/* PROTEX CARİ ve ETİKET - Ana Stil */
:root {
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #1e293b;
    --border: #e2e8f0;
    --nav: #0f172a;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.main-header {
    background: var(--nav);
    color: white;
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.brand-logo { font-weight: 700; margin-right: 1rem; }
.app-title { opacity: 0.9; }

.main-nav {
    background: white;
    border-bottom: 1px solid var(--border);
    padding: 0 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.main-nav a {
    padding: 0.75rem 1rem;
    color: var(--text);
    font-weight: 500;
}
.main-nav a:hover, .main-nav a.active { background: #f1f5f9; color: var(--primary); }

.container { max-width: 1400px; margin: 0 auto; padding: 1.5rem; }

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.95rem;
    background: #e2e8f0;
    color: var(--text);
}
.btn-primary { background: var(--primary); color: white; }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.85rem; }
.btn-block { width: 100%; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    text-align: center;
    display: block;
    color: inherit;
}
.stat-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.08); text-decoration: none; }
.stat-value { font-size: 1.75rem; font-weight: 700; }
.stat-label { color: #64748b; font-size: 0.9rem; margin-top: 0.25rem; }
.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.success .stat-value { color: var(--success); }

.panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 0.75rem; text-align: left; border-bottom: 1px solid var(--border); }
.data-table th { background: #f8fafc; font-weight: 600; }
.table-responsive { overflow-x: auto; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.35rem; font-weight: 500; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.alert { padding: 0.75rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.alert-success { background: #dcfce7; color: #166534; }
.alert-error { background: #fee2e2; color: #991b1b; }

.login-page { background: #0f172a; display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-container { width: 100%; max-width: 400px; padding: 1rem; }
.login-card { background: white; padding: 2rem; border-radius: 12px; }
.login-card .brand { text-align: center; margin-bottom: 1.5rem; }
.login-card h1 { font-size: 1.4rem; margin: 0.5rem 0; }

@media (max-width: 768px) {
    .form-row { grid-template-columns: 1fr; }
    .main-nav { flex-direction: column; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}