/* =============================================================
   vzhled.css — Sdílené styly pro soukr.cz
   Zahrnuje: layout, header, navigace, základní utility
   ============================================================= */

/* Reset & base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

/* Hlavní obal stránky */
.container {
    width: 95%;
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

/* Header */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

.header h1 {
    font-size: 2em;
    margin-bottom: 10px;
}

.header p {
    opacity: 0.85;
    font-size: 14px;
}

.user-info {
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 15px;
    border-radius: 8px;
    margin-top: 15px;
    font-size: 0.95em;
}

/* Navigace */
.nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 15px;
    background: #f5f5f5;
    border-bottom: 2px solid #e0e0e0;
}

.nav a {
    padding: 10px 20px;
    background: white;
    text-decoration: none;
    color: #333;
    border-radius: 8px;
    transition: all 0.3s;
    font-weight: 500;
}

.nav a:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

.nav a.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.logout-btn {
    margin-left: auto;
    background: #dc3545 !important;
    color: white !important;
}

.logout-btn:hover {
    background: #c82333 !important;
}

/* Badge (např. počet pozvánek) */
.nav .badge {
    display: inline-block;
    background: #e74c3c;
    color: white;
    border-radius: 10px;
    padding: 1px 6px;
    font-size: 11px;
    margin-left: 4px;
    font-weight: 600;
}

/* Obsah stránky */
.content {
    padding: 30px;
}

/* Hlášky success / error */
.success {
    background: #d4edda;
    color: #155724;
    padding: 12px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 4px solid #28a745;
}

.error {
    background: #f8d7da;
    color: #721c24;
    padding: 12px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 4px solid #dc3545;
}

.warning {
    background: #fff3cd;
    color: #856404;
    padding: 12px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 4px solid #ffc107;
}