:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --accent-primary: #e94560;
    --accent-success: #06d6a0;
    --accent-warning: #f4a261;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --text-muted: #6b6b6b;
    --border-color: #2a2a3e;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 16px rgba(0,0,0,0.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background: var(--bg-primary); color: var(--text-primary); line-height: 1.6; }
a { color: var(--accent-primary); text-decoration: none; }
a:hover { color: var(--accent-success); }

/* Navbar */
.navbar { background: rgba(15,15,26,0.95); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; }
.nav-container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; display: flex; align-items: center; justify-content: space-between; height: 70px; }
.nav-logo { font-size: 1.4rem; font-weight: 700; color: var(--text-primary); display: flex; align-items: center; gap: 0.5rem; }
.logo-accent { color: var(--accent-primary); }
.nav-menu { display: flex; list-style: none; gap: 2rem; }
.nav-menu a { color: var(--text-secondary); font-weight: 500; }
.nav-menu a:hover { color: var(--accent-primary); }
.nav-actions { display: flex; align-items: center; gap: 1rem; }
.search-form { display: flex; background: var(--bg-tertiary); border: 1px solid var(--border-color); border-radius: var(--radius-sm); }
.search-form input { background: transparent; border: none; color: var(--text-primary); padding: 0.5rem 1rem; outline: none; }
.search-form button { background: transparent; border: none; color: var(--text-secondary); padding: 0.5rem; cursor: pointer; }

/* Hero */
.hero { text-align: center; padding: 4rem 2rem; background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%); border-radius: var(--radius); margin: 2rem auto; max-width: 1280px; }
.hero-title { font-size: 3rem; margin-bottom: 1rem; }
.hero-title span { color: var(--accent-primary); }
.hero-subtitle { color: var(--text-secondary); margin-bottom: 2rem; max-width: 600px; margin-left: auto; margin-right: auto; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.75rem 1.5rem; border-radius: var(--radius-sm); font-weight: 600; cursor: pointer; border: 2px solid transparent; transition: all 0.3s; text-decoration: none; }
.btn-primary { background: var(--accent-primary); color: white; border-color: var(--accent-primary); }
.btn-primary:hover { background: #d13a52; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-outline { border-color: var(--border-color); color: var(--text-secondary); background: transparent; }
.btn-outline:hover { border-color: var(--accent-primary); color: var(--accent-primary); }

/* Categories */
.categories-section { max-width: 1280px; margin: 0 auto; padding: 0 2rem; }
.section-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 1.5rem; }
.categories-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; margin-bottom: 3rem; }
.category-card { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 2rem; text-align: center; transition: all 0.3s; }
.category-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--accent-primary); }
.category-title { color: var(--text-primary); font-size: 1.3rem; }

/* Articles */
.articles-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; max-width: 1280px; margin: 0 auto; padding: 0 2rem; }
.article-card { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 1.5rem; transition: all 0.3s; }
.article-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.article-title { color: var(--text-primary); font-weight: 600; font-size: 1.1rem; display: block; margin-bottom: 0.5rem; }
.article-title:hover { color: var(--accent-primary); }
.article-excerpt { color: var(--text-secondary); font-size: 0.9rem; }

/* Alerts */
.alert { max-width: 1280px; margin: 1rem auto; padding: 1rem 1.5rem; border-radius: var(--radius-sm); font-weight: 500; }
.alert-success { background: rgba(6,214,160,0.1); border: 1px solid var(--accent-success); color: var(--accent-success); }
.alert-error { background: rgba(233,69,96,0.1); border: 1px solid var(--accent-primary); color: var(--accent-primary); }

/* Auth */
.auth-container { max-width: 450px; margin: 3rem auto; background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 2.5rem; }
.auth-container h1 { text-align: center; margin-bottom: 1.5rem; }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; font-size: 0.9rem; }
.form-input { width: 100%; padding: 0.8rem 1rem; background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: var(--radius-sm); color: var(--text-primary); font-family: inherit; font-size: 1rem; }
.form-input:focus { outline: none; border-color: var(--accent-primary); }
.form-btn { width: 100%; justify-content: center; }

/* Footer */
.footer { background: var(--bg-secondary); border-top: 1px solid var(--border-color); padding: 3rem 2rem; margin-top: 4rem; }
.footer-container { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 3rem; }
.footer-section h3, .footer-section h4 { margin-bottom: 1rem; }
.footer-section ul { list-style: none; }
.footer-section li { margin-bottom: 0.5rem; }
.footer-section a { color: var(--text-secondary); }
.footer-bottom { max-width: 1280px; margin: 2rem auto 0; padding-top: 2rem; border-top: 1px solid var(--border-color); text-align: center; color: var(--text-muted); font-size: 0.85rem; }

/* Main content */
.main-content { max-width: 1280px; margin: 0 auto; padding: 2rem; min-height: calc(100vh - 70px - 300px); }

@media (max-width: 768px) {
    .nav-menu { display: none; }
    .hero-title { font-size: 2rem; }
    .categories-grid, .articles-grid { grid-template-columns: 1fr; }
    .footer-container { grid-template-columns: 1fr; }
}