/* =====================================================
   Common styles shared across all layouts
   ===================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary:       #4F46E5;
    --primary-dark:  #4338CA;
    --primary-light: #EEF2FF;
    --success:       #10B981;
    --danger:        #EF4444;
    --warning:       #F59E0B;
    --info:          #3B82F6;
    --gray-50:       #F9FAFB;
    --gray-100:      #F3F4F6;
    --gray-200:      #E5E7EB;
    --gray-300:      #D1D5DB;
    --gray-400:      #9CA3AF;
    --gray-500:      #6B7280;
    --gray-600:      #4B5563;
    --gray-700:      #374151;
    --gray-800:      #1F2937;
    --gray-900:      #111827;
    --radius:        8px;
    --shadow:        0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md:     0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
    --shadow-lg:     0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05);
    --font:          -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--gray-800); background: var(--gray-50); line-height: 1.5; }

/* ── Buttons ── */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 9px 18px; border-radius: var(--radius);
    font-size: 14px; font-weight: 600; cursor: pointer;
    border: 1px solid transparent; text-decoration: none;
    transition: all .15s; white-space: nowrap;
}
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-lg { padding: 12px 24px; font-size: 16px; }
.btn-full { width: 100%; justify-content: center; }

.btn-primary   { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-secondary { background: #fff; color: var(--gray-700); border-color: var(--gray-300); }
.btn-secondary:hover { background: var(--gray-50); }
.btn-danger    { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #DC2626; }
.btn-success   { background: var(--success); color: #fff; border-color: var(--success); }
.btn-ghost     { background: transparent; color: var(--primary); border-color: transparent; }
.btn-ghost:hover { background: var(--primary-light); }

/* ── Alerts ── */
.alert {
    padding: 12px 16px; border-radius: var(--radius);
    font-size: 14px; margin-bottom: 16px;
    display: flex; align-items: flex-start; gap: 10px;
}
.alert-success { background: #F0FDF4; color: #15803D; border: 1px solid #BBF7D0; }
.alert-error   { background: #FEF2F2; color: #B91C1C; border: 1px solid #FECACA; }
.alert-warning { background: #FFFBEB; color: #92400E; border: 1px solid #FDE68A; }
.alert-info    { background: #EFF6FF; color: #1D4ED8; border: 1px solid #BFDBFE; }

/* ── Forms ── */
.form-group { margin-bottom: 18px; }
.form-group label {
    display: flex; justify-content: space-between; align-items: center;
    font-size: 13px; font-weight: 600; color: var(--gray-700); margin-bottom: 6px;
}
.label-hint { font-weight: 400; color: var(--gray-400); }
.label-link { font-weight: 400; color: var(--primary); text-decoration: none; font-size: 13px; }
.label-link:hover { text-decoration: underline; }

input[type=text], input[type=email], input[type=password], input[type=url],
input[type=number], input[type=tel], input[type=search],
select, textarea {
    display: block; width: 100%;
    padding: 9px 13px; border: 1px solid var(--gray-300);
    border-radius: var(--radius); font-size: 14px;
    color: var(--gray-900); background: #fff;
    transition: border-color .2s, box-shadow .2s;
    outline: none; font-family: var(--font);
}
input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; padding-right: 34px; }
textarea { resize: vertical; min-height: 90px; }
.form-row { display: grid; gap: 16px; }
.form-row-2 { grid-template-columns: 1fr 1fr; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }

/* ── Tables ── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--gray-200); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead th { background: var(--gray-50); padding: 11px 16px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--gray-500); text-align: left; border-bottom: 1px solid var(--gray-200); }
tbody td { padding: 13px 16px; border-bottom: 1px solid var(--gray-100); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--gray-50); }

/* ── Badges ── */
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-success { background: #DCFCE7; color: #15803D; }
.badge-danger  { background: #FEE2E2; color: #B91C1C; }
.badge-warning { background: #FEF9C3; color: #854D0E; }
.badge-info    { background: #DBEAFE; color: #1D4ED8; }
.badge-gray    { background: var(--gray-100); color: var(--gray-600); }
.badge-primary { background: var(--primary-light); color: var(--primary); }

/* ── Cards ── */
.card { background: #fff; border-radius: var(--radius); border: 1px solid var(--gray-200); box-shadow: var(--shadow); }
.card-header { padding: 18px 24px; border-bottom: 1px solid var(--gray-100); display: flex; align-items: center; justify-content: space-between; }
.card-header h3 { font-size: 15px; font-weight: 700; color: var(--gray-800); }
.card-body { padding: 24px; }
.card-footer { padding: 14px 24px; border-top: 1px solid var(--gray-100); background: var(--gray-50); border-radius: 0 0 var(--radius) var(--radius); }

/* ── KPI cards ── */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.kpi-card { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 20px 24px; }
.kpi-label { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--gray-400); margin-bottom: 8px; }
.kpi-value { font-size: 28px; font-weight: 800; color: var(--gray-900); }
.kpi-sub   { font-size: 12px; color: var(--gray-400); margin-top: 4px; }
.kpi-icon  { float: right; font-size: 28px; opacity: .6; }

/* ── Modal ── */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 1000; align-items: center; justify-content: center; }
.modal-overlay.open { display: flex; }
.modal { background: #fff; border-radius: 12px; max-width: 520px; width: 95%; padding: 28px; box-shadow: var(--shadow-lg); }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.modal-header h3 { font-size: 17px; font-weight: 700; }
.modal-close { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--gray-400); }

/* ── Pagination ── */
.pagination { display: flex; gap: 4px; align-items: center; margin-top: 20px; }
.pagination a, .pagination span {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 34px; height: 34px; padding: 0 8px;
    border-radius: 6px; font-size: 13px; font-weight: 600;
    text-decoration: none; color: var(--gray-600); border: 1px solid var(--gray-200);
}
.pagination a:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .dots { border: none; background: none; }

/* ── Misc ── */
hr { border: none; border-top: 1px solid var(--gray-200); margin: 20px 0; }
.text-muted { color: var(--gray-400); }
.text-small { font-size: 13px; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.text-right { text-align: right; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
code { background: var(--gray-100); padding: 2px 6px; border-radius: 4px; font-size: 13px; font-family: 'Courier New', monospace; color: var(--gray-800); }
pre { background: var(--gray-900); color: #e2e8f0; padding: 16px; border-radius: var(--radius); overflow-x: auto; font-size: 13px; line-height: 1.6; }
pre code { background: none; color: inherit; padding: 0; }
.empty-state { text-align: center; padding: 48px 24px; color: var(--gray-400); }
.empty-state .empty-icon { font-size: 48px; margin-bottom: 12px; }
.empty-state h3 { font-size: 16px; color: var(--gray-600); margin-bottom: 8px; }
.spinner { width: 20px; height: 20px; border: 2px solid var(--gray-200); border-top-color: var(--primary); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }