/* assets/css/style.css */
:root {
    --primary-blue: #0051c7;
    --secondary-blue: #e3f2fd;
    --background: #ffffff;
    --surface: #f8f9fa;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border: #dee2e6;
    --shadow: rgba(0, 0, 0, 0.05);
    --shadow-hover: rgba(0, 0, 0, 0.1);
    --critical: #dc3545;
    --high: #ffc107;
    --medium: #28a745;
}

[data-theme="dark"] {
    --primary-blue: #4a9eff;
    --secondary-blue: #1a2332;
    --background: #0a0e1a;
    --surface: #151922;
    --text-primary: #e9ecef;
    --text-secondary: #adb5bd;
    --border: #2d3748;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
}

.main-container {
    max-width: 1200px;
    margin: 1rem auto;
    padding: 0 1rem;
}

/* Header */
.header {
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.logo-icon { margin-right: 0.5rem; }

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    padding: 0.4rem 0.8rem;
    border-radius: 0.25rem;
    font-size: 0.85rem;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-primary);
    width: 32px;
    height: 32px;
    border-radius: 0.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Intro Section */
.intro-section {
    text-align: center;
    padding: 2rem 1rem;
    margin-bottom: 1.5rem;
}

.intro-section h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 1rem auto;
}

.last-updated {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Filters */
.filters {
    margin-bottom: 2rem;
}

#search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    background-color: var(--surface);
    color: var(--text-primary);
}

/* Main Content Grid */
#categories-container {
    width: 100%;
}

.category-section {
    margin-bottom: 3rem;
}

.category-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.article-card {
    background-color: var(--background);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    transition: all 0.2s ease-in-out;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    border-left: 4px solid var(--medium);
}

.article-card.critical { border-left-color: var(--critical); }
.article-card.high { border-left-color: var(--high); }

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px var(--shadow-hover);
}

.article-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.article-source {
    font-weight: 600;
}

.article-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.article-title a {
    color: var(--text-primary);
    text-decoration: none;
}
.article-title a:hover {
    color: var(--primary-blue);
}

.article-summary {
    font-size: 0.9rem;
    color: var(--text-secondary);
    flex-grow: 1;
    margin-bottom: 1rem;
}

/* Loader and Error */
.loader, .error-message {
    text-align: center;
    padding: 3rem;
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background-color: var(--surface);
    border-top: 1px solid var(--border);
    padding: 1.5rem;
    text-align: center;
    margin-top: 3rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.footer a {
    color: var(--primary-blue);
}