/* ==========================================
   YECO 首页样式
   高端奢华的黑金配色 + 响应式设计 + RTL支持
   ========================================== */

/* ==========================================
   基础样式重置
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--primary-black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* ==========================================
   伊斯兰纹样背景
   ========================================== */
.islamic-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 50px,
            rgba(212, 175, 55, 0.02) 50px,
            rgba(212, 175, 55, 0.02) 52px
        ),
        repeating-linear-gradient(
            -45deg,
            transparent,
            transparent 50px,
            rgba(212, 175, 55, 0.02) 50px,
            rgba(212, 175, 55, 0.02) 52px
        );
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
}

/* ==========================================
   容器
   ========================================== */
.container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 1;
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* ==========================================
   英雄区
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(
        ellipse at center,
        rgba(212, 175, 55, 0.08) 0%,
        transparent 70%
    );
    pointer-events: none;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

.hero-ornament {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
    margin: 0 auto var(--spacing-lg);
    animation: shimmer 3s infinite;
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--text-6xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--white), var(--light-gray));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    color: var(--accent-gold);
    margin-bottom: var(--spacing-lg);
    letter-spacing: 8px;
    font-weight: 300;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

.hero-description {
    font-size: var(--text-xl);
    color: var(--light-gray);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

.hero-cta {
    display: inline-block;
    padding: 16px 48px;
    background: linear-gradient(135deg, var(--accent-gold), var(--soft-gold));
    color: var(--primary-black);
    text-decoration: none;
    font-size: var(--text-lg);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
    letter-spacing: 1px;
    animation: fadeInUp 1s ease-out 0.8s backwards;
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.5);
    filter: brightness(1.1);
}

.hero-cta:active {
    transform: translateY(-1px);
}

.hero-scroll {
    margin-top: var(--spacing-xl);
    font-size: var(--text-sm);
    color: var(--medium-gray);
    animation: bounce 2s infinite;
    cursor: pointer;
}

@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-xxl) var(--spacing-md);
    }

    .hero-title {
        font-size: var(--text-4xl);
    }

    .hero-subtitle {
        font-size: var(--text-xl);
        letter-spacing: 4px;
    }

    .hero-description {
        font-size: var(--text-lg);
    }

    .hero-cta {
        padding: 14px 36px;
        font-size: var(--text-base);
    }
}

/* ==========================================
   区块标题
   ========================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--text-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--white), var(--accent-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: var(--text-xl);
    color: var(--warm-gray);
    font-weight: 300;
}

.subsection-title {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--accent-gold);
}

@media (max-width: 768px) {
    .section-title {
        font-size: var(--text-4xl);
    }

    .section-subtitle {
        font-size: var(--text-lg);
    }

    .subsection-title {
        font-size: var(--text-2xl);
    }
}

/* ==========================================
   品牌介绍区
   ========================================== */
.brand-intro {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--primary-black) 0%, var(--rich-black) 100%);
}

.brand-intro-content {
    margin-bottom: var(--spacing-xxl);
}

.lead {
    font-size: var(--text-xl);
    line-height: 2;
    color: var(--light-gray);
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

/* 核心价值观 */
.values-section {
    margin-bottom: var(--spacing-xxl);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.value-card {
    background: rgba(212, 175, 55, 0.03);
    border: 1px solid rgba(212, 175, 55, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.value-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(212, 175, 55, 0.2);
    background: rgba(212, 175, 55, 0.05);
}

.value-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    display: block;
}

.value-card h4 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-md);
    color: var(--accent-gold);
}

.value-card p {
    color: var(--light-gray);
    line-height: 1.8;
    font-size: var(--text-base);
}

/* 设计方法 */
.approach-section {
    margin-bottom: var(--spacing-xxl);
}

.approach-intro {
    font-size: var(--text-lg);
    line-height: 2;
    color: var(--light-gray);
    max-width: 900px;
    margin: 0 auto var(--spacing-xl);
    text-align: center;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.step-card {
    position: relative;
    background: rgba(26, 26, 26, 0.5);
    border: 1px solid rgba(212, 175, 55, 0.15);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-gold), var(--soft-gold));
    transform: scaleX(0);
    transition: transform var(--transition-base);
    transform-origin: left;
}

[dir="rtl"] .step-card::before {
    transform-origin: right;
}

.step-card:hover::before {
    transform: scaleX(1);
}

.step-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.15);
}

.step-number {
    font-family: var(--font-display);
    font-size: var(--text-5xl);
    font-weight: 700;
    color: rgba(212, 175, 55, 0.15);
    margin-bottom: var(--spacing-sm);
    line-height: 1;
}

.step-card h4 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--accent-gold);
}

.step-card p {
    color: var(--light-gray);
    line-height: 1.6;
    font-size: var(--text-sm);
}

@media (max-width: 768px) {
    .values-grid,
    .steps-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   趋势研究区
   ========================================== */
.research-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--rich-black) 0%, var(--charcoal) 100%);
}

.research-intro {
    font-size: var(--text-lg);
    line-height: 2;
    color: var(--light-gray);
    text-align: center;
    max-width: 900px;
    margin: 0 auto var(--spacing-xxl);
}

.latest-reports {
    margin-bottom: var(--spacing-xl);
}

.report-card {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.05), rgba(212, 175, 55, 0.02));
    border: 2px solid rgba(212, 175, 55, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 800px;
    margin: 0 auto;
    transition: all var(--transition-base);
}

.report-card:hover {
    border-color: var(--accent-gold);
    box-shadow: 0 12px 50px rgba(212, 175, 55, 0.25);
    transform: translateY(-5px);
}

.report-date {
    color: var(--accent-gold);
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.report-title {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.report-subtitle {
    font-size: var(--text-xl);
    color: var(--soft-gold);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.report-desc {
    color: var(--light-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    font-size: var(--text-base);
}

.report-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--accent-gold);
    transition: all var(--transition-fast);
}

.tag:hover {
    background: rgba(212, 175, 55, 0.2);
    border-color: var(--accent-gold);
}

.report-link {
    display: inline-flex;
    align-items: center;
    color: var(--accent-gold);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--text-lg);
    transition: all var(--transition-base);
}

.report-link:hover {
    color: var(--soft-gold);
    transform: translateX(5px);
}

[dir="rtl"] .report-link:hover {
    transform: translateX(-5px);
}

.research-cta {
    text-align: center;
}

.btn-secondary {
    display: inline-block;
    padding: 14px 40px;
    background: transparent;
    border: 2px solid var(--accent-gold);
    color: var(--accent-gold);
    text-decoration: none;
    font-size: var(--text-lg);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    letter-spacing: 0.5px;
}

.btn-secondary:hover {
    background: var(--accent-gold);
    color: var(--primary-black);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.4);
}

@media (max-width: 768px) {
    .report-title {
        font-size: var(--text-2xl);
    }

    .report-subtitle {
        font-size: var(--text-lg);
    }
}

/* ==========================================
   服务区
   ========================================== */
.services-section {
    padding: var(--spacing-3xl) 0;
    background: var(--primary-black);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: rgba(26, 26, 26, 0.5);
    border: 1px solid rgba(212, 175, 55, 0.1);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.service-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(212, 175, 55, 0.2);
    background: rgba(212, 175, 55, 0.05);
}

.service-icon {
    font-size: 64px;
    margin-bottom: var(--spacing-md);
    display: block;
    filter: grayscale(1);
    transition: filter var(--transition-base);
}

.service-card:hover .service-icon {
    filter: grayscale(0);
}

.service-card h4 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--accent-gold);
}

.service-card p {
    color: var(--light-gray);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

/* ==========================================
   CTA区
   ========================================== */
.cta-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--rich-black) 0%, var(--charcoal) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cta-ornament {
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
    margin: 0 auto var(--spacing-lg);
    animation: shimmer 3s infinite;
}

.cta-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--white), var(--accent-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-desc {
    font-size: var(--text-xl);
    color: var(--light-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.btn-primary {
    display: inline-block;
    padding: 18px 56px;
    background: linear-gradient(135deg, var(--accent-gold), var(--soft-gold));
    color: var(--primary-black);
    text-decoration: none;
    font-size: var(--text-xl);
    font-weight: 700;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    box-shadow: 0 6px 25px rgba(212, 175, 55, 0.4);
    letter-spacing: 1px;
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(212, 175, 55, 0.6);
    filter: brightness(1.15);
}

.btn-primary:active {
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .cta-title {
        font-size: var(--text-3xl);
    }

    .cta-desc {
        font-size: var(--text-lg);
    }

    .btn-primary {
        padding: 16px 40px;
        font-size: var(--text-lg);
    }
}


/* ==========================================
   滚动动画
   ========================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   关键帧动画
   ========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes shimmer {
    0% {
        opacity: 0.3;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0.3;
    }
}

/* ==========================================
   RTL 特定样式调整
   ========================================== */
[dir="rtl"] {
    font-family: var(--font-arabic);
}

[dir="rtl"] .hero-title,
[dir="rtl"] .section-title,
[dir="rtl"] .cta-title {
    font-family: var(--font-arabic);
}

[dir="rtl"] .nav-menu {
    flex-direction: row-reverse;
}

/* ==========================================
   打印样式
   ========================================== */
@media print {
    .hero,
    section {
        page-break-inside: avoid;
    }
}

/* ==========================================
   高对比度模式支持
   ========================================== */
@media (prefers-contrast: high) {
    .value-card,
    .step-card,
    .service-card,
    .report-card {
        border-width: 2px;
    }
}

/* ==========================================
   减少动画模式
   ========================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}