/* ===================================
   Reset & Base Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #cbd5e1;
    --gray-lighter: #f1f5f9;
    --white: #ffffff;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-accent: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
    --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);

    /* Spacing */
    --container-width: 1200px;
    --section-padding: 120px;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 20px;
    color: var(--dark);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-menu a {
    color: var(--gray);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--gradient-primary);
    top: -200px;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--gradient-accent);
    bottom: -100px;
    right: -100px;
    animation-delay: 5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #14b8a6 0%, #06b6d4 100%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

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

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--gray-lighter);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--dark);
}

.hero-title {
    font-size: 72px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--dark);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--gray);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 16px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary {
    background: var(--white);
    color: var(--dark);
    border: 2px solid var(--gray-light);
}

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

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

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

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--gray);
    border-radius: 12px;
    position: relative;
}

.mouse::before {
    content: '';
    width: 4px;
    height: 8px;
    background: var(--gray);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { top: 8px; opacity: 1; }
    100% { top: 24px; opacity: 0; }
}

/* ===================================
   Section Styles
   =================================== */
.featured-section,
.categories-section,
.news-grid-section,
.newsletter-section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-header h2 {
    font-size: 48px;
    font-weight: 800;
    color: var(--dark);
}

/* ===================================
   Card Styles
   =================================== */
.card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.card-image {
    position: relative;
    width: 100%;
    padding-top: 60%;
    overflow: hidden;
    background: var(--gray-lighter);
}

.card-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.card-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
}

.card-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 12px;
}

.card-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--dark);
    line-height: 1.4;
}

.card-content p {
    color: var(--gray);
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}

.card-link {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    font-size: 15px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.card-link:hover {
    gap: 8px;
}

/* ===================================
   Featured Grid
   =================================== */
.featured-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.featured-main {
    grid-column: 1;
    grid-row: 1 / 4;
}

.featured-main .card-image {
    padding-top: 80%;
}

.featured-main .card-content {
    padding: 32px;
}

.featured-main h3 {
    font-size: 28px;
    margin-bottom: 16px;
}

.featured-main p {
    font-size: 16px;
}

.featured-secondary {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.card-horizontal {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 20px;
}

.card-horizontal .card-image {
    padding-top: 100%;
}

.card-horizontal .card-content {
    padding: 16px 16px 16px 0;
}

.card-horizontal h3 {
    font-size: 16px;
}

.card-horizontal p {
    font-size: 14px;
}

/* ===================================
   Categories Grid
   =================================== */
.categories-section {
    background: var(--gray-lighter);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.category-card {
    background: var(--white);
    padding: 40px 32px;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.category-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}

.category-card:hover .category-icon {
    transform: scale(1.1) rotate(5deg);
}

.category-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--dark);
}

.category-card p {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 16px;
}

.category-count {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gray-lighter);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray);
}

/* ===================================
   News Grid
   =================================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

/* ===================================
   Newsletter Section
   =================================== */
.newsletter-section {
    background: var(--gray-lighter);
}

.newsletter-card {
    background: var(--gradient-primary);
    padding: 64px;
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
}

.newsletter-content h2 {
    font-size: 36px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 12px;
}

.newsletter-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
}

.newsletter-form {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.newsletter-form input {
    padding: 16px 24px;
    border-radius: 12px;
    border: none;
    font-size: 15px;
    width: 300px;
    outline: none;
}

.newsletter-form .btn {
    white-space: nowrap;
    background: var(--dark);
}

.newsletter-form .btn:hover {
    background: var(--dark-light);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 80px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 20px;
    margin-bottom: 16px;
}

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

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--gray-light);
    text-decoration: none;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--white);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--gray-light);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .hero-title {
        font-size: 56px;
    }

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

    .featured-main {
        grid-row: 1;
    }

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

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

    .newsletter-card {
        flex-direction: column;
        text-align: center;
        padding: 48px;
    }

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

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
        pointer-events: none;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero-title {
        font-size: 40px;
    }

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

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

    .section-header h2 {
        font-size: 32px;
    }

    .card-horizontal {
        grid-template-columns: 1fr;
    }

    .card-horizontal .card-image {
        padding-top: 60%;
    }

    .card-horizontal .card-content {
        padding: 20px;
    }

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

    .news-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .newsletter-form {
        flex-direction: column;
        width: 100%;
    }

    .newsletter-form input {
        width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

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

    .section-header h2 {
        font-size: 28px;
    }

    .newsletter-card {
        padding: 32px 24px;
    }

    .newsletter-content h2 {
        font-size: 24px;
    }

    .newsletter-content p {
        font-size: 14px;
    }
}

/* ===================================
   Utilities
   =================================== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

/* Smooth Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-lighter);
}

::-webkit-scrollbar-thumb {
    background: var(--gray);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}