:root {
    --primary: #1a365d;
    --primary-light: #2a4a7f;
    --accent: #2b6cb0;
    --success: #276749;
    --warning: #c05621;
    --danger: #c53030;
    --bg: #f7fafc;
    --card-bg: #ffffff;
    --text: #2d3748;
    --text-muted: #718096;
    --border: #e2e8f0;
}

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

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* Navbar */
.navbar {
    background: var(--primary);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.navbar .brand { color: white; font-size: 1.25rem; font-weight: 700; text-decoration: none; }
.nav-links a { color: rgba(255,255,255,0.85); text-decoration: none; margin-left: 1.5rem; font-size: 0.9rem; }
.nav-links a:hover { color: white; }

/* Main */
main { padding: 2rem 0; min-height: calc(100vh - 160px); }

/* Hero */
.hero { text-align: center; padding: 3rem 0; border-bottom: 1px solid var(--border); margin-bottom: 2rem; }
.hero h1 { font-size: 2.5rem; color: var(--primary); }
.hero p { font-size: 1.2rem; color: var(--text-muted); margin-top: 0.5rem; }

/* Info Grid */
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; margin: 2rem 0; }
.info-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
}
.info-card h3 { color: var(--primary); margin-bottom: 0.75rem; }

/* Buttons */
.btn {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.9rem;
    cursor: pointer;
    margin-top: 0.5rem;
}
.btn:hover { background: var(--primary-light); }
.btn-sm { font-size: 0.8rem; padding: 0.3rem 0.7rem; border-radius: 4px; text-decoration: none; background: var(--accent); color: white; display: inline-block; }
.btn-sm:hover { background: var(--primary-light); }
.btn-approve { background: var(--success); }
.btn-deny { background: var(--danger); }

/* Forms */
.form { max-width: 500px; margin: 1rem 0; }
.form-inline { display: flex; gap: 1rem; align-items: end; max-width: none; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.3rem; font-size: 0.9rem; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
}

/* Tables */
.data-table { width: 100%; border-collapse: collapse; margin: 1rem 0; }
.data-table th { background: var(--primary); color: white; padding: 0.75rem; text-align: left; font-size: 0.85rem; }
.data-table td { padding: 0.75rem; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.data-table tr:hover { background: #edf2f7; }

/* Status */
.status-ok { color: var(--success); font-weight: 600; }
.status-warn { color: var(--warning); font-weight: 600; }
.status-error { color: var(--danger); font-weight: 600; }

/* Alerts */
.alert { padding: 0.75rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.alert-error { background: #fed7d7; color: var(--danger); border: 1px solid #feb2b2; }
.alert-success { background: #c6f6d5; color: var(--success); border: 1px solid #9ae6b4; }

/* Document viewer */
.document-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; margin-bottom: 1rem; }
.document-actions { display: flex; gap: 0.5rem; }
.document-content { background: var(--card-bg); border: 1px solid var(--border); border-radius: 8px; padding: 2rem; }
.document-content h1, .document-content h2, .document-content h3 { color: var(--primary); margin: 1.5rem 0 0.75rem; }
.document-content table { border-collapse: collapse; width: 100%; margin: 1rem 0; }
.document-content th, .document-content td { border: 1px solid var(--border); padding: 0.5rem; }
.document-content code { background: #edf2f7; padding: 0.15rem 0.4rem; border-radius: 3px; font-size: 0.9em; }
.document-content pre { background: #2d3748; color: #e2e8f0; padding: 1rem; border-radius: 6px; overflow-x: auto; }

/* Big number for dashboard */
.big-number { font-size: 2.5rem; font-weight: 700; color: var(--primary); }

/* Footer */
.footer { background: var(--primary); color: rgba(255,255,255,0.7); padding: 1.5rem 0; text-align: center; font-size: 0.85rem; }
.footer a { color: rgba(255,255,255,0.9); }