
    border: 1px solid rgba(255, 255, 255, 0.17);
    border-radius: 50%;
    box-shadow: 0 0 0 32px rgba(255, 255, 255, 0.035), 0 0 0 72px rgba(255, 255, 255, 0.025);
    content: "";
}

.hero-text {
    max-width: 650px;
}

.hero-card h2 {
    color: #fff;
    font-size: clamp(1.75rem, 3.5vw, 2.7rem);
    letter-spacing: -0.045em;
}

.hero-card p {
    max-width: 570px;
    margin: 0.8rem 0 1.7rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 1rem;
}

.hero-actions {
    flex-wrap: wrap;
    gap: 0.75rem;
}

.hero-card .btn-primary {
    border-color: #fff;
    background: #fff;
    color: #3934a2;
}

.hero-card .btn-primary:hover {
    background: #f0efff;
    color: #292575;
}

.hero-card .btn-secondary {
    border-color: rgba(255, 255, 255, 0.32);
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    backdrop-filter: blur(8px);
}

.hero-card .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.18);
}

.section-title {
    margin: 2rem 0 0.65rem;
}

.section-title h3 {
    font-size: 1.16rem;
}

.stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 185px), 1fr));
    gap: 0.9rem;
    margin: 1rem 0 1.5rem;
}

.stat-card {
    min-height: 98px;
    padding: 1.1rem;
    border-radius: 16px;
    background: var(--bg-surface);
    box-shadow: 0 5px 20px rgba(26, 39, 69, 0.035);
    transition: var(--transition);
}

.stat-card:hover {
    border-color: color-mix(in srgb, var(--accent-color) 30%, var(--border-color));
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.stat-icon {
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    border-radius: 14px;
    font-size: 1.05rem;
}

.icon-blue { background: #e9efff; color: #4858ca; }
.icon-purple { background: #f1eaff; color: #8054c8; }
.icon-green { background: #e6f7ef; color: #16845b; }
.icon-red { background: #fff0f1; color: #c94d5a; }
.icon-yellow { background: #fff5dc; color: #aa7415; }
.icon-orange { background: #fff0e4; color: #c26b2b; }

[data-theme="dark"] .icon-blue,
[data-theme="dark"] .icon-purple,
[data-theme="dark"] .icon-green,
[data-theme="dark"] .icon-red,
[data-theme="dark"] .icon-yellow,
[data-theme="dark"] .icon-orange {
    background: color-mix(in srgb, currentColor 15%, var(--bg-surface));
}

.stat-value {
    font-size: 1.42rem;
    font-weight: 720;
    letter-spacing: -0.04em;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.77rem;
    font-weight: 520;
}

.card {
    padding: clamp(1.25rem, 3vw, 2rem);
    border-color: var(--border-color);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.card > h2 + .subtitle {
    margin-top: 0.55rem;
}

.subtitle {
    margin-bottom: 1.25rem;
    color: var(--text-muted);
    font-size: 0.92rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group > label,
.form-group > label:not(.checkbox-label) {
    display: inline-block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 0.88rem;
    font-weight: 650;
}

.selector-controls {
    padding: 0.9rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    background: var(--bg-primary);
}

input[type="checkbox"],
input[type="radio"] {
    width: 17px;
    height: 17px;
    flex: 0 0 17px;
    accent-color: var(--accent-color);
}

.bloques-accordion {
    display: grid;
    gap: 0.8rem;
}

.bloque-group {
    border-color: var(--border-color);
    border-radius: 15px;
    background: var(--bg-surface);
    box-shadow: 0 3px 12px rgba(26, 39, 69, 0.025);
}

.bloque-header {
    min-height: 60px;
    padding: 0.85rem 1rem;
    background: var(--bg-surface);
    transition: background var(--transition);
}

.bloque-header:hover {
    background: var(--bg-primary);
}

.bloque-header .checkbox-label {
    align-items: center;
    color: var(--text-primary);
}

.bloque-header strong {
    color: var(--accent-color);
}

.toggle-icon {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.temas-container {
    padding: 0.9rem;
    border-top-color: var(--border-color);
    background: var(--bg-primary);
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 330px), 1fr));
    gap: 0.65rem;
}

.temas-container .checkbox-label {
    min-height: 56px;
    padding: 0.8rem;
    border: 1px solid transparent;
    border-radius: 11px;
    background: var(--bg-surface);
    color: var(--text-secondary);
    line-height: 1.45;
    transition: var(--transition);
}

.temas-container .checkbox-label:hover {
    border-color: color-mix(in srgb, var(--accent-color) 28%, var(--border-color));
    transform: translateY(-1px);
}

.temas-container .checkbox-label:has(input:checked) {
    border-color: color-mix(in srgb, var(--accent-color) 42%, var(--border-color));
    background: var(--accent-light);
    color: var(--text-primary);
}

.form-control {
    min-height: 45px;
    padding: 0.65rem 0.8rem;
    border-radius: 11px;
    box-shadow: 0 1px 2px rgba(26, 39, 69, 0.025);
}

.form-control:focus {
    border-color: var(--accent-color);
    outline: 3px solid color-mix(in srgb, var(--accent-color) 17%, transparent);
}

.btn {
    min-height: 42px;
    padding: 0.65rem 1rem;
    border-radius: 11px;
    font-size: 0.88rem;
    font-weight: 650;
    transition: var(--transition);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 5px 14px rgba(26, 39, 69, 0.1);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), #6863eb);
}

.btn-secondary {
    background: #273650;
}

.btn-outline {
    border-color: var(--border-color);
}

.btn-danger {
    background: #d74c5c;
}

.btn-large {
    min-height: 50px;
    padding: 0.8rem 1.35rem;
}

.questions-preset-buttons {
    flex-wrap: wrap;
    gap: 0.5rem;
}

.questions-preset-buttons .btn {
    min-width: 48px;
}

.simulacro-info-box,
.stats-summary-box,
.info-box-highlight,
.alert,
.notice-card {
    padding: 1rem 1.15rem;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    background: var(--bg-primary);
}

.simulacro-info-box {
    margin: 1.25rem 0;
}

.simulacro-info-box h4,
.info-box-highlight h4 {
    margin-bottom: 0.55rem;
}

.simulacro-info-box ul,
.info-details-body ul {
    padding-left: 1.25rem;
}

.simulacro-info-box li,
.info-details-body li {
    margin: 0.28rem 0;
}

.radio-group {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.8rem;
}

.radio-card {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    background: var(--bg-surface);
    cursor: pointer;
    transition: var(--transition);
}

.radio-card:has(input:checked) {
    border-color: var(--accent-color);
    background: var(--accent-light);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-color) 12%, transparent);
}

.radio-content {
    display: grid;
    gap: 0.3rem;
}

.radio-content strong {
    color: var(--text-primary);
    font-size: 0.9rem;
}

.radio-content span {
    color: var(--text-muted);
    font-size: 0.82rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.collapsible-section {
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 15px;
    background: var(--bg-primary);
}

.collapsible-section h3 {
    margin-bottom: 1rem;
}

.test-header-bar {
    min-height: 56px;
    gap: 1rem;
}

.test-progress-info {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.7rem;
    color: var(--text-secondary);
    font-weight: 650;
}

.progress-bar-container {
    height: 9px;
    border-radius: 20px;
}

.progress-bar-fill {
    border-radius: inherit;
    background: linear-gradient(90deg, #4f46e5, #20b991);
}

.scenario-card {
    padding: 1.2rem 1.35rem;
    border: 1px solid color-mix(in srgb, var(--accent-color) 22%, var(--border-color));
    border-left: 4px solid var(--accent-color);
    border-radius: 15px;
}

.question-card {
    padding: clamp(1.2rem, 3vw, 2.25rem);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.question-title {
    margin-bottom: 1.5rem;
    font-size: clamp(1.15rem, 2vw, 1.4rem);
    line-height: 1.55;
}

.badge {
    padding: 0.32rem 0.7rem;
    border: 1px solid transparent;
    border-radius: 999px;
    letter-spacing: 0.01em;
}

.badge-bloque {
    border-color: #e0e4ff;
    background: #eef0ff;
    color: #4944bb;
}

.badge-tema {
    border-color: var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
}

.option-btn {
    align-items: center;
    min-height: 58px;
    padding: 0.85rem 1rem;
    border-radius: 13px;
    line-height: 1.5;
}

.option-btn > strong {
    width: 29px;
    height: 29px;
    flex: 0 0 29px;
    display: grid;
    place-items: center;
    border-radius: 9px;
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.option-btn:hover:not(:disabled) {
    transform: translateX(2px);
}

.option-btn.selected > strong {
    background: var(--accent-color);
    color: #fff;
}

.option-btn.correct > strong,
.option-btn.incorrect > strong {
    background: currentColor;
    color: var(--bg-surface);
}

.explanation-box {
    padding: 1.2rem;
    border-radius: 14px;
}

.explanation-status {
    font-size: 0.94rem;
}

.options-detail-list p {
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border-color);
}

.options-detail-list p:last-child {
    border-bottom: 0;
}

.question-actions,
.results-actions,
.filter-bar,
.flex-header {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.question-actions {
    justify-content: space-between;
}

.timer-display {
    border-radius: 11px;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.score-summary-card {
    padding: 2.25rem 1.5rem;
    border: 1px solid color-mix(in srgb, var(--accent-color) 20%, var(--border-color));
    border-radius: 20px;
}

.score-main {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.score-label,
.score-max {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.score-value {
    line-height: 1.15;
    letter-spacing: -0.06em;
}

.score-breakdown {
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    color: var(--text-secondary);
}

.result-block-card {
    padding: 1.15rem;
    border-radius: 14px;
}

.result-block-card h3 {
    margin-bottom: 0.85rem;
}

.filter-bar {
    margin: 1.25rem 0;
}

.filter-bar .form-control {
    flex: 1 1 220px;
}

.filter-bar .btn {
    flex: 0 0 auto;
}

.data-table {
    border-spacing: 0;
    font-size: 0.88rem;
}

.data-table th {
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.data-table th:first-child {
    border-radius: 10px 0 0 10px;
}

.data-table th:last-child {
    border-radius: 0 10px 10px 0;
}

.data-table td {
    color: var(--text-secondary);
}

.data-table tbody tr:hover {
    background: var(--bg-primary);
}

.data-table .btn-small {
    min-height: 34px;
}

.info-details-body > h3 {
    margin: 1.5rem 0 0.65rem;
}

.info-details-body > h3:first-child {
    margin-top: 0;
}

.info-box-highlight {
    border-left: 3px solid var(--accent-color);
}

.alert-info {
    border-color: color-mix(in srgb, var(--accent-color) 20%, var(--border-color));
    background: var(--accent-light);
}

.alert-warning {
    border-color: color-mix(in srgb, var(--warning-color) 28%, var(--border-color));
    background: var(--warning-bg);
}

.config-section {
    padding: 1.15rem 0;
}

.config-section h3 {
    margin-bottom: 0.65rem;
}

.input-group .form-control {
    min-width: 0;
}

.chart-bars-container,
.weak-topics-grid {
    margin-top: 0.8rem;
}

.loading-overlay {
    background: rgba(12, 18, 32, 0.62);
    backdrop-filter: blur(7px);
}

.spinner-card {
    width: min(100% - 2rem, 420px);
    padding: 2.2rem;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.2);
}

.spinner {
    width: 46px;
    height: 46px;
    border-width: 4px;
}

.notice-card {
    margin-top: 1rem;
    border-color: color-mix(in srgb, var(--accent-color) 20%, var(--border-color));
    background: var(--accent-light);
}

.divider {
    border-top-color: var(--border-color);
}

@media (max-width: 1050px) {
    .sidebar {
        width: 245px;
    }

    .main-content {
        margin-left: 245px;
    }

    .container {
        padding: 1.5rem;
    }

    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: min(290px, 86vw);
        transform: translateX(-105%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    #mobile-menu-toggle {
        display: inline-grid;
    }

    .top-bar {
        min-height: 66px;
        padding: 0.65rem 1rem;
    }

    .top-bar h1 {
        font-size: 1rem;
    }

    .container {
        padding: 1.1rem;
    }

    .hero-card {
        min-height: 0;
        padding: 1.65rem;
        border-radius: 19px;
    }

    .hero-card::after {
        right: -180px;
        opacity: 0.55;
    }

    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.65rem;
    }

    .stat-card {
        min-height: 84px;
        gap: 0.7rem;
        padding: 0.75rem;
    }

    .stat-icon {
        width: 36px;
        height: 36px;
        flex-basis: 36px;
        border-radius: 11px;
        font-size: 0.92rem;
    }

    .stat-value {
        font-size: 1.2rem;
    }

    .stat-label {
        font-size: 0.68rem;
    }

    .radio-group,
    .grid-2 {
        grid-template-columns: 1fr;
    }

    .results-grid-2 {
        grid-template-columns: 1fr;
    }

    .question-actions {
        justify-content: flex-start;
    }

    .question-actions .btn {
        flex: 1 1 auto;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0.8rem;
    }

    .hero-card {
        padding: 1.35rem;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .card {
        padding: 1rem;
        border-radius: 16px;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .stats-grid .stat-card {
        align-items: flex-start;
    }

    .temas-container {
        grid-template-columns: 1fr;
        padding: 0.65rem;
    }

    .test-header-bar {
        align-items: flex-start;
    }

    .score-breakdown {
        flex-direction: column;
        align-items: flex-start;
        width: fit-content;
        margin: 1rem auto 0;
    }

    .results-actions .btn,
    .filter-bar .btn {
        width: 100%;
    }

    .data-table th,
    .data-table td {
        padding: 0.65rem 0.55rem;
        white-space: nowrap;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Apple-inspired editorial layout */
:root {
    color-scheme: light;
    --bg-primary: #f5f5f7;
    --bg-surface: #ffffff;
    --bg-sidebar: rgba(255, 255, 255, 0.88);
    --text-primary: #1d1d1f;
    --text-secondary: #515154;
    --text-muted: #86868b;
    --text-sidebar: #424245;
    --accent-color: #0071e3;
    --accent-hover: #0077ed;
    --accent-light: #e8f2fc;
    --border-color: #e5e5e7;
    --success-color: #248a3d;
    --success-bg: #eaf6ec;
    --error-color: #d70015;
    --error-bg: #fff0f0;
    --warning-color: #9a6700;
    --warning-bg: #fff5dc;
    --radius: 18px;
    --shadow: 0 12px 36px rgba(0, 0, 0, 0.045);
    --transition: 200ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

[data-theme="dark"] {
    color-scheme: dark;
    --bg-primary: #000000;
    --bg-surface: #1c1c1e;
    --bg-sidebar: rgba(28, 28, 30, 0.9);
    --text-primary: #f5f5f7;
    --text-secondary: #d1d1d6;
    --text-muted: #98989d;
    --text-sidebar: #d1d1d6;
    --accent-color: #2997ff;
    --accent-hover: #64b5ff;
    --accent-light: #13263a;
    --border-color: #38383a;
    --success-color: #30d158;
    --success-bg: #173321;
    --error-color: #ff453a;
    --error-bg: #3b1d1d;
    --warning-color: #ffd60a;
    --warning-bg: #3b3315;
    --shadow: 0 12px 36px rgba(0, 0, 0, 0.2);
}

html {
    scroll-padding-top: 150px;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    letter-spacing: -0.01em;
}

.app-layout {
    display: block;
    min-height: 100vh;
}

.sidebar {
    position: sticky;
    inset: 0 0 auto;
    z-index: 100;
    width: 100%;
    height: 64px;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    overflow: visible;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    background: var(--bg-sidebar);
    box-shadow: none;
    color: var(--text-sidebar);
    backdrop-filter: saturate(180%) blur(22px);
    -webkit-backdrop-filter: saturate(180%) blur(22px);
}

.brand {
    width: auto;
    min-height: 0;
    padding: 0 1.5rem;
    flex: 0 0 auto;
    gap: 0.65rem;
    border: 0;
}

.brand-icon {
    width: 32px;
    height: 32px;
    border: 0;
    border-radius: 9px;
    background: #1d1d1f;
    box-shadow: none;
    color: #fff;
    font-size: 1rem;
}

[data-theme="dark"] .brand-icon {
    background: #f5f5f7;
    color: #1d1d1f;
}

.brand-text h2 {
    color: var(--text-primary);
    font-size: 0.87rem;
    font-weight: 650;
    letter-spacing: -0.02em;
}

.brand-text span {
    color: var(--text-muted);
    font-size: 0.68rem;
}

.nav-menu {
    min-width: 0;
    padding: 0 0.5rem;
    flex: 0 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.15rem;
    overflow-x: auto;
    scrollbar-width: none;
}

.nav-menu::-webkit-scrollbar {
    display: none;
}

.nav-btn {
    width: auto;
    min-height: 36px;
    margin: 0;
    padding: 0.45rem 0.65rem;
    flex: 0 0 auto;
    justify-content: center;
    gap: 0.4rem;
    border-radius: 9px;
    color: var(--text-secondary);
    font-size: 0.76rem;
    font-weight: 500;
    white-space: nowrap;
}

.nav-btn .icon {
    width: auto;
    font-size: 0.85rem;
    filter: grayscale(0.55);
}

.nav-btn:hover {
    background: rgba(120, 120, 128, 0.1);
    color: var(--text-primary);
}

.nav-btn.active {
    background: rgba(120, 120, 128, 0.13);
    box-shadow: none;
    color: var(--text-primary);
    font-weight: 650;
}

.sidebar-footer {
    width: auto;
    padding: 0 1.25rem;
    flex: 0 0 auto;
    border: 0;
}

.sidebar-footer .badge {
    padding: 0.3rem 0.55rem;
    border: 0;
    background: rgba(36, 138, 61, 0.1);
    color: var(--success-color);
    font-size: 0.65rem;
}

.main-content {
    min-height: calc(100vh - 64px);
    margin: 0;
}

.top-bar {
    position: relative;
    min-height: 72px;
    justify-content: flex-end;
    padding: 0.8rem max(2rem, calc((100vw - 1040px) / 2));
    border: 0;
    background: transparent;
    backdrop-filter: none;
}

.top-bar h1 {
    margin: 0 auto 0 0;
    color: var(--text-muted);
    font-size: 0.83rem;
    font-weight: 500;
    letter-spacing: 0;
}

.btn-icon {
    width: 36px;
    height: 36px;
    border: 0;
    border-radius: 50%;
    background: rgba(120, 120, 128, 0.1);
    font-size: 1rem;
}

.btn-icon:hover {
    border: 0;
    background: rgba(120, 120, 128, 0.18);
    box-shadow: none;
    transform: none;
}

#mobile-menu-toggle {
    display: none;
}

.container {
    width: min(100%, 1120px);
    max-width: 1120px;
    padding: 0 2rem 4rem;
}

.hero-card {
    min-height: 360px;
    align-items: flex-end;
    padding: clamp(2rem, 6vw, 4.5rem);
    border: 0;
    border-radius: 30px;
    background:
        radial-gradient(ellipse at 78% 30%, rgba(45, 134, 255, 0.5), transparent 27%),
        radial-gradient(ellipse at 90% 100%, rgba(73, 174, 232, 0.38), transparent 36%),
        linear-gradient(135deg, #131820 5%, #172536 60%, #1b334a 100%);
    box-shadow: none;
}

.hero-card::after {
    right: 7%;
    bottom: -115px;
    width: min(38vw, 380px);
    height: min(38vw, 380px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow:
        0 0 0 30px rgba(255, 255, 255, 0.035),
        0 0 0 70px rgba(255, 255, 255, 0.025);
}

.hero-card h2 {
    max-width: 560px;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 650;
    letter-spacing: -0.065em;
    line-height: 1.02;
}

.hero-card p {
    max-width: 510px;
    margin: 1.15rem 0 1.7rem;
    color: rgba(255, 255, 255, 0.72);
    font-size: clamp(1rem, 1.5vw, 1.18rem);
    letter-spacing: -0.015em;
    line-height: 1.55;
}

.hero-actions {
    gap: 0.65rem;
}

.btn {
    min-height: 40px;
    padding: 0.6rem 1rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.btn:hover {
    box-shadow: none;
    transform: scale(1.025);
}

.btn-primary {
    background: var(--accent-color);
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    background: #424245;
}

.btn-outline {
    border-color: rgba(120, 120, 128, 0.24);
}

.hero-card .btn-primary {
    border-color: #fff;
    background: #fff;
    color: #1d1d1f;
}

.hero-card .btn-primary:hover {
    background: #e6e6e6;
    color: #1d1d1f;
}

.hero-card .btn-secondary {
    border-color: rgba(255, 255, 255, 0.48);
    background: transparent;
    color: #fff;
}

.hero-card .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
}

.syllabus-update-banner {
    display: flex;
    align-items: flex-start;
    gap: 0.9rem;
    margin: 1rem 0 0.5rem;
    padding: 1rem 1.15rem;
    border: 1px solid rgba(0, 113, 227, 0.11);
    border-radius: 16px;
    background: color-mix(in srgb, var(--accent-light) 72%, var(--bg-surface));
}

.syllabus-update-icon {
    width: 27px;
    height: 27px;
    flex: 0 0 27px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--accent-color);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 700;
}

.syllabus-update-banner strong {
    display: block;
    margin-bottom: 0.15rem;
    color: var(--text-primary);
    font-size: 0.87rem;
    font-weight: 650;
}

.syllabus-update-banner p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.5;
}

.syllabus-update-banner a {
    white-space: nowrap;
}

.section-title {
    margin: 3.1rem 0 0.9rem;
}

.section-title h3 {
    font-size: 1.65rem;
    font-weight: 650;
    letter-spacing: -0.045em;
}

.stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
}

.stat-card {
    min-height: 156px;
    align-items: flex-start;
    justify-content: space-between;
    flex-direction: column;
    gap: 1.1rem;
    padding: 1.25rem 1.4rem;
    border: 0;
    border-radius: 20px;
    background: var(--bg-surface);
    box-shadow: none;
}

.stat-card:hover {
    border: 0;
    background: color-mix(in srgb, var(--bg-surface) 86%, var(--accent-light));
    box-shadow: none;
    transform: none;
}

.stat-icon {
    width: 37px;
    height: 37px;
    flex-basis: 37px;
    border-radius: 12px;
    font-size: 0.94rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 650;
    letter-spacing: -0.055em;
}

.stat-label {
    font-size: 0.79rem;
}

.card {
    padding: clamp(1.5rem, 4vw, 2.5rem);
    border: 0;
    border-radius: 24px;
    background: var(--bg-surface);
    box-shadow: none;
}

.card h2 {
    font-size: clamp(1.65rem, 3vw, 2.35rem);
    font-weight: 650;
    letter-spacing: -0.055em;
}

.subtitle {
    max-width: 800px;
    margin-top: 0.65rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.selector-controls {
    border: 0;
    border-radius: 13px;
    background: #e9e9eb;
}

[data-theme="dark"] .selector-controls {
    background: #2c2c2e;
}

.bloques-accordion {
    gap: 0.6rem;
}

.bloque-group {
    border: 0;
    border-radius: 16px;
    background: var(--bg-primary);
    box-shadow: none;
}

.bloque-header {
    min-height: 62px;
    padding: 0.9rem 1.1rem;
    border-radius: inherit;
    background: transparent;
}

.bloque-header:hover {
    background: rgba(120, 120, 128, 0.07);
}

.bloque-header strong {
    color: var(--text-primary);
}

.temas-container {
    padding: 0.25rem 0.8rem 0.9rem;
    border: 0;
    background: transparent;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.temas-container .checkbox-label {
    min-height: 60px;
    padding: 0.8rem 0.9rem;
    border: 0;
    border-radius: 12px;
    background: var(--bg-surface);
    font-size: 0.84rem;
}

.temas-container .checkbox-label:hover {
    border: 0;
    background: #fdfdff;
    transform: none;
}

[data-theme="dark"] .temas-container .checkbox-label:hover {
    background: #29292b;
}

.temas-container .checkbox-label:has(input:checked) {
    background: var(--accent-light);
}

.form-control {
    min-height: 46px;
    border: 1px solid transparent;
    border-radius: 12px;
    background: #e9e9eb;
    box-shadow: none;
}

[data-theme="dark"] .form-control {
    background: #2c2c2e;
}

.form-control:focus {
    border-color: var(--accent-color);
    outline: 3px solid color-mix(in srgb, var(--accent-color) 18%, transparent);
}

.questions-preset-buttons .btn.active {
    border-color: var(--accent-color);
    background: var(--accent-color);
}

.simulacro-info-box,
.stats-summary-box,
.info-box-highlight,
.alert,
.notice-card,
.collapsible-section,
.scenario-card,
.result-block-card {
    border: 0;
    border-radius: 16px;
    background: var(--bg-primary);
}

.info-box-highlight {
    border-left: 3px solid var(--accent-color);
}

.radio-card {
    border-color: transparent;
    border-radius: 16px;
    background: var(--bg-primary);
}

.radio-card:has(input:checked) {
    border-color: var(--accent-color);
    background: var(--accent-light);
    box-shadow: none;
}

.question-card {
    border: 0;
    border-radius: 24px;
    box-shadow: none;
}

.option-btn {
    border-color: transparent;
    border-radius: 15px;
    background: var(--bg-primary);
}

.option-btn:hover:not(:disabled) {
    background: var(--accent-light);
}

.option-btn.selected {
    border-color: var(--accent-color);
    background: var(--accent-light);
}

.explanation-box {
    border: 0;
    border-radius: 16px;
    background: var(--bg-primary);
}

.score-summary-card {
    border: 0;
    border-radius: 22px;
    background: var(--bg-primary);
}

.data-table th {
    background: var(--bg-primary);
}

.badge-bloque {
    border: 0;
    background: var(--accent-light);
    color: var(--accent-color);
}

.badge-tema {
    border: 0;
}

.loading-overlay {
    background: rgba(0, 0, 0, 0.42);
    backdrop-filter: blur(14px);
}

.spinner-card {
    border: 0;
    border-radius: 24px;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.18);
}

@media (max-width: 1100px) {
    .sidebar {
        justify-content: flex-start;
    }

    .brand {
        padding-right: 0.75rem;
        padding-left: 1rem;
    }

    .sidebar-footer {
        padding-right: 0.75rem;
        padding-left: 0.5rem;
    }

    .nav-menu {
        justify-content: flex-start;
    }

    .nav-btn {
        padding-right: 0.5rem;
        padding-left: 0.5rem;
    }
}

@media (max-width: 768px) {
    html {
        scroll-padding-top: 130px;
    }

    .sidebar {
        position: sticky;
        top: 0;
        width: 100%;
        height: auto;
        min-height: 94px;
        display: grid;
        grid-template-columns: 1fr auto;
        grid-template-rows: 48px 44px;
        justify-content: initial;
        transform: none;
    }

    .brand {
        min-height: 0;
        padding: 0 1rem;
        grid-column: 1;
        grid-row: 1;
    }

    .nav-menu {
        padding: 0 0.55rem;
        grid-column: 1 / -1;
        grid-row: 2;
    }

    .nav-btn {
        min-height: 32px;
        padding: 0.35rem 0.6rem;
        font-size: 0.76rem;
    }

    .sidebar-footer {
        grid-column: 2;
        grid-row: 1;
        justify-self: end;
    }

    .main-content {
        min-height: calc(100vh - 94px);
        margin-left: 0;
    }

    #mobile-menu-toggle {
        display: none;
    }

    .top-bar {
        min-height: 54px;
        padding: 0.5rem 1.1rem;
    }

    .container {
        padding: 0 1.1rem 2.5rem;
    }

    .hero-card {
        min-height: 330px;
        padding: 2rem;
        border-radius: 24px;
    }

    .syllabus-update-banner {
        gap: 0.7rem;
        padding: 0.9rem;
    }

    .hero-card::after {
        right: -110px;
        bottom: -190px;
        width: 300px;
        height: 300px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .stat-card {
        min-height: 132px;
        padding: 1rem;
    }

    .temas-container {
        grid-template-columns: 1fr;
    }

    .results-grid-2 {
        grid-template-columns: 1fr;
    }

    .sidebar.open {
        transform: none;
    }
}

@media (max-width: 480px) {
    .sidebar {
        min-height: 92px;
        grid-template-rows: 46px 44px;
    }

    .brand-icon {
        width: 29px;
        height: 29px;
    }

    .sidebar-footer .badge {
        padding: 0.25rem 0.45rem;
        font-size: 0.58rem;
    }

    .nav-menu {
        gap: 0;
    }

    .nav-btn {
        gap: 0.3rem;
        padding: 0.3rem 0.5rem;
        font-size: 0.7rem;
    }

    .nav-btn .icon {
        font-size: 0.78rem;
    }

    .hero-card {
        min-height: 300px;
        padding: 1.5rem;
        border-radius: 21px;
    }

    .hero-card h2 {
        font-size: clamp(2.35rem, 12vw, 3.2rem);
    }

    .hero-actions .btn {
        width: auto;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.55rem;
    }

    .stat-card {
        min-height: 122px;
        gap: 0.65rem;
        padding: 0.85rem;
    }

    .stat-value {
        font-size: 1.45rem;
    }

    .card {
        padding: 1.25rem;
        border-radius: 19px;
    }

    .score-breakdown {
        align-items: center;
    }
}

.site-footer {
    width: min(100%, 1120px);
    margin: auto auto 0;
    padding: 1.25rem 2rem 1.75rem;
    color: var(--text-muted);
    text-align: center;
}

.site-footer p {
    margin: 0;
    font-size: 0.76rem;
    line-height: 1.6;
}

.site-footer a {
    color: inherit;
    font-weight: 500;
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .site-footer {
        padding: 1rem 1.1rem 1.5rem;
    }
}