/* ================================================================
   KBServer — Clean & Elegant Styles
   ================================================================ */

/* ----- Color & Design Tokens ----- */
:root {
    /* Brand */
    --primary:        #00A6A5;
    --primary-dark:   #019999;
    --primary-light:  #48d0cf;
    --primary-soft:   #e4f7f6;
    --secondary:      #025098;
    --secondary-dark: #013666;
    --success:        #16a34a;
    --success-dark:   #15803d;
    --warning:        #f59e0b;
    --warning-dark:   #d97706;
    --danger:         #dc2626;
    --danger-dark:    #b91c1c;
    --info:           #2b88b0;

    /* Neutrals */
    --body-bg:        #f4f8f7;
    --surface:        #ffffff;
    --text-primary:   #22333b;
    --text-secondary: #5d7280;
    --text-muted:     #8aa0a9;
    --border:         #dcebe8;

    /* Shadows */
    --shadow-sm:  0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md:  0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg:  0 10px 30px rgba(0,0,0,0.10);
    --shadow-hover: 0 8px 24px rgba(0,166,165,0.14);

    /* Bootstrap bridge (keeps bg-primary / text-primary aligned) */
    --bs-primary: #00A6A5;
    --bs-primary-rgb: 0, 166, 165;
    --bs-secondary: #025098;
    --bs-secondary-rgb: 2, 80, 152;

    /* Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;

    /* Font */
    --font-sans: Tahoma, Arial, "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
    --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}


/* ----- Reset / Base ----- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background-color: var(--body-bg);
    color: var(--text-primary);
    min-height: 92vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main {
    flex: 1;
}

footer {
    margin-top: auto;
}

a {
    transition: color var(--transition-fast);
}


/* ----- Animations ----- */
@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.96); }
    to   { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.6; }
}

@keyframes shimmer {
    0%   { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Utility animation classes */
.animate-fade-in {
    animation: fadeIn var(--transition-base) ease forwards;
}

.animate-fade-in-up {
    animation: fadeInUp var(--transition-base) ease forwards;
}

.animate-slide-up {
    animation: slideUp var(--transition-base) ease forwards;
}

.animate-scale-in {
    animation: scaleIn var(--transition-base) ease forwards;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}


/* ----- Navbar ----- */
.navbar {
    transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
    box-shadow: 0 2px 16px rgba(0,0,0,0.12);
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: 0.3px;
    font-size: 1.15rem;
    transition: opacity var(--transition-fast);
}

.navbar-brand:hover {
    opacity: 0.85;
}

.navbar .nav-link {
    position: relative;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.navbar .nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0.75rem;
    right: 0.75rem;
    height: 2px;
    background-color: var(--primary);
    border-radius: 1px;
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.navbar .nav-link.active::after {
    transform: scaleX(1);
}

.navbar .nav-link:hover::after {
    transform: scaleX(0.6);
}

.navbar .nav-link.active {
    font-weight: 600;
}

.navbar .dropdown-menu {
    border: none;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    padding: 0.375rem;
    margin-top: 0.5rem;
}

.navbar .dropdown-item {
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    transition: background-color var(--transition-fast);
}

.navbar .dropdown-item:active {
    background-color: var(--primary);
}

/* ----- Genliduo-style navbar ----- */
.genliduo-navbar {
    background: #ffffff !important;
    border-bottom: 1px solid rgba(0, 166, 165, 0.14);
    box-shadow: 0 2px 16px rgba(2, 80, 152, 0.05);
}

.genliduo-navbar .navbar-brand {
    color: #183a42;
    font-weight: 700;
}

.genliduo-navbar .navbar-brand:hover {
    color: var(--primary);
    opacity: 1;
}

.genliduo-navbar .nav-link {
    color: #3a4f58 !important;
    font-weight: 500;
}

.genliduo-navbar .nav-link:hover,
.genliduo-navbar .nav-link.active {
    color: var(--primary) !important;
}

.genliduo-navbar .nav-link::after {
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    height: 3px;
    bottom: 4px;
    border-radius: 3px;
}

.genliduo-navbar .navbar-toggler {
    border-color: rgba(0, 166, 165, 0.3);
}

.genliduo-navbar .theme-toggle {
    border-color: rgba(0, 166, 165, 0.35);
    color: var(--primary);
}

.genliduo-navbar .theme-toggle:hover {
    background: var(--primary-soft);
    color: var(--primary-dark);
}

.genliduo-navbar .dropdown-menu {
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

.brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    box-shadow: 0 3px 10px rgba(0, 166, 165, 0.32);
}

[data-theme="dark"] .genliduo-navbar .navbar-brand,
[data-theme="dark"] .genliduo-navbar .nav-link {
    color: #d9f5f2 !important;
}

[data-theme="dark"] .genliduo-navbar .nav-link:hover,
[data-theme="dark"] .genliduo-navbar .nav-link.active {
    color: #50f6ea !important;
}

[data-theme="dark"] .genliduo-navbar .navbar-brand:hover {
    color: #50f6ea !important;
}

[data-theme="dark"] .genliduo-navbar .theme-toggle {
    color: #fbbf24;
    border-color: rgba(255, 255, 255, 0.2);
}


/* ----- Cards ----- */
.card {
    border: none;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-base);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.card .card-header {
    background: transparent;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    padding: 1rem 1.25rem;
}

.card .card-footer {
    background: transparent;
    border-top: 1px solid var(--border);
    padding: 0.75rem 1.25rem;
}

.card.border-primary {
    border: 2px solid var(--primary) !important;
}

.card.border-success {
    border: 2px solid var(--success) !important;
}

.card.border-warning {
    border: 2px solid var(--warning) !important;
}

.card.border-danger {
    border: 2px solid var(--danger) !important;
}

.card.border-info {
    border: 2px solid var(--info) !important;
}

.card.border-primary:hover,
.card.border-success:hover,
.card.border-warning:hover,
.card.border-danger:hover,
.card.border-info:hover {
    box-shadow: 0 0 0 3px rgba(0,166,165,0.12);
}

/* Card entrance stagger */
.card.card-stagger {
    animation: fadeInUp 0.4s ease forwards;
    opacity: 0;
}


/* ----- Buttons ----- */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        transform var(--transition-fast);
}

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

.btn:active {
    transform: translateY(0);
}

.btn:focus-visible {
    box-shadow: 0 0 0 0.2rem rgba(0,166,165,0.25);
    outline: none;
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(0,166,165,0.3);
}

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

.btn-success:hover {
    background-color: var(--success-dark);
    border-color: var(--success-dark);
    box-shadow: 0 4px 12px rgba(22,163,74,0.3);
}

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

.btn-danger:hover {
    background-color: var(--danger-dark);
    border-color: var(--danger-dark);
    box-shadow: 0 4px 12px rgba(220,38,38,0.3);
}

.btn-warning {
    color: #fff;
}

.btn-warning:hover {
    background-color: var(--warning-dark);
    border-color: var(--warning-dark);
    box-shadow: 0 4px 12px rgba(245,158,11,0.3);
}

.btn-info:hover {
    background-color: #0e7490;
    border-color: #0e7490;
    box-shadow: 0 4px 12px rgba(8,145,178,0.3);
}

/* Outline buttons */
.btn-outline-primary:hover {
    box-shadow: 0 4px 12px rgba(0,166,165,0.15);
}

.btn-outline-secondary:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.btn-outline-danger:hover {
    box-shadow: 0 4px 12px rgba(220,38,38,0.15);
}

.btn-outline-warning:hover {
    box-shadow: 0 4px 12px rgba(245,158,11,0.15);
}

/* Button group */
.btn-group .btn {
    border-radius: var(--radius-sm);
}

/* Button loading state */
.btn-loading {
    position: relative;
    pointer-events: none;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1.125rem;
    height: 1.125rem;
    margin: -0.5625rem 0 0 -0.5625rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}


/* ----- Status Badges ----- */
.badge {
    font-weight: 500;
    letter-spacing: 0.3px;
    padding: 0.35em 0.65em;
}

.badge-pending {
    background-color: var(--warning);
    color: #1e293b;
}

.badge-active {
    background-color: var(--success);
}

.badge-rejected {
    background-color: var(--danger);
}


/* ----- Dashboard Stats ----- */
#stats-row .card {
    border-radius: var(--radius-xl);
    overflow: hidden;
}

#stats-row h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

#stats-row .card-body i {
    opacity: 0.5;
}


/* ----- Tables ----- */
.table {
    margin-bottom: 0;
}

.table th {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-top: none;
    border-bottom: 2px solid var(--border);
    padding: 0.75rem 0.5rem;
}

.table td {
    vertical-align: middle;
    padding: 0.75rem 0.5rem;
    border-bottom: 1px solid var(--border);
}

.table-hover tbody tr {
    transition: background-color var(--transition-fast);
}

.table-hover tbody tr:hover {
    background-color: rgba(0,166,165,0.04);
}


/* ----- Forms ----- */
.form-control,
.form-select {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(0,166,165,0.12);
}

.form-label {
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.375rem;
    color: var(--text-primary);
}

.form-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-check-input:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(0,166,165,0.12);
}


/* ----- Hero / Display ----- */
.display-3,
.display-4 {
    font-weight: 700;
    letter-spacing: -0.02em;
}

.lead {
    font-size: 1.1rem;
    font-weight: 400;
}


/* ----- Flash Messages ----- */
#flash-messages .alert {
    animation: fadeInDown 0.3s ease forwards;
    border: none;
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-md);
}

#flash-messages .alert:not(.show) {
    opacity: 0;
}


/* ----- Loading Skeleton ----- */
.skeleton {
    background: linear-gradient(
        90deg,
        #e2e8f0 25%,
        #f1f5f9 50%,
        #e2e8f0 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
    color: transparent !important;
    user-select: none;
    pointer-events: none;
}

.skeleton-text {
    height: 0.875rem;
    margin-bottom: 0.5rem;
    width: 100%;
}

.skeleton-text:last-child {
    width: 60%;
}

.skeleton-heading {
    height: 1.375rem;
    width: 40%;
    margin-bottom: 1rem;
}

.skeleton-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
}

.skeleton-card {
    height: 8rem;
    width: 100%;
}

.card .skeleton {
    margin-bottom: 0.5rem;
}


/* ----- Toast Notifications (custom) ----- */
.toast-notification {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast-notification .toast-item {
    pointer-events: auto;
    min-width: 280px;
    max-width: 420px;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.3s ease forwards;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 0.875rem;
}

.toast-notification .toast-item.toast-leaving {
    animation: fadeInUp 0.25s ease reverse forwards;
}

.toast-notification .toast-item i {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.toast-item.toast-success {
    background-color: #f0fdf4;
    color: #166534;
    border-left: 3px solid var(--success);
}

.toast-item.toast-error {
    background-color: #fef2f2;
    color: #991b1b;
    border-left: 3px solid var(--danger);
}

.toast-item.toast-warning {
    background-color: #fffbeb;
    color: #92400e;
    border-left: 3px solid var(--warning);
}

.toast-item.toast-info {
    background-color: #ecfeff;
    color: #155e75;
    border-left: 3px solid var(--info);
}


/* ----- Loading Overlay ----- */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
    animation: fadeIn 0.2s ease;
}

.loading-overlay .spinner-border {
    width: 3rem;
    height: 3rem;
}

.spinner-inline {
    display: inline-block;
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
}


/* ----- Conversation List ----- */
#conv-list .list-group-item {
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
    border-left: 3px solid transparent;
}

#conv-list .list-group-item:hover {
    background-color: #f1f5f9;
    transform: translateX(4px);
}

#conv-list .list-group-item.active {
    border-left-color: var(--primary);
    background-color: rgba(0,166,165,0.06);
}


/* ----- Custom Scrollbar (Webkit) ----- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background-color: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: var(--text-muted);
    border-radius: 3px;
    transition: background-color var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-secondary);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--text-muted) transparent;
}


/* ----- Footer ----- */
footer {
    margin-top: auto;
    background: linear-gradient(120deg, #00A6A5 0%, #028f97 52%, #025098 100%) !important;
    border-top: 0;
    font-size: 0.825rem;
    color: #ffffff;
}

footer small {
    color: rgba(255, 255, 255, 0.88);
}

footer a {
    color: #ffffff;
}

footer a:hover {
    color: #50f6ea;
    text-decoration: underline;
}

/* ----- Smart Ball (site health inspector) ----- */
.site-smart-ball {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 1550;
    width: 68px;
    height: 68px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: radial-gradient(circle at 32% 26%, #ffffff 0%, #ccfff7 18%, rgba(0,166,165,0.08) 60%);
    box-shadow:
        0 10px 26px rgba(0, 166, 165, 0.34),
        0 0 0 8px rgba(0, 166, 165, 0.06);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.site-smart-ball:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow:
        0 16px 32px rgba(0, 166, 165, 0.42),
        0 0 0 10px rgba(0, 166, 165, 0.10);
}

.site-smart-ball img {
    width: 58px;
    height: 58px;
    pointer-events: none;
}

.smart-ball-status {
    position: absolute;
    top: 0;
    right: 0;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #94a3b8;
    border: 2px solid #ffffff;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.22);
}

.smart-ball-status.ok { background: #27c997; }
.smart-ball-status.warn { background: #f5b94a; }
.smart-ball-status.error { background: #ef4444; }
.smart-ball-status.checking { background: #38bdf8; animation: pulse 1s ease-in-out infinite; }

.smart-ball-badge {
    position: absolute;
    bottom: -2px;
    right: -2px;
    background: linear-gradient(120deg, #00A6A5, #025098);
    color: #ffffff;
    font-size: 0.58rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 20px;
    border: 2px solid #ffffff;
    letter-spacing: 0.5px;
}

.site-smart-panel {
    position: fixed;
    right: 22px;
    bottom: 104px;
    z-index: 1550;
    width: min(410px, calc(100vw - 32px));
    max-height: min(72vh, 680px);
    display: flex;
    flex-direction: column;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 20px 60px rgba(2, 80, 152, 0.18);
    overflow: hidden;
}

.site-smart-panel[hidden] {
    display: none;
}

.site-smart-panel-head {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    background: linear-gradient(110deg, #f0fffc 0%, #ffffff 55%, #f3faff 100%);
    border-bottom: 1px solid rgba(0, 166, 165, 0.14);
}

.site-smart-panel-head img {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(0, 166, 165, 0.28);
}

.site-smart-panel-head small {
    display: block;
    color: var(--text-muted);
}

.site-smart-panel-summary {
    padding: 12px 16px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

.site-smart-panel-summary .summary-title {
    font-weight: 700;
    font-size: 1rem;
}

.site-smart-panel-checks {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 8px 14px;
}

.site-health-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 9px 4px;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.06);
}

.site-health-item:last-child {
    border-bottom: 0;
}

.site-health-item .health-icon {
    flex: 0 0 auto;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    margin-top: 1px;
}

.site-health-item.ok .health-icon { background: #e3faf1; color: #12a876; }
.site-health-item.info .health-icon { background: #e6f4fe; color: #0e7fc0; }
.site-health-item.warn .health-icon { background: #fff4df; color: #d58a00; }
.site-health-item.error .health-icon { background: #fdeaea; color: #e03c3c; }

.site-health-item .health-text strong {
    display: block;
    font-size: 0.86rem;
}

.site-health-item .health-text small {
    color: var(--text-secondary);
    display: block;
    line-height: 1.45;
    word-break: break-word;
}

.site-smart-panel-foot {
    padding: 10px 14px;
    border-top: 1px solid var(--border);
    background: #fafcfc;
}

[data-theme="dark"] .site-smart-ball {
    background: radial-gradient(circle at 32% 26%, #123f47 0%, #0a2d33 55%, #04191e 100%);
}

[data-theme="dark"] .smart-ball-badge,
[data-theme="dark"] .smart-ball-status {
    border-color: #0f2430;
}

[data-theme="dark"] .site-smart-panel {
    background: #152c33;
    border-color: #27505a;
}

[data-theme="dark"] .site-smart-panel-head {
    background: linear-gradient(110deg, #123b42 0%, #152c33 55%, #153443 100%);
    border-bottom-color: #27505a;
}

[data-theme="dark"] .site-smart-panel-foot {
    background: #10262c;
    border-top-color: #27505a;
}

[data-theme="dark"] .site-health-item {
    border-bottom-color: rgba(255, 255, 255, 0.08);
}


/* ----- Empty State ----- */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 2.75rem;
    margin-bottom: 1rem;
    opacity: 0.4;
}

.empty-state h5 {
    font-weight: 600;
    color: var(--text-primary);
}


/* ----- Inline Code ----- */
code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    padding: 0.125rem 0.375rem;
    background-color: #f1f5f9;
    border-radius: var(--radius-sm);
}

pre code {
    background: none;
    padding: 0;
}


/* ----- Alerts ----- */
.alert {
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}


/* ----- Modal Polish ----- */
.modal-content {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.25rem;
}

.modal-header .modal-title {
    font-weight: 600;
    font-size: 1.05rem;
}

.modal-footer {
    border-top: 1px solid var(--border);
    padding: 0.75rem 1.25rem;
}

/* modal transitions use Bootstrap defaults */


/* ----- List Group ----- */
.list-group-item {
    border-color: var(--border);
    transition: background-color var(--transition-fast);
}

.list-group-item.active {
    background-color: var(--primary);
    border-color: var(--primary);
}


/* ----- Progress Bar ----- */
.progress {
    background-color: #e2e8f0;
    border-radius: 999px;
}

.progress-bar {
    border-radius: 999px;
}


/* ----- Utility Classes ----- */
.text-muted {
    color: var(--text-secondary) !important;
}

.hover-bg:hover {
    background-color: #f8fafc;
}

.min-w-0 {
    min-width: 0;
}


/* ================================================================
   Responsive
   ================================================================ */
@media (max-width: 768px) {
    .display-3 {
        font-size: 2rem;
    }

    .display-4 {
        font-size: 1.5rem;
    }

    #stats-row h2 {
        font-size: 1.75rem;
    }

    .navbar .nav-link::after {
        display: none;
    }

    .navbar .nav-link {
        padding: 0.5rem 0;
    }
}


/* ================================================================
   Print
   ================================================================ */
@media print {
    body {
        background: #fff;
        color: #000;
        font-size: 12pt;
    }

    .navbar,
    footer,
    .btn,
    .no-print {
        display: none !important;
    }

    .card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        break-inside: avoid;
        page-break-inside: avoid;
        transform: none !important;
    }

    .card:hover {
        transform: none !important;
        box-shadow: none !important;
    }

    .table th {
        background: #f1f5f9 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #555;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }

    #flash-messages {
        display: none;
    }
}


/* ================================================================
   Dark Mode
   ================================================================ */
[data-theme="dark"] {
    --body-bg:        #0f172a;
    --surface:        #1e293b;
    --text-primary:   #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted:     #64748b;
    --border:         #334155;
}

[data-theme="dark"] body {
    background-color: var(--body-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .card {
    background: var(--surface);
}

[data-theme="dark"] .navbar.bg-primary,
[data-theme="dark"] .genliduo-navbar {
    background: #0b3136 !important;
}

[data-theme="dark"] .table {
    color: var(--text-primary);
}

[data-theme="dark"] .table td,
[data-theme="dark"] .table th {
    border-color: var(--border);
}

[data-theme="dark"] .table-hover tbody tr:hover {
    background-color: rgba(255,255,255,0.04);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: var(--surface);
    border-color: var(--border);
    color: var(--text-primary);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background-color: var(--surface);
    color: var(--text-primary);
}

[data-theme="dark"] .modal-content {
    background: var(--surface);
}

[data-theme="dark"] .dropdown-menu {
    background: var(--surface);
    border-color: var(--border);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item:hover {
    background-color: rgba(255,255,255,0.06);
}

[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

[data-theme="dark"] footer {
    background: linear-gradient(120deg, #0b3b41, #123f56) !important;
}

[data-theme="dark"] .skeleton {
    background: linear-gradient(90deg, #334155 25%, #475569 50%, #334155 75%);
    background-size: 200% 100%;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background-color: #475569;
}

[data-theme="dark"] code {
    background-color: #334155;
    color: #e2e8f0;
}

/* Theme toggle button */
.theme-toggle {
    background: none;
    border: 1px solid rgba(255,255,255,0.3);
    color: #fff;
    border-radius: 50%;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
    padding: 0;
}

.theme-toggle:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.5);
}

[data-theme="dark"] .theme-toggle {
    border-color: rgba(255,255,255,0.2);
    color: #fbbf24;
}


/* ================================================================
   Chat UI — Message Bubbles
   ================================================================ */
.chat-messages {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem 0;
}

.chat-bubble {
    max-width: 85%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    animation: fadeInUp 0.25s ease forwards;
    line-height: 1.6;
    font-size: 0.925rem;
}

.chat-bubble.user {
    align-self: flex-end;
    background: var(--primary);
    color: #fff;
    border-bottom-right-radius: var(--radius-sm);
}

.chat-bubble.assistant {
    align-self: flex-start;
    background: var(--surface);
    border: 1px solid var(--border);
    border-bottom-left-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .chat-bubble.assistant {
    background: var(--surface);
    border-color: var(--border);
}

.chat-bubble .bubble-time {
    font-size: 0.7rem;
    opacity: 0.6;
    margin-top: 0.375rem;
    text-align: right;
}

.chat-bubble pre {
    background: rgba(0,0,0,0.06);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    overflow-x: auto;
    margin: 0.5rem 0;
}

[data-theme="dark"] .chat-bubble pre {
    background: rgba(0,0,0,0.3);
}

.chat-typing {
    display: flex;
    gap: 4px;
    padding: 0.75rem 1rem;
    align-self: flex-start;
}

.chat-typing span {
    width: 8px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: pulse 1.4s ease-in-out infinite;
}

.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }


/* ================================================================
   Copy Button
   ================================================================ */
.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    opacity: 0;
}

.chat-bubble:hover .copy-btn,
pre:hover .copy-btn,
.copy-btn.always-show {
    opacity: 1;
}

.copy-btn:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(0,166,165,0.06);
}

.copy-btn.copied {
    color: var(--success);
    border-color: var(--success);
}


/* ================================================================
   Confirmation Dialog
   ================================================================ */
.confirm-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1060;
    animation: fadeIn 0.15s ease;
}

.confirm-dialog {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1.5rem;
    max-width: 400px;
    width: 90%;
    animation: scaleIn 0.2s ease;
}

.confirm-dialog h6 {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.confirm-dialog p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}

.confirm-dialog .confirm-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}


/* ================================================================
   Keyboard Shortcuts Hint
   ================================================================ */
.kbd {
    display: inline-block;
    padding: 0.125rem 0.375rem;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    background: #f1f5f9;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

[data-theme="dark"] .kbd {
    background: #334155;
    border-color: #475569;
}

/* ═══════════ Responsive tuning (RWD) ═══════════
   Keeps layouts usable from small phones to ultra-wide monitors:
   - allow text zoom on mobile
   - toolbars wrap instead of overflowing
   - full-height split views stack below lg
   - wide screens may use extra width for 2-3 column managers   */

html { -webkit-text-size-adjust: 100%; }

/* Toolbar rows: wrap controls and let fixed-width filters shrink. */
.toolbar-row {
    flex-wrap: wrap;
    gap: .5rem;
}
.toolbar-row > * {
    min-width: 0;
}
.toolbar-control {
    width: 200px;
    max-width: 100%;
}
.toolbar-control-xs {
    width: 140px;
    max-width: 100%;
}

/* Split views: stack below lg instead of squeezing two panes side-by-side. */
@media (max-width: 991.98px) {
    #collector-layout {
        flex-direction: column !important;
        height: auto !important;
        min-height: 0 !important;
    }
    #collector-left,
    #collector-right {
        flex: none !important;
        width: 100% !important;
        max-width: 100% !important;
    }
    #collector-left {
        max-height: 45vh;
        min-height: 300px;
    }
    #collector-right {
        min-height: 55vh;
    }
    #col-splitter {
        display: none !important;
    }
}

@media (max-width: 767.98px) {
    .toolbar-control,
    .toolbar-control-xs {
        width: 100% !important;
    }
    .toolbar-row .btn-group {
        width: 100%;
    }
    /* Overlay popups should never overflow the viewport. */
    .modal-dialog {
        margin: .5rem auto;
    }
    .modal-body .table-responsive {
        margin-inline: -0.25rem;
    }
    h4, h5 {
        overflow-wrap: anywhere;
    }
}

/* Very wide monitors: let admin workspaces use the extra room. */
@media (min-width: 1600px) {
    main.container {
        max-width: 1560px;
    }
}