/* Website 81 - Magazine Layout with Left Sidebar */
:root {
    --primary-color: #e74c3c;
    --primary-dark: #c0392b;
    --secondary-color: #2c3e50;
    --accent-color: #e67e22;
    --bg-color: #f5f6fa;
    --card-bg: #ffffff;
    --text-color: #2d3436;
    --text-light: #636e72;
    --border-color: #dfe6e9;
    --sidebar-width: 280px;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
}

/* Magazine Layout Container */
.magazine-container {
    display: flex;
    min-height: 100vh;
}

/* Left Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--secondary-color) 0%, #1a252f 100%);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: var(--transition);
}

.sidebar-header {
    padding: 2rem 1.5rem;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    letter-spacing: 1px;
}

.sidebar-logo span {
    color: var(--primary-color);
}

.sidebar-tagline {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.6);
    margin-top: 0.5rem;
}

.sidebar-nav {
    padding: 1.5rem 0;
}

.nav-item {
    display: block;
    padding: 1rem 1.5rem;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: var(--transition);
    border-left: 3px solid transparent;
    font-size: 0.9rem;
}

.nav-item:hover, .nav-item.active {
    background: rgba(255,255,255,0.1);
    border-left-color: var(--primary-color);
    color: #fff;
}

.nav-item.active {
    background: rgba(231, 76, 60, 0.2);
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    position: absolute;
    bottom: 0;
    width: 100%;
}

.contact-card {
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    padding: 1rem;
}

.contact-card h4 {
    color: #fff;
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
}

.contact-card p {
    color: rgba(255,255,255,0.7);
    font-size: 0.8rem;
    margin: 0.3rem 0;
}

/* Main Content Area */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 2rem;
}

/* Hero Section */
.magazine-hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: 20px;
    padding: 3rem;
    color: #fff;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.magazine-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}

.magazine-hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: 10%;
    width: 200px;
    height: 200px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
}

.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.magazine-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.magazine-hero p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* Section Titles */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    position: relative;
    padding-left: 1rem;
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: var(--primary-color);
    border-radius: 2px;
}

.section-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

/* Feature Cards Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.card-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-color);
}

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

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.card-tag {
    background: var(--bg-color);
    color: var(--text-light);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.75rem;
}

/* Magazine Article Style */
.article-card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.article-image {
    height: 180px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.article-content {
    padding: 1.5rem;
}

.article-category {
    display: inline-block;
    background: var(--primary-color);
    color: #fff;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.75rem;
    margin-bottom: 0.75rem;
}

.article-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.article-excerpt {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-light);
    font-size: 0.8rem;
}

/* Two Column Layout */
.two-column {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.main-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.side-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Side Panel */
.side-panel {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.side-panel-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--primary-color);
}

.side-list {
    list-style: none;
}

.side-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.side-list li:last-child {
    border-bottom: none;
}

.side-list a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.side-list a:hover {
    color: var(--primary-color);
}

.side-list .icon {
    color: var(--primary-color);
}

/* Process Steps */
.process-timeline {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 15%;
    right: 15%;
    height: 3px;
    background: var(--border-color);
}

.process-step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin: 0 auto 1rem;
    position: relative;
    z-index: 1;
}

.step-title {
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.step-desc {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #1a252f 100%);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    color: #fff;
    margin-bottom: 2rem;
}

.cta-section h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.cta-section p {
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.btn {
    display: inline-block;
    padding: 0.9rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

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

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.5);
}

.btn-secondary:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.1);
}

/* Footer */
.footer {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-section h3 {
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.footer-section p, .footer-section a {
    color: var(--text-light);
    font-size: 0.9rem;
    text-decoration: none;
    display: block;
    margin: 0.5rem 0;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    margin-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.85rem;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 2000;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border: none;
    border-radius: 10px;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .two-column {
        grid-template-columns: 1fr;
    }

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

    .process-steps::before {
        display: none;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 1rem;
    }

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .magazine-hero {
        padding: 2rem;
    }

    .magazine-hero h1 {
        font-size: 1.8rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 1rem;
    }

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

    .process-steps {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in-left {
    animation: slideInLeft 0.6s ease forwards;
}

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

.pulse {
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}