:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #10b981;
    --dark: #0f172a;
    --darker: #020617;
    --card: #1e293b;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    --danger: #ef4444;
    --warning: #f59e0b;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--dark);
    color: var(--text);
    line-height: 1.6;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Navbar */
.navbar {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    position: fixed; top: 0; width: 100%; z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.navbar .container {
    display: flex; justify-content: space-between; align-items: center;
    height: 70px;
}

.logo {
    display: flex; align-items: center; gap: 10px;
    color: var(--text); text-decoration: none; font-size: 24px; font-weight: 700;
}

.logo i { color: var(--primary); font-size: 28px; }

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

.nav-links a {
    color: var(--text-muted); text-decoration: none; font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover { color: var(--text); }

.btn-login {
    padding: 8px 20px; border: 1px solid var(--primary); border-radius: 8px;
    color: var(--primary) !important;
}

.btn-register {
    padding: 8px 20px; background: var(--primary); border-radius: 8px;
    color: white !important;
}

/* Hero */
.hero {
    padding: 150px 0 100px;
    background: linear-gradient(135deg, var(--darker) 0%, var(--dark) 100%);
    text-align: center;
}

.hero-content h1 {
    font-size: 56px; font-weight: 800; margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 20px; color: var(--text-muted); max-width: 700px;
    margin: 0 auto 40px;
}

.hero-buttons { display: flex; gap: 20px; justify-content: center; }

.btn-primary {
    padding: 14px 32px; background: var(--primary); color: white;
    text-decoration: none; border-radius: 10px; font-weight: 600;
    transition: all 0.3s;
}

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

.btn-secondary {
    padding: 14px 32px; border: 1px solid var(--border); color: var(--text);
    text-decoration: none; border-radius: 10px; font-weight: 600;
    transition: all 0.3s;
}

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

/* Hero Stats */
.hero-stats {
    display: flex; justify-content: center; gap: 60px;
    margin-top: 80px;
}

.stat { text-align: center; }

.stat i {
    font-size: 40px; color: var(--primary); margin-bottom: 15px;
}

.stat h3 { font-size: 36px; font-weight: 700; }

.stat p { color: var(--text-muted); }

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

.features h2 {
    text-align: center; font-size: 42px; margin-bottom: 60px;
}

.features-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px;
}

.feature-card {
    background: var(--card); padding: 40px; border-radius: 15px;
    border: 1px solid var(--border); transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px); border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.1);
}

.feature-card i {
    font-size: 40px; color: var(--primary); margin-bottom: 20px;
}

.feature-card h3 { font-size: 22px; margin-bottom: 15px; }

.feature-card p { color: var(--text-muted); }

/* Pricing */
.pricing { padding: 100px 0; background: var(--darker); }

.pricing h2 {
    text-align: center; font-size: 42px; margin-bottom: 20px;
}

.pricing > .container > p {
    text-align: center; color: var(--text-muted); margin-bottom: 60px;
}

.pricing-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px;
}

.pricing-card {
    background: var(--card); padding: 40px; border-radius: 15px;
    border: 1px solid var(--border); position: relative; transition: all 0.3s;
}

.pricing-card:hover { transform: translateY(-5px); border-color: var(--primary); }

.pricing-card.popular { border-color: var(--primary); transform: scale(1.05); }

.popular-badge {
    position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
    background: var(--primary); padding: 5px 20px; border-radius: 20px;
    font-size: 12px; font-weight: 600;
}

.pricing-card h3 { font-size: 24px; margin-bottom: 10px; }

.plan-desc { color: var(--text-muted); font-size: 14px; margin-bottom: 30px; }

.price { margin-bottom: 30px; }

.price .currency { font-size: 20px; color: var(--text-muted); }

.price .amount { font-size: 48px; font-weight: 800; }

.price .period { color: var(--text-muted); }

.features-list { list-style: none; margin-bottom: 30px; }

.features-list li {
    padding: 10px 0; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: 10px;
}

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

.features-list i { color: var(--secondary); }

.btn-plan {
    display: block; text-align: center; padding: 14px;
    background: var(--primary); color: white; text-decoration: none;
    border-radius: 10px; font-weight: 600; transition: all 0.3s;
}

.btn-plan:hover { background: var(--primary-dark); }

/* Footer */
.footer {
    background: var(--darker); padding: 80px 0 30px;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 60px;
    margin-bottom: 60px;
}

.footer-brand h3 { font-size: 24px; margin-bottom: 20px; }

.footer-brand p { color: var(--text-muted); }

.footer-links h4 { font-size: 18px; margin-bottom: 20px; }

.footer-links a {
    display: block; color: var(--text-muted); text-decoration: none;
    padding: 8px 0; transition: color 0.3s;
}

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

.footer-contact p { color: var(--text-muted); margin-bottom: 10px; }

.footer-contact i { color: var(--primary); margin-right: 10px; }

.footer-bottom {
    text-align: center; padding-top: 30px;
    border-top: 1px solid var(--border); color: var(--text-muted);
}

/* Auth Pages */
.auth-container {
    max-width: 420px; margin: 120px auto 60px;
    background: var(--card); padding: 50px;
    border-radius: 20px; border: 1px solid var(--border);
}

.auth-container h2 {
    text-align: center; font-size: 32px; margin-bottom: 10px;
}

.auth-container > p {
    text-align: center; color: var(--text-muted); margin-bottom: 40px;
}

.form-group { margin-bottom: 25px; }

.form-group label {
    display: block; margin-bottom: 8px; font-weight: 500;
}

.form-group input {
    width: 100%; padding: 14px; background: var(--dark);
    border: 1px solid var(--border); border-radius: 10px;
    color: var(--text); font-size: 16px; transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none; border-color: var(--primary);
}

.btn-auth {
    width: 100%; padding: 16px; background: var(--primary);
    color: white; border: none; border-radius: 10px;
    font-size: 16px; font-weight: 600; cursor: pointer;
    transition: all 0.3s;
}

.btn-auth:hover { background: var(--primary-dark); }

.auth-links {
    text-align: center; margin-top: 25px;
    color: var(--text-muted);
}

.auth-links a { color: var(--primary); text-decoration: none; }

/* Dashboard */
.dashboard-layout {
    display: grid; grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: var(--card); border-right: 1px solid var(--border);
    padding: 30px 0; position: fixed; width: 260px; height: 100vh;
}

.sidebar-brand {
    padding: 0 30px 30px; border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
}

.sidebar-brand h3 { font-size: 22px; }

.sidebar-brand h3 i { color: var(--primary); margin-right: 10px; }

.sidebar-menu a {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 30px; color: var(--text-muted);
    text-decoration: none; transition: all 0.3s;
}

.sidebar-menu a:hover, .sidebar-menu a.active {
    background: rgba(59, 130, 246, 0.1); color: var(--primary);
    border-right: 3px solid var(--primary);
}

.sidebar-menu i { width: 20px; }

.main-content {
    margin-left: 260px; padding: 30px;
}

.header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 40px;
}

.header h1 { font-size: 32px; }

.user-menu {
    display: flex; align-items: center; gap: 20px;
}

.user-menu a { color: var(--text-muted); text-decoration: none; }

.user-menu a:hover { color: var(--danger); }

/* Stats Cards */
.stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--card); padding: 30px; border-radius: 15px;
    border: 1px solid var(--border);
}

.stat-card h4 { color: var(--text-muted); font-size: 14px; margin-bottom: 15px; }

.stat-card .value { font-size: 36px; font-weight: 700; }

.stat-card .change {
    font-size: 14px; margin-top: 10px;
}

.change.up { color: var(--secondary); }
.change.down { color: var(--danger); }

/* Content Cards */
.content-card {
    background: var(--card); padding: 30px; border-radius: 15px;
    border: 1px solid var(--border); margin-bottom: 30px;
}

.content-card h3 { font-size: 20px; margin-bottom: 25px; }

/* Tables */
.data-table {
    width: 100%; border-collapse: collapse;
}

.data-table th {
    text-align: left; padding: 15px; color: var(--text-muted);
    font-weight: 600; border-bottom: 1px solid var(--border);
}

.data-table td {
    padding: 15px; border-bottom: 1px solid var(--border);
}

.data-table tr:hover { background: rgba(59, 130, 246, 0.05); }

.status {
    padding: 5px 15px; border-radius: 20px; font-size: 12px; font-weight: 600;
}

.status.active { background: rgba(16, 185, 129, 0.2); color: var(--secondary); }
.status.pending { background: rgba(245, 158, 11, 0.2); color: var(--warning); }
.status.suspended { background: rgba(239, 68, 68, 0.2); color: var(--danger); }

/* Buttons */
.btn {
    padding: 10px 20px; border-radius: 8px; font-weight: 600;
    cursor: pointer; border: none; text-decoration: none; display: inline-block;
}

.btn-sm { padding: 6px 14px; font-size: 14px; }

.btn-primary { background: var(--primary); color: white; }
.btn-success { background: var(--secondary); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-warning { background: var(--warning); color: var(--dark); }

/* Alerts */
.alert {
    padding: 16px 20px; border-radius: 10px; margin-bottom: 25px;
}

.alert-success { background: rgba(16, 185, 129, 0.2); color: var(--secondary); border: 1px solid var(--secondary); }
.alert-error { background: rgba(239, 68, 68, 0.2); color: var(--danger); border: 1px solid var(--danger); }
.alert-info { background: rgba(59, 130, 246, 0.2); color: var(--primary); border: 1px solid var(--primary); }

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

@media (max-width: 768px) {
    .hero-content h1 { font-size: 36px; }
    .hero-stats { flex-direction: column; gap: 30px; }
    .features-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .pricing-card.popular { transform: none; }
    .stats-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .dashboard-layout { grid-template-columns: 1fr; }
    .sidebar { display: none; }
    .main-content { margin-left: 0; }
    .nav-links { display: none; }
}