/* 1. Google Font import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* 2. CSS Variables */
:root {
    --color-bg: #F8F9FC;
    --color-surface: #FFFFFF;
    --color-border: #E5E7EB;
    --color-text-primary: #111827;
    --color-text-secondary: #6B7280;
    --color-text-muted: #9CA3AF;
    --color-accent: #4F46E5;
    --color-accent-hover: #4338CA;
    --color-accent-light: #EEF2FF;
    --color-success: #10B981;
    --color-success-light: #D1FAE5;
    --color-warning: #F59E0B;
    --color-warning-light: #FEF3C7;
    --color-danger: #EF4444;
    --color-danger-light: #FEE2E2;
    --color-info: #3B82F6;
    --color-info-light: #DBEAFE;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.04);
    --radius: 8px;
    --radius-lg: 12px;
}

/* 3. Reset + base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', sans-serif; background: var(--color-bg); color: var(--color-text-primary); font-size: 14px; line-height: 1.5; }

/* 4. Layout: sidebar (240px, fixed) + main content */
.app-layout { display: flex; min-height: 100vh; }
.sidebar { width: 240px; min-width: 240px; background: var(--color-surface); border-right: 1px solid var(--color-border); display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; z-index: 100; }
.main-content { margin-left: 240px; flex: 1; padding: 32px; min-height: 100vh; }

/* 5. Sidebar internals */
.sidebar-brand { padding: 20px 20px 16px; border-bottom: 1px solid var(--color-border); }
.sidebar-brand-name { font-size: 15px; font-weight: 700; color: var(--color-text-primary); display: block; }
.sidebar-brand-sub { font-size: 11px; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.sidebar-nav { flex: 1; padding: 12px 0; }
.sidebar-section { padding: 0 12px; margin-bottom: 4px; }
.sidebar-section-label { font-size: 10px; font-weight: 600; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 1px; padding: 8px 8px 4px; display: block; }
.nav-link { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: var(--radius); color: var(--color-text-secondary); text-decoration: none; font-size: 14px; font-weight: 500; transition: all 0.15s; margin-bottom: 2px; }
.nav-link:hover { background: var(--color-bg); color: var(--color-text-primary); }
.nav-link.active { background: var(--color-accent-light); color: var(--color-accent); }
.nav-icon { width: 18px; text-align: center; font-size: 16px; }
.sidebar-footer { padding: 16px; border-top: 1px solid var(--color-border); }
.sidebar-user-email { font-size: 12px; color: var(--color-text-muted); margin-bottom: 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 6. Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: var(--radius); font-size: 14px; font-weight: 500; cursor: pointer; border: none; text-decoration: none; transition: all 0.15s; white-space: nowrap; }
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-hover); color: #fff; }
.btn-secondary { background: var(--color-surface); color: var(--color-text-primary); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-bg); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #DC2626; color: #fff; }
.btn-ghost { background: transparent; color: var(--color-text-secondary); border: 1px solid var(--color-border); }
.btn-ghost:hover { background: var(--color-bg); color: var(--color-text-primary); }

/* 7. Card */
.card { background: var(--color-surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); }
.card-body { padding: 24px; }
.card-header { padding: 16px 24px; border-bottom: 1px solid var(--color-border); display: flex; align-items: center; justify-content: space-between; }
.card-header-title { font-size: 15px; font-weight: 600; color: var(--color-text-primary); }

/* 8. Table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead th { background: var(--color-bg); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--color-text-secondary); padding: 10px 16px; text-align: left; border-bottom: 1px solid var(--color-border); }
thead th.text-right { text-align: right; }
tbody td { padding: 12px 16px; border-bottom: 1px solid var(--color-border); color: var(--color-text-primary); vertical-align: middle; }
tbody td.text-right { text-align: right; }
tbody td.text-center { text-align: center; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #FAFAFA; }

/* 9. Forms */
.form-group { margin-bottom: 18px; }
label { display: block; font-size: 14px; font-weight: 500; color: var(--color-text-primary); margin-bottom: 6px; }
input[type=text], input[type=email], input[type=number], input[type=password], select, textarea {
    width: 100%; border: 1px solid var(--color-border); border-radius: var(--radius);
    padding: 8px 12px; font-size: 14px; font-family: inherit; color: var(--color-text-primary);
    background: var(--color-surface); transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px var(--color-accent-light); }
.input-hint { font-size: 12px; color: var(--color-text-muted); margin-top: 4px; }
.form-error { font-size: 12px; color: var(--color-danger); margin-top: 4px; }
.input-group { display: flex; }
.input-group input { border-radius: var(--radius) 0 0 var(--radius); }
.input-group .input-suffix { display: flex; align-items: center; padding: 0 12px; background: var(--color-bg); border: 1px solid var(--color-border); border-left: none; border-radius: 0 var(--radius) var(--radius) 0; color: var(--color-text-secondary); font-size: 14px; }

/* 10. Badges */
.badge { display: inline-flex; align-items: center; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 500; }
.badge-success { background: var(--color-success-light); color: var(--color-success); }
.badge-warning { background: var(--color-warning-light); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-light); color: var(--color-danger); }
.badge-info { background: var(--color-info-light); color: var(--color-info); }
.badge-neutral { background: var(--color-bg); color: var(--color-text-secondary); border: 1px solid var(--color-border); }
.badge-accent { background: var(--color-accent-light); color: var(--color-accent); }

/* 11. Flash messages */
.flash-list { margin-bottom: 20px; display: flex; flex-direction: column; gap: 8px; }
.flash { padding: 12px 16px; border-radius: var(--radius); font-size: 14px; font-weight: 500; display: flex; align-items: center; justify-content: space-between; }
.flash-success { background: var(--color-success-light); color: #065F46; border: 1px solid #A7F3D0; }
.flash-error { background: var(--color-danger-light); color: #991B1B; border: 1px solid #FECACA; }
.flash-info { background: var(--color-info-light); color: #1E40AF; border: 1px solid #BFDBFE; }
.flash-close { background: none; border: none; cursor: pointer; font-size: 16px; color: inherit; opacity: 0.6; line-height: 1; }
.flash-close:hover { opacity: 1; }

/* 12. Page header */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.page-title { font-size: 20px; font-weight: 700; color: var(--color-text-primary); }
.page-subtitle { font-size: 14px; color: var(--color-text-secondary); margin-top: 2px; }

/* 13. Login page */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--color-bg); }
.login-card { width: 100%; max-width: 400px; }
.login-brand { text-align: center; margin-bottom: 24px; }
.login-brand-name { font-size: 22px; font-weight: 700; color: var(--color-text-primary); }
.login-brand-sub { font-size: 13px; color: var(--color-text-muted); margin-top: 4px; }

/* 14. Empty state */
.empty-state { text-align: center; padding: 48px 24px; color: var(--color-text-secondary); }
.empty-state-icon { font-size: 32px; margin-bottom: 12px; }
.empty-state-text { font-size: 15px; }

/* 15. Utility */
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-accent { color: var(--color-accent); }
.font-mono { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 13px; }
.font-semibold { font-weight: 600; }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.w-full { width: 100%; }

/* 16. Checkbox */
input[type=checkbox] { width: 16px; height: 16px; cursor: pointer; accent-color: var(--color-accent); }

/* 17. Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 200; display: flex; align-items: center; justify-content: center; }
.modal { background: var(--color-surface); border-radius: var(--radius-lg); padding: 24px; max-width: 440px; width: 90%; box-shadow: var(--shadow-md); }
.modal-title { font-size: 16px; font-weight: 600; margin-bottom: 12px; }
.modal-body { color: var(--color-text-secondary); margin-bottom: 20px; }
.modal-footer { display: flex; gap: 8px; justify-content: flex-end; }

/* 18. Tfoot summary row */
tfoot td { padding: 12px 16px; font-weight: 600; background: var(--color-bg); border-top: 2px solid var(--color-border); }
tfoot td.text-right { text-align: right; }

/* 19. Audit log action badges */
.audit-PAYOUT_EXECUTED { background: var(--color-info-light); color: var(--color-info); }
.audit-IMPORT_COMPLETED { background: var(--color-success-light); color: var(--color-success); }
.audit-IMPORT_REJECTED { background: var(--color-danger-light); color: var(--color-danger); }
.audit-AUTHOR_DELETED, .audit-USER_DELETED { background: var(--color-danger-light); color: var(--color-danger); }
.audit-default { background: var(--color-bg); color: var(--color-text-secondary); border: 1px solid var(--color-border); }

/* 20. Code tag */
code { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 12px; background: var(--color-bg); padding: 1px 6px; border-radius: 4px; border: 1px solid var(--color-border); }