:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg-app: #0f172a;
    --bg-card: #1e293b;
    --border: #334155;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

.glass-header {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 24px;
    margin: 16px 0;
    border: 1px solid var(--border);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.input {
    width: 100%;
    padding: 14px 16px;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-size: 15px;
    transition: all 0.3s;
}

.input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.btn {
    padding: 14px 24px;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.w-full {
    width: 100%;
}

.flex {
    display: flex;
}

.flex-col {
    display: flex;
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-2 {
    gap: 8px;
}

.gap-4 {
    gap: 16px;
}

.mb-2 {
    margin-bottom: 8px;
}

.mb-4 {
    margin-bottom: 16px;
}

.mt-2 {
    margin-top: 8px;
}

.mt-4 {
    margin-top: 16px;
}

.text-center {
    text-align: center;
}

.text-xs {
    font-size: 12px;
}

.text-sm {
    font-size: 14px;
}

.text-muted {
    color: var(--text-muted);
}

.text-primary {
    color: var(--primary);
}

.text-success {
    color: var(--success);
}

.text-danger {
    color: var(--danger);
}

.font-bold {
    font-weight: 700;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}

.badge-primary {
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary);
}

.badge-green {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge-red {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.badge-yellow {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.badge-blue {
    background: rgba(59, 130, 246, 0.2);
    color: #3b82f6;
}

.badge-gray {
    background: rgba(148, 163, 184, 0.2);
    color: #94a3b8;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.grid {
    display: grid;
    gap: 16px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Responsive Tasarım - Tüm Cihazlara Uyumlu */
@media (max-width: 768px) {
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 0 12px;
    }

    .card {
        padding: 16px;
        margin: 12px 0;
    }

    .glass-header {
        padding: 12px 0;
    }

    .btn {
        padding: 12px 20px;
        font-size: 14px;
    }

    .btn-sm {
        padding: 8px 14px;
        font-size: 12px;
    }

    table {
        font-size: 13px;
    }

    th, td {
        padding: 8px;
    }

    h1 {
        font-size: 22px;
    }

    h2 {
        font-size: 20px;
    }

    h3 {
        font-size: 18px;
    }
}

/* Küçük Ekranlar (Telefonlar) */
@media (max-width: 480px) {
    .flex {
        flex-wrap: wrap;
    }

    .justify-between {
        justify-content: center;
        gap: 10px;
    }

    .tab-nav {
        flex-wrap: nowrap;
        overflow-x: auto;
    }

    .tab-btn {
        padding: 10px 16px;
        font-size: 13px;
    }

    .stat-card {
        padding: 20px;
    }

    .stat-number {
        font-size: 28px;
    }
}

/* Büyük Ekranlar (Desktop) */
@media (min-width: 1280px) {
    .container {
        max-width: 1400px;
    }
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
}

.qr-container {
    background: white;
    padding: 20px;
    border-radius: 12px;
    display: inline-block;
}

.qr-container img {
    display: block;
}
        font-size: 12px;
    }

    table {
        font-size: 13px;
    }

    th, td {
        padding: 8px;
    }

    h1 {
        font-size: 22px;
    }

    h2 {
        font-size: 20px;
    }

    h3 {
        font-size: 18px;
    }
}

/* Küçük Ekranlar (Telefonlar) */
@media (max-width: 480px) {
    .flex {
        flex-wrap: wrap;
    }

    .justify-between {
        justify-content: center;
        gap: 10px;
    }

    .tab-nav {
        flex-wrap: nowrap;
        overflow-x: auto;
    }

    .tab-btn {
        padding: 10px 16px;
        font-size: 13px;
    }

    .stat-card {
        padding: 20px;
    }

    .stat-number {
        font-size: 28px;
    }
}

/* Büyük Ekranlar (Desktop) */
@media (min-width: 1280px) {
    .container {
        max-width: 1400px;
    }
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
}

.qr-container {
    background: white;
    padding: 20px;
    border-radius: 12px;
    display: inline-block;
}

.qr-container img {
    display: block;
}