:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-soft: #eff6ff;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --success: #059669;
    --success-soft: #dcfce7;
    --warning: #f59e0b;
    --bg: #f4f7fb;
    --surface: #ffffff;
    --text: #0f172a;
    --text-muted: #64748b;
    --border: #dbe3ef;
    --shadow: 0 12px 30px rgba(15, 23, 42, 0.07);
}

* {
    box-sizing: border-box;
}

html {
    min-width: 320px;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

button,
input,
select {
    font: inherit;
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    color: inherit;
    text-decoration: none;
}

.brand-logo-mark {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: linear-gradient(135deg, #22c55e 0%, #2563eb 100%);
    display: grid;
    place-items: center;
    color: #ffffff;
    font-weight: 900;
    letter-spacing: 0;
    box-shadow: 0 14px 28px rgba(37, 99, 235, 0.22);
    flex: 0 0 auto;
}

.brand-logo-text {
    display: grid;
    gap: 2px;
    line-height: 1.1;
}

.brand-logo-name {
    font-size: 17px;
    font-weight: 850;
    letter-spacing: 0;
}

.brand-logo-subtitle {
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 650;
}

.btn {
    min-height: 40px;
    padding: 10px 16px;
    border: 1px solid transparent;
    border-radius: 8px;
    background: var(--primary);
    color: #ffffff;
    cursor: pointer;
    font-size: 14px;
    font-weight: 750;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    transform: none;
}

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

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

.btn-outline {
    background: #ffffff;
    border-color: var(--border);
    color: var(--text);
}

.btn-outline:hover {
    background: #f8fafc;
}

.card {
    max-width: 1200px;
    margin: 40px auto;
    padding: 30px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.header {
    padding: 18px 40px;
    background: #101828;
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.18);
}

.header h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 750;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-header {
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.card-header h3 {
    margin: 0;
    color: var(--text);
    font-size: 18px;
    font-weight: 750;
}

.stats-grid {
    max-width: 1200px;
    margin: 30px auto 0;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.stat-card {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 18px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text);
    font-size: 14px;
    font-weight: 650;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #ffffff;
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
}

.table-container {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 8px;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th,
td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

th {
    background: #f8fafc;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 750;
    text-transform: uppercase;
}

tr:last-child td {
    border-bottom: none;
}

.badge {
    padding: 6px 12px;
    border-radius: 999px;
    display: inline-block;
    font-size: 12px;
    font-weight: 750;
}

.badge-free {
    background: #f1f5f9;
    color: #475569;
}

.badge-basic {
    background: #dbeafe;
    color: #1e40af;
}

.badge-gold {
    background: #fef08a;
    color: #854d0e;
}

code {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #f8fafc;
    color: var(--danger);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 13px;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    padding: 20px;
    background: rgba(15, 23, 42, 0.62);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal {
    width: 100%;
    max-width: 420px;
    padding: 32px;
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 30px 80px rgba(15, 23, 42, 0.24);
    transform: translateY(16px) scale(0.97);
    transition: transform 0.18s ease;
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal h3 {
    margin: 0 0 24px;
    color: var(--text);
    font-size: 20px;
    font-weight: 800;
}

.modal-actions {
    margin-top: 28px;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

@media (max-width: 720px) {
    .header {
        padding: 16px 20px;
        align-items: flex-start;
        flex-direction: column;
    }

    .card {
        margin: 24px 16px;
        padding: 22px;
    }

    .card-header,
    .modal-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .btn,
    .modal-actions .btn {
        width: 100%;
    }
}