/* ===== CSS Variables ===== */
:root {
    --bg-primary: #faf8f5;
    --bg-card: rgba(0, 0, 0, 0.03);
    --bg-card-hover: rgba(0, 0, 0, 0.06);
    --color-red: #c43a31;
    --color-red-dark: #a02e27;
    --color-gold: #b8922e;
    --color-gold-dim: rgba(184, 146, 46, 0.25);
    --color-text: #2a2a2a;
    --color-text-dim: rgba(42, 42, 42, 0.65);
    --color-text-dimmer: rgba(42, 42, 42, 0.35);
    --font-serif: 'Noto Serif SC', serif;
    --font-sans: 'Noto Sans SC', sans-serif;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.4s ease;
}

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

html, body {
    height: 100%;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(196, 58, 49, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(212, 168, 71, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(196, 58, 49, 0.03) 0%, transparent 50%);
    background-attachment: fixed;
}

#app {
    min-height: 100vh;
    position: relative;
}

.page {
    display: none;
    min-height: 100vh;
    position: relative;
}

.page.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn var(--transition-slow) ease;
}

.container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: 24px 20px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 14px 48px;
    border: none;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    letter-spacing: 2px;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-red), var(--color-red-dark));
    color: #fff;
    box-shadow: 0 4px 15px rgba(196, 58, 49, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196, 58, 49, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-dim);
    border: 1px solid var(--color-text-dimmer);
}

.btn-secondary:hover {
    border-color: var(--color-text-dim);
    color: var(--color-text);
}

/* ===== Seal (印章) ===== */
.seal {
    width: 100px;
    height: 100px;
    border: 3px solid var(--color-red);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    position: relative;
    transform: rotate(-15deg);
    opacity: 0.9;
}

.seal::before {
    content: '';
    position: absolute;
    inset: 4px;
    border: 1px solid var(--color-red);
    border-radius: 50%;
    opacity: 0.5;
}

.seal-inner {
    text-align: center;
}

.seal-text {
    font-family: var(--font-serif);
    font-size: 16px;
    font-weight: 900;
    color: var(--color-red);
    line-height: 1.3;
    letter-spacing: 2px;
}

.seal-small {
    width: 60px;
    height: 60px;
}

.seal-small .seal-text {
    font-size: 11px;
    letter-spacing: 1px;
}

/* ===== Intro Page ===== */
/* Intro background grid */
.intro-bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-content: center;
    gap: 8px;
    padding: 20px;
    opacity: 0.15;
    pointer-events: none;
    overflow: hidden;
}

.intro-bg-grid img {
    width: 140px;
    height: 140px;
    object-fit: contain;
}

#intro {
    position: relative;
}

.intro-container {
    text-align: center;
    padding-top: 60px;
    padding-bottom: 40px;
    position: relative;
    z-index: 1;
}

.title {
    font-family: var(--font-serif);
    font-size: 56px;
    font-weight: 900;
    color: var(--color-red);
    letter-spacing: 16px;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(196, 58, 49, 0.15);
}

.subtitle {
    font-family: var(--font-serif);
    font-size: 18px;
    color: var(--color-text);
    letter-spacing: 8px;
    margin-bottom: 4px;
}

.subtitle-en {
    font-size: 13px;
    color: var(--color-text-dim);
    letter-spacing: 1px;
    margin-bottom: 32px;
}

.dim-tags {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.dim-tag {
    padding: 6px 14px;
    border: 1px solid var(--color-gold-dim);
    border-radius: 20px;
    font-size: 13px;
    color: var(--color-gold);
    letter-spacing: 1px;
}

.intro-desc {
    font-size: 15px;
    color: var(--color-text-dim);
    line-height: 1.8;
    margin-bottom: 40px;
}

.disclaimer {
    margin-top: 24px;
    font-size: 12px;
    color: var(--color-text-dimmer);
}

/* ===== Quiz Page ===== */
.quiz-container {
    padding-top: 40px;
    padding-bottom: 40px;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--bg-card);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 12px;
    cursor: pointer;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-red), var(--color-gold));
    border-radius: 2px;
    transition: width var(--transition-normal);
    width: 0%;
}

.progress-text {
    text-align: center;
    font-size: 13px;
    color: var(--color-text-dim);
    margin-bottom: 32px;
}

.question-area {
    position: relative;
    overflow: hidden;
    min-height: 400px;
}

.question-card {
    transition: all var(--transition-normal);
}

.question-card.slide-out-left {
    animation: slideOutLeft var(--transition-normal) ease forwards;
}

.question-card.slide-in-right {
    animation: slideInRight var(--transition-normal) ease forwards;
}

.question-card.slide-out-right {
    animation: slideOutRight var(--transition-normal) ease forwards;
}

.question-card.slide-in-left {
    animation: slideInLeft var(--transition-normal) ease forwards;
}

.question-text {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 700;
    line-height: 1.8;
    margin-bottom: 28px;
    color: var(--color-text);
}

.options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option {
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--color-gold-dim);
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-text);
    position: relative;
    overflow: hidden;
}

.option::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(196, 58, 49, 0.08), rgba(184, 146, 46, 0.06));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.option:hover {
    border-color: var(--color-gold);
    background: var(--bg-card-hover);
    transform: translateY(-1px);
}

.option:hover::before {
    opacity: 1;
}

.option.selected {
    border-color: var(--color-red);
    background: rgba(196, 58, 49, 0.06);
}

.option.selected::before {
    opacity: 1;
}

.option-letter {
    display: inline-block;
    width: 24px;
    height: 24px;
    line-height: 24px;
    text-align: center;
    border-radius: 50%;
    background: var(--color-gold-dim);
    color: var(--color-gold);
    font-size: 12px;
    font-weight: 700;
    margin-right: 12px;
    flex-shrink: 0;
}

.option-content {
    display: flex;
    align-items: flex-start;
}

/* ===== Result Page ===== */
.result-container {
    padding-top: 40px;
    padding-bottom: 40px;
}

.share-cta {
    text-align: center;
    padding: 16px 20px;
    margin-bottom: 20px;
    background: rgba(212, 168, 71, 0.1);
    border: 1px solid var(--color-gold-dim);
    border-radius: 10px;
}

.share-cta p {
    font-size: 14px;
    color: var(--color-gold);
    margin-bottom: 12px;
}

.share-cta .btn {
    padding: 10px 32px;
    font-size: 14px;
}

.result-card {
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-red), var(--color-gold), var(--color-red));
}

.result-header {
    margin-bottom: 24px;
}

.result-badge {
    font-family: var(--font-serif);
    font-size: 14px;
    color: var(--color-gold);
    letter-spacing: 6px;
    padding: 6px 20px;
    border: 1px solid var(--color-gold-dim);
    border-radius: 4px;
}

.result-type-code {
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: 900;
    color: var(--color-red);
    letter-spacing: 8px;
    margin-bottom: 8px;
}

.result-emoji {
    font-size: 48px;
    margin-bottom: 12px;
}

.result-avatar {
    width: 100%;
    max-width: 360px;
    height: auto;
    object-fit: contain;
}

.result-type-name {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

.result-tagline {
    font-size: 15px;
    color: var(--color-red);
    margin-bottom: 24px;
    font-style: italic;
}

.result-desc {
    font-size: 14px;
    line-height: 1.9;
    color: var(--color-text-dim);
    text-align: left;
    margin-bottom: 28px;
    padding: 0 4px;
}

.dimension-bars {
    margin-bottom: 28px;
}

.dim-bar-row {
    display: flex;
    align-items: center;
    margin-bottom: 14px;
    gap: 10px;
}

.dim-bar-label {
    font-size: 13px;
    font-weight: 500;
    width: 28px;
    text-align: center;
    flex-shrink: 0;
}

.dim-bar-label.left {
    color: var(--color-red);
}

.dim-bar-label.right {
    color: var(--color-gold);
}

.dim-bar-track {
    flex: 1;
    height: 8px;
    background: rgba(0, 0, 0, 0.06);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.dim-bar-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    border-radius: 4px;
    transition: width 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    width: 0%;
}

.dim-bar-fill.left-fill {
    background: linear-gradient(90deg, var(--color-red), rgba(196, 58, 49, 0.2));
    left: 0;
}

.dim-bar-fill.right-fill {
    background: linear-gradient(270deg, var(--color-gold), rgba(184, 146, 46, 0.2));
    right: 0;
    left: auto;
}

.dim-bar-pct {
    font-size: 11px;
    color: var(--color-text-dimmer);
    width: 36px;
    text-align: center;
    flex-shrink: 0;
}

.result-tips {
    text-align: left;
    padding: 16px;
    background: rgba(196, 58, 49, 0.04);
    border-left: 3px solid var(--color-red);
    border-radius: 0 8px 8px 0;
    margin-bottom: 24px;
}

.result-tips p {
    font-size: 13px;
    line-height: 1.8;
    color: var(--color-text-dim);
}

.result-seal {
    margin-bottom: 16px;
}

.result-footer {
    font-size: 12px;
    color: var(--color-text-dimmer);
    letter-spacing: 2px;
}

.result-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    justify-content: center;
}

.result-actions .btn {
    flex: 1;
    padding: 14px 16px;
    font-size: 15px;
}

.share-hint {
    text-align: center;
    margin-top: 20px;
}

.share-hint p {
    font-size: 13px;
    color: var(--color-text-dim);
    margin-bottom: 12px;
}

.share-hint img {
    width: 100%;
    max-width: 400px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* ===== Animations & Responsive ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideOutLeft {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(-100%); opacity: 0; }
}

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutRight {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

@keyframes slideInLeft {
    from { transform: translateX(-100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes barGrow {
    from { width: 0%; }
}

@media (max-width: 400px) {
    .title {
        font-size: 44px;
        letter-spacing: 12px;
    }

    .subtitle {
        font-size: 16px;
        letter-spacing: 6px;
    }

    .dim-tags {
        gap: 8px;
    }

    .dim-tag {
        padding: 5px 10px;
        font-size: 12px;
    }

    .result-type-code {
        font-size: 40px;
    }

    .result-type-name {
        font-size: 24px;
    }

    .result-actions {
        flex-direction: column;
    }
}

::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 2px;
}