/* ============================================
   CSS Variables & Reset
   ============================================ */
:root {
    --primary-color: #d4a574;
    --primary-dark: #b8956a;
    --primary-light: #e8c9a8;
    --secondary-color: #8b7355;
    --text-primary: #2c2c2c;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-light: #faf9f7;
    --bg-white: #ffffff;
    --border-color: #e0dcd5;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --transition: all 0.3s ease;
    --font-main: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    --font-serif: 'Playfair Display', 'Cormorant Garamond', serif;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    color: var(--text-primary);
    line-height: 1.8;
    background-color: var(--bg-light);
    overflow-x: hidden;
}

/* ============================================
   Container
   ============================================ */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--primary-color);
}

.lang-selector select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-white);
    font-family: var(--font-main);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.lang-selector select:hover {
    border-color: var(--primary-color);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 60px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5f0eb 0%, #e8ddd4 50%, #ddd0c4 100%);
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('pic/20260106184430_1264_107.jpg') center/cover;
    opacity: 0.15;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2rem;
    max-width: 900px;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    opacity: 0;
    animation: fadeInUp 1s ease forwards;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 3rem;
    opacity: 0;
    animation: fadeInUp 1s ease 0.3s forwards;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 1s ease 0.6s forwards;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--bg-white);
    transform: translateY(-2px);
}

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

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

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator span {
    display: block;
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
    0% {
        transform: translateY(0) rotate(45deg);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateY(20px) rotate(45deg);
        opacity: 0;
    }
}

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

/* ============================================
   Section Styles
   ============================================ */
section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-divider {
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    margin: 0 auto;
}

/* ============================================
   About Section
   ============================================ */
.about {
    background: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text {
    padding-right: 2rem;
}

.about-intro {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

/* 花艺师个人简介 */
.artist-bio {
    background: linear-gradient(135deg, rgba(212, 165, 116, 0.08) 0%, rgba(255, 255, 255, 0.6) 100%);
    border-radius: 20px;
    padding: 3rem;
    margin-bottom: 3rem;
    border: 1px solid rgba(212, 165, 116, 0.2);
    position: relative;
    overflow: hidden;
}

.artist-bio::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(212, 165, 116, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.bio-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.bio-quote {
    grid-column: 1 / -1;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.quote-mark {
    font-family: var(--font-serif);
    font-size: 5rem;
    color: var(--primary-light);
    opacity: 0.3;
    line-height: 1;
    display: block;
    margin-bottom: -2rem;
}

.quote-text {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    line-height: 2;
    color: var(--text-primary);
    font-style: italic;
    padding: 0 2rem;
}

.bio-details h4 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    margin: 2rem 0 1rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.bio-details h4::before {
    content: '';
    width: 30px;
    height: 2px;
    background: var(--primary-color);
}

.bio-details p {
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 1.5rem;
    text-align: justify;
}

.bio-achievements {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(212, 165, 116, 0.2);
}

.achievement-item {
    text-align: center;
    padding: 2rem 1rem;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 12px;
    transition: var(--transition);
}

.achievement-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.achievement-number {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.achievement-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.skills {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.skill-item {
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
    transition: var(--transition);
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.skill-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.skill-item h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.skill-item p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.about-image {
    position: relative;
}

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

.image-grid img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 8px;
    transition: var(--transition);
}

.image-grid img:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* ============================================
   Services Section
   ============================================ */
.services {
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-card > p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.service-features li::before {
    content: '✦';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* ============================================
   Portfolio Section
   ============================================ */
.portfolio {
    background: var(--bg-white);
}

.portfolio-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 2px solid var(--border-color);
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--bg-white);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.portfolio-item.hidden {
    display: none;
}

.portfolio-img {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
}

.portfolio-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-item:hover .portfolio-img img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 2rem;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-overlay h3 {
    color: var(--bg-white);
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    transform: translateY(20px);
    transition: var(--transition);
}

.portfolio-overlay p {
    color: var(--bg-light);
    font-size: 0.95rem;
    transform: translateY(20px);
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay h3,
.portfolio-item:hover .portfolio-overlay p {
    transform: translateY(0);
}

.load-more {
    text-align: center;
    margin-top: 3rem;
}

/* ============================================
   Partnership Section
   ============================================ */
.partnership {
    background: linear-gradient(135deg, #f5f0eb 0%, #e8ddd4 100%);
}

.partnership-content {
    max-width: 1000px;
    margin: 0 auto;
}

.partnership-intro {
    text-align: center;
    font-size: 1.2rem;
    line-height: 2;
    color: var(--text-secondary);
    margin-bottom: 4rem;
}

.cooperation-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.cooperation-item {
    background: rgba(255, 255, 255, 0.8);
    padding: 2.5rem;
    border-radius: 16px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.cooperation-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    background: rgba(255, 255, 255, 0.95);
}

.cooperation-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.cooperation-item h3 {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.cooperation-item p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: var(--bg-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-details p {
    color: var(--text-secondary);
}

.contact-form {
    background: var(--bg-light);
    padding: 3rem;
    border-radius: 16px;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-main);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-group label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    color: var(--text-light);
    pointer-events: none;
    transition: var(--transition);
    background: var(--bg-white);
    padding: 0 0.5rem;
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label,
.form-group select:focus + label,
.form-group select:valid + label {
    top: -0.6rem;
    font-size: 0.85rem;
    color: var(--primary-color);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--text-primary);
    color: var(--bg-white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--primary-light);
}

.footer-section p {
    color: var(--text-light);
    line-height: 1.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    padding: 0.5rem 0;
}

.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-light);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    font-size: 1.5rem;
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.footer-bottom .icp-info {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--bg-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

.back-to-top.visible {
    display: flex;
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   Responsive Design - Tablet
   ============================================ */
@media (max-width: 968px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about-text {
        padding-right: 0;
    }

    .artist-bio {
        padding: 2rem;
    }

    .bio-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .bio-achievements {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .quote-text {
        font-size: 1.2rem;
    }

    .achievement-number {
        font-size: 2rem;
    }

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

    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

/* ============================================
   Responsive Design - Mobile
   ============================================ */
@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    section {
        padding: 4rem 0;
    }

    .navbar .container {
        padding: 1rem 1.5rem;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-white);
        flex-direction: column;
        padding: 2rem;
        transition: var(--transition);
        overflow-y: auto;
    }

    .nav-menu.active {
        left: 0;
    }

    .lang-selector {
        margin-top: 2rem;
    }

    .hero {
        min-height: 600px;
        margin-top: 60px;
    }

    .hero-buttons {
        flex-direction: column;
        padding: 0 1rem;
    }

    .btn {
        width: 100%;
        padding: 1rem 2rem;
    }

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

    .artist-bio {
        padding: 1.5rem;
    }

    .quote-text {
        font-size: 1.1rem;
        padding: 0;
    }

    .quote-mark {
        font-size: 3rem;
    }

    .bio-details h4 {
        font-size: 1.2rem;
    }

    .bio-achievements {
        grid-template-columns: 1fr;
        padding-top: 2rem;
        margin-top: 2rem;
    }

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

    .services-grid,
    .portfolio-grid,
    .cooperation-types {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .contact-form {
        padding: 2rem 1.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
    }
}

/* ============================================
   Responsive Design - Small Mobile
   ============================================ */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .service-card,
    .cooperation-item,
    .contact-form {
        padding: 1.5rem;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem 1rem;
    }

    .portfolio-filter {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    .section-header {
        margin-bottom: 3rem;
    }

    .about-intro,
    .partnership-intro {
        font-size: 1rem;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .navbar,
    .back-to-top,
    .footer,
    .load-more,
    .contact-form {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: 2rem 0;
    }

    section {
        page-break-inside: avoid;
    }
}

/* ============================================
   Animation Classes
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   Accessibility
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   Loading Animation
   ============================================ */
.loading {
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}