/* ============================================================
   FBR Extension – Tailwind-Inspired Theme
   Aligned with ZatcaExtension design system.
   Overrides Bootstrap 5.3 CSS custom properties with Tailwind's
   slate palette, layered shadows, and system-ui font stack.
   ============================================================ */

/* ==========================================================
   1. DESIGN TOKENS
   ========================================================== */
:root {
    --bs-body-bg: #f8fafc;
    --bs-body-color: #1e293b;
    --bs-secondary-color: #64748b;
    --bs-tertiary-color: #94a3b8;
    --bs-tertiary-bg: #f1f5f9;
    --bs-secondary-bg: #e2e8f0;
    --bs-emphasis-color: #0f172a;
    --bs-border-color: #e2e8f0;
    --bs-border-color-translucent: rgba(148,163,184,.2);
    --bs-link-color: #4f46e5;
    --bs-link-hover-color: #4338ca;
    --bs-body-font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;

    --z-radius: .5rem;
    --z-radius-lg: .75rem;
    --z-radius-sm: .375rem;
    --z-shadow-xs: 0 1px 2px 0 rgba(0,0,0,.05);
    --z-shadow: 0 1px 3px 0 rgba(0,0,0,.1), 0 1px 2px -1px rgba(0,0,0,.1);
    --z-shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
    --z-shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1);
    --z-ring: 0 0 0 3px rgba(99,102,241,.15);
    --z-transition: 150ms cubic-bezier(.4,0,.2,1);

    --z-primary: #4f46e5;
    --z-primary-soft: #6366f1;
    --z-success: #059669;
    --z-success-soft: #10b981;
    --z-danger: #dc2626;
    --z-danger-soft: #ef4444;
    --z-warning: #d97706;
    --z-warning-soft: #f59e0b;
    --z-info: #0284c7;

    --z-header-bg: linear-gradient(135deg, #1750ad, #0f172a);
}

/* --- Dark mode -------------------------------------------- */
[data-bs-theme="dark"] {
    --bs-body-bg: #0f172a;
    --bs-body-color: #e2e8f0;
    --bs-secondary-color: #94a3b8;
    --bs-tertiary-color: #64748b;
    --bs-tertiary-bg: #1e293b;
    --bs-secondary-bg: #334155;
    --bs-emphasis-color: #f8fafc;
    --bs-border-color: #334155;
    --bs-border-color-translucent: rgba(148,163,184,.12);
    --bs-link-color: #818cf8;
    --bs-link-hover-color: #a5b4fc;

    --z-shadow-xs: 0 1px 2px 0 rgba(0,0,0,.3);
    --z-shadow: 0 1px 3px 0 rgba(0,0,0,.4), 0 1px 2px -1px rgba(0,0,0,.3);
    --z-shadow-md: 0 4px 6px -1px rgba(0,0,0,.4), 0 2px 4px -2px rgba(0,0,0,.3);
    --z-shadow-lg: 0 10px 15px -3px rgba(0,0,0,.4), 0 4px 6px -4px rgba(0,0,0,.3);
    --z-ring: 0 0 0 3px rgba(129,140,248,.2);
    --z-header-bg: linear-gradient(135deg, #1750ad, #0f172a);
}

/* ==========================================================
   2. BASE
   ========================================================== */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: .01em;
    line-height: 1.625;
}

/* ==========================================================
   3. CARDS
   ========================================================== */
.card {
    border: 1px solid var(--bs-border-color);
    border-radius: var(--z-radius-lg);
    box-shadow: var(--z-shadow);
    transition: box-shadow var(--z-transition);
    overflow: hidden;
    background-color: var(--bs-body-bg);
}
[data-bs-theme="dark"] .card {
    background-color: var(--bs-tertiary-bg);
}
.card:hover {
    box-shadow: var(--z-shadow-md);
}
.card-header {
    border-bottom: 1px solid var(--bs-border-color);
    background-color: transparent;
    font-weight: 600;
    letter-spacing: .01em;
    padding: .8125rem 1rem;
}
.card-footer {
    border-top: 1px solid var(--bs-border-color);
    background-color: transparent;
    padding: .8125rem;
}
.card-header.bg-body-tertiary {
    background-color: var(--bs-tertiary-bg) !important;
}

/* ==========================================================
   4. BUTTONS
   ========================================================== */
.btn {
    border-radius: var(--z-radius);
    transition: all var(--z-transition);
    font-weight: 500;
    font-size: .8125rem;
    letter-spacing: .01em;
}
.btn:active {
    transform: scale(.98);
}
.btn:focus-visible {
    box-shadow: var(--z-ring);
}
.btn-sm {
    border-radius: var(--z-radius-sm);
    font-size: .75rem;
}
.btn-primary {
    --bs-btn-bg: var(--z-primary);
    --bs-btn-border-color: var(--z-primary);
    --bs-btn-hover-bg: #4338ca;
    --bs-btn-hover-border-color: #4338ca;
}
.btn-success {
    --bs-btn-bg: var(--z-success);
    --bs-btn-border-color: var(--z-success);
    --bs-btn-hover-bg: #047857;
    --bs-btn-hover-border-color: #047857;
}
.btn-danger {
    --bs-btn-bg: var(--z-danger);
    --bs-btn-border-color: var(--z-danger);
    --bs-btn-hover-bg: #b91c1c;
    --bs-btn-hover-border-color: #b91c1c;
}
.btn-warning {
    --bs-btn-bg: var(--z-warning);
    --bs-btn-border-color: var(--z-warning);
    --bs-btn-hover-bg: #b45309;
    --bs-btn-hover-border-color: #b45309;
    --bs-btn-color: #fff;
    --bs-btn-hover-color: #fff;
}
.btn-secondary {
    --bs-btn-bg: #475569;
    --bs-btn-border-color: #475569;
    --bs-btn-hover-bg: #334155;
    --bs-btn-hover-border-color: #334155;
}
.btn-outline-secondary {
    --bs-btn-color: #64748b;
    --bs-btn-border-color: #cbd5e1;
    --bs-btn-hover-bg: #f1f5f9;
    --bs-btn-hover-color: #334155;
    --bs-btn-hover-border-color: #94a3b8;
}
.btn-outline-primary {
    --bs-btn-color: var(--z-primary);
    --bs-btn-border-color: var(--z-primary);
    --bs-btn-hover-bg: var(--z-primary);
    --bs-btn-hover-color: #fff;
}
.btn-info {
    --bs-btn-bg: var(--z-info);
    --bs-btn-border-color: var(--z-info);
    --bs-btn-hover-bg: #0369a1;
    --bs-btn-hover-border-color: #0369a1;
    --bs-btn-color: #fff;
    --bs-btn-hover-color: #fff;
}

/* ==========================================================
   5. FORM CONTROLS
   ========================================================== */
.form-control, .form-select {
    border-radius: var(--z-radius);
    border-color: #cbd5e1;
    transition: border-color var(--z-transition), box-shadow var(--z-transition);
    font-size: .875rem;
}
[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
    background-color: var(--bs-tertiary-bg);
    border-color: var(--bs-secondary-bg);
    color: #cbd5e1;
}
.form-control:focus, .form-select:focus {
    border-color: var(--z-primary-soft);
    box-shadow: var(--z-ring);
}
.form-control[readonly] {
    background-color: var(--bs-tertiary-bg);
    opacity: .8;
}
.form-control-sm, .form-select-sm {
    border-radius: var(--z-radius-sm);
    font-size: .8125rem;
}
.form-label {
    font-weight: 400;
    font-size: .8125rem;
    color: var(--bs-secondary-color);
}

/* ==========================================================
   6. ALERTS
   ========================================================== */
.alert {
    border-radius: var(--z-radius);
    border: 1px solid transparent;
    border-left-width: 4px;
    font-size: .875rem;
}
.alert-danger  { background: #fef2f2; border-left-color: var(--z-danger);  color: #991b1b; }
.alert-warning { background: #fffbeb; border-left-color: var(--z-warning); color: #92400e; }
.alert-info    { background: #f0f9ff; border-left-color: var(--z-info);    color: #075985; }
.alert-success { background: #f0fdf4; border-left-color: var(--z-success); color: #166534; }
.alert-light   { background: var(--bs-tertiary-bg); border-left-color: #cbd5e1; color: var(--bs-body-color); }

[data-bs-theme="dark"] .alert-danger  { background: rgba(220,38,38,.1);  color: #fca5a5; }
[data-bs-theme="dark"] .alert-warning { background: rgba(217,119,6,.1);  color: #fcd34d; }
[data-bs-theme="dark"] .alert-info    { background: rgba(2,132,199,.1);  color: #7dd3fc; }
[data-bs-theme="dark"] .alert-success { background: rgba(5,150,105,.1);  color: #6ee7b7; }
[data-bs-theme="dark"] .alert-light   { background: var(--bs-secondary-bg); color: var(--bs-body-color); }

/* ==========================================================
   7. BADGES
   ========================================================== */
.badge {
    border-radius: .3125rem;
    font-weight: 500;
    font-size: .6875rem;
    letter-spacing: .025em;
    padding: .3em .55em;
}
.badge.bg-primary   { background-color: var(--z-primary) !important; }
.badge.bg-success   { background-color: var(--z-success) !important; }
.badge.bg-danger    { background-color: var(--z-danger) !important; }
.badge.bg-warning   { background-color: var(--z-warning) !important; color: #fff !important; }
.badge.bg-secondary { background-color: #64748b !important; }
.badge.bg-info      { background-color: var(--z-info) !important; }

/* ==========================================================
   8. NAV TABS & PILLS
   ========================================================== */
.nav-tabs .nav-link {
    border-radius: var(--z-radius) var(--z-radius) 0 0;
    transition: all var(--z-transition);
    font-weight: 500;
    font-size: .8125rem;
    color: var(--bs-secondary-color);
}
.nav-tabs .nav-link:hover {
    color: var(--bs-body-color);
}
.nav-tabs .nav-link.active {
    font-weight: 600;
}

/* ==========================================================
   9. TABLES
   ========================================================== */
.table {
    --bs-table-border-color: var(--bs-border-color);
    font-size: .8125rem;
}
thead th {
    font-weight: 600;
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--bs-secondary-color);
}

/* ==========================================================
   10. COLORED CARD HEADERS
   ========================================================== */
.card-header.bg-primary {
    background: linear-gradient(135deg, var(--z-primary), var(--z-primary-soft)) !important;
    border-bottom: none;
    color: #fff;
}
.card-header.bg-success {
    background: linear-gradient(135deg, var(--z-success), var(--z-success-soft)) !important;
    border-bottom: none;
    color: #fff;
}
.card-header.bg-danger {
    background: linear-gradient(135deg, var(--z-danger), var(--z-danger-soft)) !important;
    border-bottom: none;
    color: #fff;
}
.card-header.bg-warning {
    background: linear-gradient(135deg, var(--z-warning), var(--z-warning-soft)) !important;
    border-bottom: none;
    color: #fff;
}

/* ==========================================================
   11. INLINE CODE
   ========================================================== */
code {
    font-size: .8em;
    padding: .125em .375em;
    border-radius: .25rem;
    background-color: var(--bs-tertiary-bg);
    color: var(--z-primary);
}
[data-bs-theme="dark"] code {
    color: #a5b4fc;
}

/* ==========================================================
   12. APP HEADER
   ========================================================== */
.app-header {
    background: var(--z-header-bg);
    color: #f1f5f9;
    border-bottom: 1px solid rgba(148,163,184,.1);
}
.app-header .badge-version {
    background: rgba(248,250,252,.1);
    color: #cbd5e1;
}
.app-header .badge-public-ip {
    background: rgba(248,250,252,.1);
    color: #cbd5e1;
}

.app-header .badge-env-sandbox {
    background-color: #64748b;
}
.app-header .badge-env-production {
    background-color: var(--z-danger);
}

/* ==========================================================
   13. LOADING OVERLAY
   ========================================================== */
.loading-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(15,23,42,.4);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}
.loading-overlay.d-none {
    display: none !important;
}
.loading-overlay > div {
    border-radius: var(--z-radius-lg);
    box-shadow: var(--z-shadow-lg);
}

/* ==========================================================
   14. TEXTAREA CODE
   ========================================================== */
.textarea-code {
    font-family: ui-monospace, 'Cascadia Code', 'Fira Code', 'Menlo', monospace;
    font-size: .75rem;
    resize: vertical;
    min-height: 200px;
    white-space: pre;
    border-radius: var(--z-radius);
    background-color: var(--bs-tertiary-bg);
    border-color: var(--bs-border-color);
}

/* ==========================================================
   15. QR PREVIEW
   ========================================================== */
.qr-preview-box {
    background: #fff;
    border: 1px solid var(--bs-border-color);
    border-radius: var(--z-radius);
    padding: .5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
[data-bs-theme="dark"] .qr-preview-box {
    background: #fff;
}

/* ==========================================================
   16. SCROLLBAR
   ========================================================== */
.page-content::-webkit-scrollbar { width: 5px; }
.page-content::-webkit-scrollbar-track { background: transparent; }
.page-content::-webkit-scrollbar-thumb {
    background: var(--bs-secondary-bg);
    border-radius: 10px;
}

/* ==========================================================
   17. UTILITY OVERRIDES
   ========================================================== */
.text-primary { color: var(--z-primary) !important; }
.text-success { color: var(--z-success) !important; }
.text-danger  { color: var(--z-danger)  !important; }
.text-warning { color: var(--z-warning) !important; }
.text-info    { color: var(--z-info)    !important; }
.text-muted   { color: var(--bs-secondary-color) !important; }
.bg-body-tertiary { background-color: var(--bs-tertiary-bg) !important; }

/* ==========================================================
   18. SECTION PANEL (FBR specific)
   ========================================================== */
.section-panel {
    max-width: 720px;
    margin: 0 auto;
}