/* ========================================
   GiveawayHub - Main Stylesheet
   ======================================== */

/* CSS Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --success-color: #48bb78;
    --warning-color: #ed8936;
    --error-color: #f56565;
    --text-dark: #1a202c;
    --text-medium: #4a5568;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

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

/* ========================================
   Navigation Bar
   ======================================== */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.logo-icon {
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: var(--text-medium);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(102, 126, 234, 0.1);
}

/* ========================================
   Hero Sections
   ======================================== */
.hero {
    padding: 140px 20px 80px;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

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

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

.btn-success {
    background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
    color: white;
}

.btn-lg {
    padding: 18px 36px;
    font-size: 1.1rem;
}

/* ========================================
   Cards & Containers
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.section {
    padding: 80px 0;
}

/* ========================================
   Forms
   ======================================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 14px 18px;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-white);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 60px 0 0;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: white;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-section a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
    transition: all var(--transition-fast);
}

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

.footer-bottom {
    margin-top: 40px;
    padding: 20px;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Giveaway Specific Styles
   ======================================== */
.giveaway-hero {
    padding: 150px 20px 80px;
}

.giveaway-hero h1 {
    font-size: 2.5rem;
}

.countdown-container {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.countdown-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    padding: 20px 30px;
    min-width: 100px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.countdown-value {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
}

.countdown-label {
    font-size: 0.875rem;
    text-transform: uppercase;
    opacity: 0.8;
}

.prize-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    margin: 0 auto;
}

.prize-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
}

.prize-content {
    padding: 30px;
}

.prize-title {
    font-size: 1.75rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.prize-description {
    color: var(--text-medium);
    margin-bottom: 25px;
}

.rules-box {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    padding: 25px;
    margin-top: 30px;
    border-left: 4px solid var(--success-color);
}

.rules-title {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

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

.rules-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    color: var(--text-medium);
}

.icon-check,
.icon-cross {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    flex-shrink: 0;
}

.icon-check {
    background: rgba(72, 187, 120, 0.2);
    color: var(--success-color);
}

.icon-cross {
    background: rgba(245, 101, 101, 0.2);
    color: var(--error-color);
}

.participation-form {
    padding: 30px;
}

.success-message {
    background: linear-gradient(135deg, rgba(72, 187, 120, 0.1) 0%, rgba(56, 161, 105, 0.1) 100%);
    border: 2px solid var(--success-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 15px;
}

.success-title {
    font-size: 1.5rem;
    color: var(--success-color);
    margin-bottom: 10px;
}

/* ========================================
   Page Content Styles
   ======================================== */
.page-content {
    padding: 120px 20px 60px;
    max-width: 900px;
    margin: 0 auto;
}

.page-content h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.page-content p {
    color: var(--text-medium);
    margin-bottom: 20px;
    line-height: 1.8;
}

/* About Page */
.about-hero {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 100px 20px;
    text-align: center;
    color: white;
}

.about-hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.about-hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
    opacity: 0.9;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 60px 20px;
}

.about-section {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-md);
}

.about-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-dark);
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: var(--radius-lg);
    color: white;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    display: block;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* Contact Page */
.contact-hero {
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    padding: 100px 20px;
    text-align: center;
    color: white;
}

.contact-hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.contact-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.contact-info h2 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: var(--text-dark);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-details h4 {
    color: var(--text-dark);
    margin-bottom: 5px;
}

.contact-details p {
    color: var(--text-medium);
    font-size: 0.95rem;
}

.contact-form-container {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.contact-form-container h2 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: var(--text-dark);
}

/* Terms & Privacy Pages */
.legal-hero {
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 100%);
    padding: 100px 20px;
    text-align: center;
    color: white;
}

.legal-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.legal-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 20px;
}

.legal-section {
    margin-bottom: 40px;
}

.legal-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-dark);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

.legal-section p,
.legal-section li {
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 15px;
}

.legal-section ul {
    padding-left: 25px;
}

.last-updated {
    color: var(--text-light);
    font-style: italic;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

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

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

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

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

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

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .countdown-container {
        gap: 10px;
    }
    
    .countdown-item {
        padding: 15px 20px;
        min-width: 70px;
    }
    
    .countdown-value {
        font-size: 1.8rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .about-hero h1,
    .contact-hero h1,
    .legal-hero h1 {
        font-size: 2rem;
    }
    
    .about-section,
    .contact-info,
    .contact-form-container {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .btn {
        padding: 12px 24px;
    }
    
    .btn-lg {
        padding: 14px 28px;
    }
    
    .prize-content {
        padding: 20px;
    }
}

/* ========================================
   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;
}

:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    z-index: 1001;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --text-medium: #333;
        --text-light: #555;
        --border-color: #000;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}