/* =====================================
   全局样式与变量
===================================== */
:root {
    --color-primary: #e91e8c;
    --color-secondary: #7c4dff;
    --color-success: #4caf50;
    --color-warning: #ff9800;
    --color-danger: #f44336;
    --color-info: #2196f3;
    
    --bg-dark: #0a0e27;
    --bg-card: rgba(20, 26, 55, 0.95);
    --bg-card-hover: rgba(30, 36, 75, 0.98);
    --border-color: rgba(255, 255, 255, 0.1);
    
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* =====================================
   粒子背景动画
===================================== */
.particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1236 50%, #0a0e27 100%);
}

.particles-bg::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(233, 30, 140, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(124, 77, 255, 0.1) 0%, transparent 50%);
    animation: particleBg 20s ease-in-out infinite;
}

@keyframes particleBg {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-10%, -10%) rotate(180deg); }
}

/* =====================================
   主容器
===================================== */
.app-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* =====================================
   屏幕切换
===================================== */
.screen {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-slow);
    display: none;
}

.screen.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    display: block;
    animation: fadeSlideIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =====================================
   欢迎页
===================================== */
.welcome-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: 60px 40px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.card-anim {
    animation: cardFloat 4s ease-in-out infinite;
}

@keyframes cardFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.welcome-icon-wrap {
    position: relative;
    display: inline-block;
    margin-bottom: 30px;
}

.welcome-icon {
    font-size: 80px;
    position: relative;
    z-index: 2;
    animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.icon-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 2px solid;
    animation: ringPulse 3s ease-in-out infinite;
}

.ring-1 {
    width: 120px;
    height: 120px;
    border-color: var(--color-primary);
    opacity: 0.4;
}

.ring-2 {
    width: 150px;
    height: 150px;
    border-color: var(--color-secondary);
    opacity: 0.3;
    animation-delay: 0.5s;
}

@keyframes ringPulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.4;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.1;
    }
}

.welcome-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.welcome-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.theory-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 40px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: all var(--transition-base);
}

.tag:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.welcome-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    margin: 40px 0;
    padding: 30px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-num {
    font-size: 36px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-lbl {
    font-size: 14px;
    color: var(--text-tertiary);
    margin-top: 5px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

.welcome-desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
}

.welcome-desc strong {
    color: var(--color-primary);
}

.disclaimer {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 30px;
}

/* =====================================
   按钮样式
===================================== */
.btn-primary, .btn-secondary {
    position: relative;
    padding: 16px 40px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(233, 30, 140, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(233, 30, 140, 0.6);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: white;
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
}

.btn-secondary:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-large {
    padding: 20px 50px;
    font-size: 18px;
}

.btn-arrow {
    transition: transform var(--transition-fast);
}

.btn-primary:hover .btn-arrow {
    transform: translateX(5px);
}

/* =====================================
   问题页
===================================== */
.quiz-wrap {
    width: 100%;
}

.quiz-header {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    padding: 25px 30px;
    border-radius: var(--radius-lg);
    margin-bottom: 25px;
    border: 1px solid var(--border-color);
}

.progress-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.q-counter {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.q-pct {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary);
}

.progress-track {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 100px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 100px;
    transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progressShine 2s ease-in-out infinite;
}

@keyframes progressShine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.question-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    margin-bottom: 25px;
    animation: cardSlideIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes cardSlideIn {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.question-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.q-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-md);
    font-size: 20px;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(233, 30, 140, 0.3);
}

.q-icon {
    font-size: 32px;
    animation: iconBounce 2s ease-in-out infinite;
}

@keyframes iconBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.q-text {
    font-size: 24px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.options-wrap {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.option-btn {
    width: 100%;
    padding: 20px 25px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 16px;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: 15px;
}

.option-btn::before {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    flex-shrink: 0;
    transition: all var(--transition-base);
}

.option-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-primary);
    transform: translateX(5px);
}

.option-btn.selected {
    background: linear-gradient(135deg, rgba(233, 30, 140, 0.2), rgba(124, 77, 255, 0.2));
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(233, 30, 140, 0.3);
}

.option-btn.selected::before {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(233, 30, 140, 0.2);
}

.quiz-nav {
    display: flex;
    gap: 15px;
    justify-content: space-between;
}

.btn-nav {
    flex: 1;
    padding: 16px 30px;
}

/* =====================================
   结果页
===================================== */
.result-wrap {
    width: 100%;
}

.result-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    padding: 50px 40px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.result-heading {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.score-ring-wrap {
    position: relative;
    width: 260px;
    height: 260px;
    margin: 0 auto 40px;
}

.score-svg {
    width: 100%;
    height: 100%;
}

.ring-track {
    fill: none;
    stroke: rgba(255, 255, 255, 0.1);
    stroke-width: 12;
}

.ring-progress {
    fill: none;
    stroke: url(#ringGrad);
    stroke-width: 12;
    stroke-linecap: round;
    transition: stroke-dashoffset 2s cubic-bezier(0.16, 1, 0.3, 1);
    filter: drop-shadow(0 0 10px rgba(233, 30, 140, 0.5));
}

.score-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.score-pct {
    font-size: 56px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: scoreCount 2s ease-out;
}

@keyframes scoreCount {
    from { opacity: 0; transform: scale(0.5); }
    to { opacity: 1; transform: scale(1); }
}

.score-lbl {
    font-size: 14px;
    color: var(--text-tertiary);
    margin-top: 5px;
}

.result-badge {
    display: inline-block;
    padding: 12px 30px;
    border-radius: var(--radius-lg);
    font-size: 20px;
    font-weight: 600;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: var(--shadow-md);
}

.result-desc {
    text-align: center;
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 50px;
    padding: 0 20px;
}

.info-card {
    padding: 22px 20px;
    margin-bottom: 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: var(--shadow-md);
}

.warning-card {
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.15), rgba(244, 67, 54, 0.12));
    border-color: rgba(255, 152, 0, 0.5);
}

.window-card {
    background: linear-gradient(135deg, rgba(124, 77, 255, 0.08), rgba(33, 150, 243, 0.08));
    border-color: rgba(124, 77, 255, 0.4);
}

.info-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    gap: 10px;
}

.info-card-title {
    font-size: 18px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.info-badge {
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    font-size: 12px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.info-badge.subtle {
    background: rgba(255, 255, 255, 0.06);
}

.info-line {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 8px;
}

.fallback-rate {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-warning);
    background: rgba(255, 152, 0, 0.12);
    border: 1px dashed rgba(255, 152, 0, 0.6);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    display: inline-block;
    box-shadow: 0 6px 20px rgba(255, 152, 0, 0.15);
}

.info-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 10px 0;
}

.info-subtitle {
    font-size: 14px;
    color: var(--text-tertiary);
    letter-spacing: 0.5px;
}

.info-highlight {
    padding: 6px 12px;
    border-radius: var(--radius-md);
    background: rgba(124, 77, 255, 0.15);
    color: #e4daff;
    border: 1px solid rgba(124, 77, 255, 0.5);
    font-weight: 700;
}

.info-muted {
    color: var(--text-tertiary);
    font-size: 14px;
    line-height: 1.6;
}

.section-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.advice-section {
    margin-bottom: 40px;
}

.advice-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.advice-list li {
    padding: 18px 22px;
    background: rgba(255, 255, 255, 0.05);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 16px;
    line-height: 1.7;
    transition: all var(--transition-base);
}

.advice-list li:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(5px);
}

.deep-card {
    margin-bottom: 40px;
    padding: 28px 24px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.deep-desc {
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.7;
}

.deep-list {
    list-style: none;
    padding: 0;
    margin: 0 0 12px 0;
    display: grid;
    gap: 8px;
    color: var(--text-primary);
}

.deep-divider {
    height: 1px;
    background: var(--border-color);
    margin: 16px 0;
}

.deep-includes-title {
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.deep-btn {
    width: 100%;
    margin-top: 12px;
    justify-content: center;
}

.dimension-section {
    margin-bottom: 40px;
}

.dimension-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.dimension-item {
    padding: 25px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.dimension-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.dim-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.dim-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.dim-score {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
}

.dim-bar-track {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 100px;
    overflow: hidden;
}

.dim-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 100px;
    transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.result-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 40px;
}

/* 微信弹窗 */
.wechat-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    backdrop-filter: blur(6px);
}

.wechat-modal {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 22px 20px 20px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 22px;
    cursor: pointer;
    line-height: 1;
}

.modal-desc {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.modal-steps {
    margin: 0 0 14px 18px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.qr-wrapper {
    position: relative;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.03);
}

.qr-img {
    width: 220px;
    height: 220px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    display: block;
}

.qr-fallback {
    position: absolute;
    color: var(--text-tertiary);
    font-size: 14px;
}

.modal-actions {
    margin-top: 14px;
    display: flex;
    justify-content: flex-end;
}

/* =====================================
   响应式设计
===================================== */
@media (max-width: 768px) {
    .welcome-card {
        padding: 40px 25px;
    }

    .welcome-title {
        font-size: 32px;
    }

    .welcome-subtitle {
        font-size: 16px;
    }

    .welcome-icon {
        font-size: 60px;
    }

    .ring-1 {
        width: 100px;
        height: 100px;
    }

    .ring-2 {
        width: 130px;
        height: 130px;
    }

    .welcome-stats {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .theory-tags {
        gap: 8px;
    }

    .tag {
        font-size: 12px;
        padding: 6px 12px;
    }

    .question-card {
        padding: 25px 20px;
    }

    .q-text {
        font-size: 20px;
    }

    .option-btn {
        padding: 16px 18px;
        font-size: 15px;
    }

    .quiz-nav {
        flex-direction: column;
    }

    .btn-nav {
        width: 100%;
    }

    .result-card {
        padding: 35px 25px;
    }

    .deep-card {
        padding: 22px 18px;
    }

    .wechat-modal {
        max-width: 360px;
    }

    .result-heading {
        font-size: 28px;
    }

    .score-ring-wrap {
        width: 220px;
        height: 220px;
    }

    .score-pct {
        font-size: 48px;
    }

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

@media (max-width: 480px) {
    .welcome-card {
        padding: 30px 20px;
    }

    .welcome-title {
        font-size: 26px;
    }

    .stat-num {
        font-size: 28px;
    }

    .btn-large {
        padding: 16px 35px;
        font-size: 16px;
    }

    .question-card {
        padding: 20px 15px;
    }

    .q-text {
        font-size: 18px;
    }

    .result-heading {
        font-size: 24px;
    }

    .score-ring-wrap {
        width: 200px;
        height: 200px;
    }

    .score-pct {
        font-size: 42px;
    }
}