/* Modern Theme - LINGFENG MEDIA */

/* --- Variables & Reset --- */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #0f172a;
    --accent-color: #f59e0b;
    --text-color: #334155;
    --text-light: #64748b;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --max-width: 1280px;
}

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

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

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    color: var(--secondary-color);
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.75rem; }
p { margin-bottom: 1.5rem; color: var(--text-light); }

.section-title {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* --- Header & Navigation --- */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: 80px;
    display: flex;
    align-items: center;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo h1 {
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0;
}

nav ul {
    display: flex;
    gap: 2rem;
}

nav ul li a {
    font-weight: 500;
    font-size: 1rem;
    color: var(--secondary-color);
    padding: 0.5rem 0;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s;
}

nav ul li a:hover::after {
    width: 100%;
}

nav ul li a:hover {
    color: var(--primary-color);
}

/* --- Hero Section --- */
.hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%), url('images/hero-bg.svg');
    background-size: cover;
    background-position: center;
    background-blend-mode: overlay;
    color: var(--white);
    padding: 180px 0 120px;
    text-align: center;
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
    margin-bottom: 4rem;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 1s ease-out;
}

.hero-content h2 {
    color: var(--white);
    font-size: 4rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.hero-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.5rem;
    margin-bottom: 3rem;
    font-weight: 300;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: var(--shadow-lg);
    border: 2px solid transparent;
}

.btn:hover {
    background: transparent;
    border-color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* --- Sections Common --- */
.section {
    padding: 6rem 0;
}

.bg-light {
    background-color: var(--bg-light);
}

/* --- About Content --- */
.about-content {
    display: flex;
    justify-content: center;
}

.about-text {
    max-width: 900px;
    text-align: center;
    font-size: 1.125rem;
    line-height: 1.8;
}

.about-text p {
    margin-bottom: 2rem;
}

/* --- Services Grid --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-item {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    text-align: center;
    border: 1px solid var(--border-color);
}

.service-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.service-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    display: inline-block;
    padding: 1rem;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 50%;
}

.service-item h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

/* --- About Page --- */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.culture-item {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.culture-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.culture-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    display: inline-block;
}

/* --- Services Page Process --- */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
    position: relative;
}

.step-item {
    text-align: center;
    position: relative;
    padding: 2rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.step-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.step-item::before {
    counter-increment: step;
    content: "0" counter(step);
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: rgba(37, 99, 235, 0.1);
    margin-bottom: 1rem;
    line-height: 1;
}

.process-steps {
    counter-reset: step;
}

/* --- Contact Page Layout --- */
.contact-page-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: var(--max-width);
    margin: 0 auto;
    align-items: start;
}

.contact-info-full h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.contact-info-list {
    margin-top: 2rem;
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

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

.contact-info-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 50%;
}

.contact-info-item div h3 {
    font-size: 1.1rem;
    margin-bottom: 0.2rem;
}

.contact-info-item div p {
    margin-bottom: 0;
    color: var(--text-color);
    font-weight: 500;
}

@media (max-width: 900px) {
    .contact-page-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

/* --- Detailed Service List (New) --- */
.service-list-full {
    margin-top: 6rem;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 4rem;
    border: 1px solid var(--border-color);
}

.service-list-full h3 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
}

.service-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 3rem;
}

.category-group {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    transition: all 0.3s;
    border-top: 4px solid var(--primary-color);
}

.category-group:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    background: var(--white);
}

.category-group h4 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--secondary-color);
}

.category-group h4 i {
    color: var(--primary-color);
}

.category-group ul li {
    padding: 0.5rem 0 0.5rem 1.5rem;
    position: relative;
    border-bottom: 1px dashed var(--border-color);
}

.category-group ul li:last-child {
    border-bottom: none;
}

.category-group ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* --- Contact Section --- */
.contact-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.contact-item {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    min-width: 280px;
    transition: transform 0.3s;
    border: 1px solid var(--border-color);
}

.contact-item:hover {
    transform: translateY(-5px);
}

.contact-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.contact-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.contact-item p {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0;
}

/* --- Page Header (Subpages) --- */
.page-header {
    background: linear-gradient(135deg, #0f172a 0%, #334155 100%);
    color: var(--white);
    padding: 6rem 0;
    text-align: center;
    margin-bottom: 4rem;
}

.page-header h2 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: 1rem;
}

.breadcrumb {
    color: rgba(255,255,255,0.7);
    font-size: 1rem;
}

.breadcrumb a {
    color: var(--white);
    border-bottom: 1px solid rgba(255,255,255,0.3);
}

.breadcrumb a:hover {
    border-bottom-color: var(--white);
}

/* --- News Grid --- */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2.5rem;
}

.news-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    border: 1px solid var(--border-color);
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.news-img {
    height: 240px;
    background-size: cover;
    background-position: center;
    transition: transform 0.5s;
}

.news-card:hover .news-img {
    transform: scale(1.05);
}

.news-content {
    padding: 2rem;
}

.news-date {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-light);
    color: var(--text-light);
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-weight: 500;
}

.news-title {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    line-height: 1.4;
}

/* --- Timeline --- */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 4rem auto;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 3rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.6rem; /* Adjust for padding-left of parent + own width */
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    background: var(--primary-color);
    border: 4px solid var(--white);
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--border-color);
    z-index: 1;
}

.timeline-year {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* --- Contact Form --- */
.contact-container {
    max-width: 800px;
    margin: 0 auto;
}

.contact-form {
    background: var(--white);
    padding: 3rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.form-group label {
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    display: block;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-light);
    transition: all 0.2s;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--white);
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

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

/* --- Footer --- */
footer {
    background: var(--secondary-color);
    color: var(--text-light);
    padding: 4rem 0;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
}

footer p {
    color: rgba(255,255,255,0.6);
    margin-bottom: 0;
}

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Responsive --- */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    header .container {
        flex-direction: column;
        gap: 1rem;
        height: auto;
        padding: 1rem;
    }
    
    nav ul {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .section {
        padding: 4rem 0;
    }
    
    .service-list-full {
        padding: 2rem;
    }
}