/* ============================================
   Premium Shortlink - Main Stylesheet
   Modern Design inspired by Short.io
   ============================================ */

:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --radius: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: #fff;
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu a {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-nav-login {
    color: var(--primary) !important;
}

.btn-nav-signup {
    background: var(--gradient) !important;
    color: white !important;
    padding: 0.6rem 1.5rem !important;
    border-radius: var(--radius);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-700);
    cursor: pointer;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(180deg, var(--gray-50) 0%, white 100%);
    margin-top: 70px;
}

.hero-content {
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--gray-700);
    margin-bottom: 2rem;
}

.hero-badge i {
    color: var(--warning);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--gray-900);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.hero-visual {
    position: relative;
    margin-top: 4rem;
}

.dashboard-preview {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.preview-header {
    background: var(--gray-50);
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.preview-dots {
    display: flex;
    gap: 6px;
}

.preview-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gray-300);
}

.preview-url {
    background: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.875rem;
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
}

.preview-body {
    padding: 1.5rem;
}

.preview-table {
    margin-bottom: 1.5rem;
}

.table-row {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid var(--gray-100);
    align-items: center;
}

.row-date {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.row-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 500;
}

.row-stats {
    display: flex;
    gap: 8px;
}

.badge {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-clicks {
    background: var(--gray-100);
    color: var(--gray-700);
}

.badge-growth {
    background: #d1fae5;
    color: #047857;
}

.preview-chart {
    margin: 2rem 0;
    height: 200px;
}

.preview-geo {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.geo-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: 8px;
}

.geo-flag {
    font-size: 1.5rem;
}

.geo-name {
    flex: 1;
    font-weight: 500;
}

.geo-count {
    color: var(--gray-600);
    font-weight: 600;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

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

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

.btn-secondary {
    background: white;
    color: var(--primary);
    border: 2px solid var(--gray-200);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

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

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

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
}

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

.feature-card {
    padding: 2rem;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--gray-900);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing {
    padding: 100px 0;
    background: var(--gray-50);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    position: relative;
    transition: var(--transition);
}

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

.pricing-popular {
    border-color: var(--primary);
    border-width: 3px;
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: white;
    padding: 6px 20px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: 0.5rem;
}

.currency {
    font-size: 1.5rem;
    color: var(--gray-600);
}

.amount {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.period {
    color: var(--gray-600);
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.pricing-features i.fa-check {
    color: var(--success);
}

.pricing-features i.fa-times {
    color: var(--gray-300);
}

/* ============================================
   API Section
   ============================================ */
.api-section {
    padding: 100px 0;
    background: var(--dark);
    color: white;
}

.api-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: center;
}

.api-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.api-info p {
    font-size: 1.125rem;
    color: var(--gray-300);
    margin-bottom: 2rem;
}

.api-features {
    list-style: none;
    margin-bottom: 2rem;
}

.api-features li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--gray-300);
}

.api-features i {
    color: var(--success);
}

.api-code {
    background: #0d1117;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.code-header {
    background: #161b22;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #30363d;
}

.code-tabs {
    display: flex;
    gap: 1rem;
}

.code-tabs button {
    background: none;
    border: none;
    color: var(--gray-400);
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition);
}

.code-tabs button.active,
.code-tabs button:hover {
    background: #30363d;
    color: white;
}

.code-block {
    display: none;
    padding: 1.5rem;
    overflow-x: auto;
}

.code-block.active {
    display: block;
}

.code-block code {
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.7;
    color: #c9d1d9;
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
    padding: 100px 0;
    text-align: center;
    background: var(--gradient);
    color: white;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.footer-col h4 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

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

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition);
}

.footer-col a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--gray-800);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    color: white;
}

/* ============================================
   Auth Pages (Login/Register)
   ============================================ */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    padding: 2rem;
}

.auth-box {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 450px;
    padding: 3rem;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

.auth-header p {
    color: var(--gray-600);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--gray-700);
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}

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

.alert {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
}

.alert-success {
    background: #d1fae5;
    border: 1px solid #10b981;
    color: #047857;
}

.alert-error {
    background: #fee2e2;
    border: 1px solid #ef4444;
    color: #dc2626;
}

.auth-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
    color: var(--gray-600);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

/* ============================================
   Dashboard
   ============================================ */
.dashboard {
    min-height: 100vh;
    background: var(--gray-50);
}

.dashboard-header {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 1.5rem 0;
}

.dashboard-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dashboard-title {
    font-size: 1.5rem;
    color: var(--gray-900);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.dashboard-main {
    padding: 2rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
}

.stat-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.stat-card-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.stat-card-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
}

.stat-card-label {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.card {
    background: white;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table thead {
    background: var(--gray-50);
}

.table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 2px solid var(--gray-200);
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-100);
}

.table tr:hover {
    background: var(--gray-50);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .api-content {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .features-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
    }
}