/* 
  Global theme tokens
  All comments are in English to follow project requirements.
*/
:root {
    --primary: #003366;
    --primary-soft: #f0f5fb;
    --gold: #c0935d;
    --bg: #f4f7f9;
    --text-main: #333333;
    --text-sub: #666666;
    --border-soft: #e1e6ed;
    --radius-lg: 20px;
    --radius-md: 12px;
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.08);
    --btn-height: 52px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 16px;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    background: radial-gradient(circle at top, #ffffff 0, var(--bg) 55%, #dde5f0 100%);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
}

.app-shell {
    max-width: 720px;
    margin: 8px auto 32px;
}

.container {
    background: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    padding: 24px 20px 24px;
}

@media (min-width: 768px) {
    body {
        padding: 32px 24px;
    }

    .container {
        padding: 32px 32px 28px;
    }
}

/* Page visibility control */
.page {
    display: none;
}

.page.active {
    display: block;
}

/* Intro section */
.intro-header {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 12px;
}

.brand-badge {
    align-self: flex-start;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid rgba(0, 51, 102, 0.15);
    background: linear-gradient(135deg, rgba(0, 51, 102, 0.06), rgba(192, 147, 93, 0.05));
    font-size: 0.75rem;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.brand-title {
    font-weight: 700;
    letter-spacing: 0.08em;
}

.brand-subtitle {
    opacity: 0.8;
}

.welcome-title {
    margin: 0;
    color: var(--primary);
    font-size: 1.32rem;
    line-height: 1.45;
}

@media (min-width: 768px) {
    .welcome-title {
        font-size: 1.6rem;
    }
}

.welcome-text {
    margin: 16px 0 20px;
    font-size: 0.98rem;
    line-height: 1.7;
    color: var(--text-sub);
}

.welcome-note {
    color: #999999;
}

.intro-media-slot {
    margin: 12px 0 18px;
    border-radius: var(--radius-md);
    border: 1px dashed rgba(0, 51, 102, 0.16);
    background: repeating-linear-gradient(
        135deg,
        rgba(0, 51, 102, 0.03),
        rgba(0, 51, 102, 0.03) 10px,
        rgba(0, 51, 102, 0.01) 10px,
        rgba(0, 51, 102, 0.01) 20px
    );
    min-height: 60px;
}

/* Section titles */
.section-title {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--primary);
}

.section-subtitle {
    margin: 6px 0 0;
    font-size: 0.9rem;
    color: var(--text-sub);
}

.section-subtitle.with-accent {
    border-left: 4px solid var(--primary);
    padding-left: 10px;
    font-weight: 600;
    margin-top: 22px;
}

.test-header,
.result-header {
    margin-bottom: 14px;
}

/* Progress bar */
.progress-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
}

.progress-bar-bg {
    flex: 1;
    height: 7px;
    border-radius: 999px;
    background: #edf1f6;
    overflow: hidden;
}

.progress-bar-inner {
    width: 0%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary), #00539b);
    transition: width 0.25s ease-out;
}

.progress-text {
    font-size: 0.78rem;
    color: #9aa3b3;
    min-width: 48px;
    text-align: right;
}

/* Question & options */
.questions-wrapper {
    min-height: 210px;
}

.q-text {
    font-size: 1.04rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 18px;
    line-height: 1.55;
}

.options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.opt-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 14px;
    border-radius: var(--radius-md);
    border: 1.5px solid #edf2f7;
    background: #ffffff;
    cursor: pointer;
    font-size: 0.96rem;
    color: var(--text-main);
    transition: background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.08s ease;
}

.opt-btn:hover {
    border-color: rgba(0, 51, 102, 0.35);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.opt-btn.selected {
    border-color: var(--primary);
    background: var(--primary-soft);
    box-shadow: 0 6px 20px rgba(0, 51, 102, 0.18);
}

.opt-btn input {
    transform: scale(1.2);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.98rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0 16px;
    height: var(--btn-height);
    transition: background 0.16s ease, box-shadow 0.16s ease, transform 0.06s ease, color 0.16s ease;
    white-space: nowrap;
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background: linear-gradient(135deg, #003366, #00549d);
    color: #ffffff;
    box-shadow: 0 8px 20px rgba(0, 51, 102, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #003f7f, #0066b8);
}

.btn-secondary {
    background: #ecf1f5;
    color: #667180;
}

.btn-secondary:hover {
    background: #dde4ec;
}

.btn-dark {
    background: #222222;
    color: #ffffff;
}

.btn-dark:hover {
    background: #111111;
}

.btn-full {
    width: 100%;
    margin-top: 6px;
}

.btn-nav {
    flex: 1;
}

.btn-nav + .btn-nav {
    margin-left: 10px;
}

button:disabled,
button[disabled] {
    opacity: 0.55;
    cursor: not-allowed;
    box-shadow: none;
}

.nav-footer {
    margin-top: 24px;
    display: flex;
}

/* Result layout */
.result-code-panel {
    margin: 8px 0 20px;
    text-align: center;
}

.result-code-label {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--text-sub);
    margin-bottom: 4px;
}

.code-display {
    font-size: 2.3rem;
    color: var(--gold);
    font-weight: 800;
    letter-spacing: 6px;
}

.chart-card {
    margin-top: 4px;
    padding: 14px 12px 10px;
    border-radius: var(--radius-md);
    background: var(--primary-soft);
    /* Fix height for radar chart container so it does not grow endlessly */
    position: relative;
    height: 260px;
}

.chart-title {
    margin: 0 0 6px;
    font-size: 0.92rem;
    color: var(--primary);
}

.high-point-analysis {
    background: #f2f5f9;
    border-radius: var(--radius-md);
    padding: 16px 14px 14px;
    margin-top: 18px;
}

.combo-title {
    margin: 0 0 6px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
}

.combo-desc {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-main);
    line-height: 1.6;
}

.career-section {
    margin-top: 18px;
}

.career-recommendations {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.career-tag {
    display: inline-block;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 0.88rem;
    font-weight: 500;
}

.major-recommendations {
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.major-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 14px 14px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-soft);
    background: #ffffff;
    border-left: 5px solid var(--gold);
}

.major-card-title {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-main);
}

.major-card-subtitle {
    font-size: 0.8rem;
    color: var(--text-sub);
}

.jump-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--primary);
    color: #ffffff;
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
}

.jump-btn:hover {
    background: #00427f;
}

.result-media-slot {
    margin-top: 18px;
    border-radius: var(--radius-md);
    border: 1px dashed rgba(192, 147, 93, 0.5);
    background: rgba(192, 147, 93, 0.04);
    min-height: 70px;
}

/* Intro video overlay */
.intro-video-overlay {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: #000000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    pointer-events: auto;
    transition: opacity 0.6s ease;
}

.intro-video-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.intro-video {
    max-width: 100%;
    max-height: 100%;
    display: block;
}

/* Ensure radar chart canvas fills its card without causing extra scroll */
.chart-card canvas {
    width: 100% !important;
    height: 100% !important;
    display: block;
}

/* Larger screen adjustments */
@media (min-width: 900px) {
    .app-shell {
        max-width: 820px;
    }

    .nav-footer {
        margin-top: 28px;
    }

    .questions-wrapper {
        min-height: 240px;
    }

    .chart-card {
        height: 320px;
    }
}