/* Kurumsal Renk Değişkenleri - Buradan Tek Noktadan Yönetilir */
:root {
    --primary-color: #1e293b;    /* Koyu Lacivert (Ağır Ton) */
    --secondary-color: #64748b;  /* Çelik Gri */
    --accent-color: #3b82f6;     /* Kurumsal Mavi */
    --success-color: #10b981;    /* Zümrüt Yeşili */
    --warning-color: #f59e0b;    /* Kehribar (İade/Uyarı) */
    --danger-color: #ef4444;     /* Kırmızı */
    --bg-color: #f8fafc;         /* Ferah Arka Plan */
    --card-bg: #ffffff;
    --text-main: #334155;
    --text-muted: #94a3b8;
    --radius: 1rem;              /* Yumuşak Köşeler */
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* %10 - %80 - %10 Düzeni İçin Özel Container */
.app-container {
    padding-top: 2rem;
    padding-bottom: 4rem;
}

/* Kurumsal Kart Yapısı */
.btn-card {
    border: none;
    border-radius: var(--radius);
    padding: 3rem 1.5rem;
    color: #fff !important;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.btn-card:hover {
    transform: translateY(-8px);
    filter: brightness(1.1);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.btn-card i { font-size: 3rem; margin-bottom: 1.5rem; opacity: 0.9; }
.btn-card h3 { font-weight: 800; font-size: 1.5rem; margin-bottom: 0.5rem; }

/* Renk Grupları */
.bg-primary-grad { background: linear-gradient(135deg, var(--primary-color) 0%, #334155 100%); }
.bg-success-grad { background: linear-gradient(135deg, #059669 0%, var(--success-color) 100%); }
.bg-warning-grad { background: linear-gradient(135deg, #d97706 0%, var(--warning-color) 100%); }
.bg-accent-grad  { background: linear-gradient(135deg, #2563eb 0%, var(--accent-color) 100%); }

/* İstatistik Kartları */
.stat-box {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: var(--shadow);
}

/* iOS Style Lock Switch */
.ios-lock-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
}

.ios-switch {
    position: relative;
    display: inline-block;
    width: 200px;
    height: 60px;
}

.ios-switch input { opacity: 0; width: 0; height: 0; }

.ios-slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #e2e8f0;
    transition: .4s;
    border-radius: 60px;
    border: 2px solid #cbd5e1;
}

.ios-slider:before {
    position: absolute;
    content: "\f054"; /* FontAwesome Arrow */
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    height: 50px; width: 50px;
    left: 4px; bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

input:checked + .ios-slider { background-color: var(--success-color); border-color: #059669; }
input:checked + .ios-slider:before { transform: translateX(138px); content: "\f00c"; }

.lock-label {
    margin-top: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.85rem;
}