:root {
    --bg-base: #0b0f19;
    --bg-surface: #111827;
    --bg-card: rgba(17, 24, 39, 0.75);
    --bg-card-hover: rgba(31, 41, 55, 0.85);
    --bg-input: #1f2937;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-subtle: rgba(255, 255, 255, 0.04);
    --border-focus: #6366f1;

    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --text-code: #cbd5e1;
    --code-bg: rgba(255, 255, 255, 0.06);

    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.25);

    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.12);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.12);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --info: #0ea5e9;
    --info-bg: rgba(14, 165, 233, 0.12);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
    --topbar-bg: rgba(11, 15, 25, 0.8);
    --table-hover: rgba(255, 255, 255, 0.02);
    --btn-secondary-bg: rgba(255, 255, 255, 0.08);
    --btn-secondary-hover: rgba(255, 255, 255, 0.14);
    --modal-overlay-bg: rgba(0, 0, 0, 0.75);
    --chat-assistant-bg: rgba(17, 24, 39, 0.85);
    --progress-track-bg: rgba(255, 255, 255, 0.08);
    --scrollbar-thumb: rgba(255, 255, 255, 0.14);
    --scrollbar-thumb-hover: rgba(255, 255, 255, 0.24);
    --body-bg-gradient: radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.08) 0%, transparent 40%), radial-gradient(circle at 85% 80%, rgba(14, 165, 233, 0.06) 0%, transparent 40%);

    --backdrop-blur: blur(16px);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-base: #f8fafc;
    --bg-surface: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --bg-input: #ffffff;
    --border-color: #e2e8f0;
    --border-subtle: #f1f5f9;
    --border-focus: #4f46e5;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-code: #0f172a;
    --code-bg: #f1f5f9;

    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-glow: rgba(79, 70, 229, 0.2);

    --success: #059669;
    --success-bg: rgba(5, 150, 105, 0.1);
    --warning: #d97706;
    --warning-bg: rgba(217, 119, 6, 0.1);
    --danger: #dc2626;
    --danger-bg: rgba(220, 38, 38, 0.1);
    --info: #0284c7;
    --info-bg: rgba(2, 132, 199, 0.1);

    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05), 0 0 0 1px rgba(0, 0, 0, 0.04);
    --topbar-bg: rgba(255, 255, 255, 0.85);
    --table-hover: #f8fafc;
    --btn-secondary-bg: #f1f5f9;
    --btn-secondary-hover: #e2e8f0;
    --modal-overlay-bg: rgba(15, 23, 42, 0.45);
    --chat-assistant-bg: #ffffff;
    --progress-track-bg: #e2e8f0;
    --scrollbar-thumb: rgba(0, 0, 0, 0.15);
    --scrollbar-thumb-hover: rgba(0, 0, 0, 0.25);
    --body-bg-gradient: radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.05) 0%, transparent 40%), radial-gradient(circle at 85% 80%, rgba(14, 165, 233, 0.04) 0%, transparent 40%);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: 'Vazirmatn', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    display: flex;
    direction: rtl;
    line-height: 1.6;
    overflow-x: hidden;
    background-image: var(--body-bg-gradient);
    background-attachment: fixed;
    transition: background-color 0.25s ease, color 0.25s ease;
}

/* Layout */
.app-container {
    display: flex;
    width: 100vw;
    min-height: 100vh;
}

.sidebar {
    width: 270px;
    background-color: var(--bg-surface);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    flex-shrink: 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 8px 24px 8px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #6366f1, #0ea5e9);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 22px;
    box-shadow: 0 0 15px var(--primary-glow);
}

.brand-title {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(90deg, #fff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="light"] .brand-title {
    background: linear-gradient(90deg, #0f172a, #334155);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-subtitle {
    font-size: 11px;
    color: var(--text-muted);
}

.nav-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex-grow: 1;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-item a:hover {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
}

.nav-item.active a {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.18), rgba(99, 102, 241, 0.05));
    color: #818cf8;
    border-right: 3px solid var(--primary);
}

.nav-icon {
    font-size: 18px;
    display: flex;
    align-items: center;
}

.sidebar-footer {
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.top-bar {
    height: 70px;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    background: var(--topbar-bg);
    backdrop-filter: var(--backdrop-blur);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color 0.25s ease, border-color 0.25s ease;
}

.theme-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 12.5px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.theme-toggle-btn:hover {
    border-color: var(--primary);
    color: var(--text-primary);
    background: var(--bg-card-hover);
    transform: translateY(-1px);
}

.theme-toggle-icon {
    font-size: 15px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
}

.endpoint-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}

.endpoint-badge:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.endpoint-url {
    font-family: monospace;
    color: #38bdf8;
    direction: ltr;
}

.content-body {
    padding: 32px;
    flex-grow: 1;
    overflow-y: auto;
}

/* Cards & Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.analytics-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 28px;
}

@media (max-width: 900px) {
    .analytics-grid {
        grid-template-columns: 1fr;
    }
}

.stat-card {
    background: var(--bg-card);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.15);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 12px;
}

.stat-val {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.icon-blue { background: rgba(14, 165, 233, 0.15); color: #38bdf8; }
.icon-green { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.icon-yellow { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.icon-red { background: rgba(239, 68, 68, 0.15); color: #f87171; }
.icon-purple { background: rgba(99, 102, 241, 0.15); color: #818cf8; }

/* Panels & Tables */
.panel {
    background: var(--bg-card);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-card);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.panel-title {
    font-size: 17px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
    text-align: right;
}

th {
    padding: 12px 14px;
    color: var(--text-muted);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 14px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}

tr:hover td {
    background-color: var(--table-hover);
    color: var(--text-primary);
}

/* Badges & Tags */
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
}

.status-active { 
    background: var(--success-bg); 
    color: var(--success); 
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.15);
}
.status-depleted { 
    background: var(--danger-bg); 
    color: var(--danger); 
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.15);
}
.status-rate_limited { 
    background: var(--warning-bg); 
    color: var(--warning); 
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.15);
}
.status-disabled { 
    background: var(--btn-secondary-bg); 
    color: var(--text-muted); 
}

.tag-stream {
    background: rgba(14, 165, 233, 0.15);
    color: #38bdf8;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
}

.tag-failover {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Buttons & Inputs */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 18px;
    border-radius: var(--radius-md);
    font-size: 13.5px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-decoration: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 0 15px var(--primary-glow);
}
.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--btn-secondary-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover {
    background: var(--btn-secondary-hover);
}

.btn-danger {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
    background: var(--danger);
    color: white;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

input, select, textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
    font-family: inherit;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--modal-overlay-bg);
    backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 520px;
    padding: 24px;
    box-shadow: var(--shadow-card);
    animation: modalSlide 0.2s ease-out;
}

@keyframes modalSlide {
    from { opacity: 0; transform: translateY(-15px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-title {
    font-size: 17px;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
}

/* Playground Chat */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 520px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-base);
    overflow: hidden;
}

.chat-messages {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.chat-bubble {
    max-width: 82%;
    padding: 14px 18px;
    border-radius: var(--radius-lg);
    font-size: 14px;
    line-height: 1.7;
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
    transition: var(--transition);
}

.bubble-user {
    align-self: flex-start;
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: white;
    border-bottom-right-radius: var(--radius-sm);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
}

.bubble-assistant {
    align-self: flex-end;
    background: var(--chat-assistant-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-bottom-left-radius: var(--radius-sm);
}

.bubble-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-color);
    font-size: 11.5px;
}

.bubble-sender {
    font-weight: 600;
    color: #818cf8;
}

.badge-status-online {
    color: #34d399;
    font-size: 11px;
}

.bubble-text {
    white-space: pre-wrap;
    word-break: break-word;
}

.bubble-actions {
    display: flex;
    justify-content: flex-end;
    gap: 6px;
    margin-top: 8px;
    padding-top: 6px;
    border-top: 1px solid var(--border-color);
}

.bubble-copy-btn {
    background: var(--btn-secondary-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    padding: 3px 8px;
    font-size: 11px;
    cursor: pointer;
    transition: var(--transition);
}

.bubble-copy-btn:hover {
    background: var(--btn-secondary-hover);
    color: var(--text-primary);
}

.quick-chip {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 5px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.quick-chip:hover {
    background: var(--primary-glow);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}

.typing-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    background: #818cf8;
    border-radius: 50%;
    animation: typingBounce 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }

@keyframes typingBounce {
    0%, 80%, 100% { transform: scale(0); opacity: 0.3; }
    40% { transform: scale(1); opacity: 1; }
}

.chat-input-bar {
    display: flex;
    padding: 14px;
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    gap: 10px;
    align-items: center;
}

.chat-input-bar textarea {
    flex-grow: 1;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    resize: none;
    max-height: 120px;
    overflow-y: auto;
    font-family: inherit;
    line-height: 1.5;
    outline: none;
    transition: var(--transition);
}

.chat-input-bar textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.toast {
    position: fixed;
    bottom: 24px;
    left: 24px;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    box-shadow: var(--shadow-card);
    z-index: 2000;
    display: none;
    font-size: 13.5px;
    animation: toastIn 0.25s ease-out;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: var(--radius-full);
}

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

.code-block {
    direction: ltr;
    font-family: monospace;
    font-size: 12.5px;
    color: var(--text-code);
    overflow-x: auto;
    line-height: 1.5;
}

/* Responsive adjustments */
@media (max-width: 900px) {
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        border-left: none;
        border-bottom: 1px solid var(--border-color);
        padding: 14px;
    }
    .nav-menu {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 6px;
    }
    .content-body {
        padding: 16px;
    }
    .top-bar {
        padding: 0 16px;
    }
}

/* Credit & Quota Progress Bars & Badges */
.credit-progress-container {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 160px;
}

.credit-progress-bar {
    width: 100%;
    height: 7px;
    background: var(--progress-track-bg);
    border-radius: 999px;
    overflow: hidden;
    position: relative;
}

.credit-progress-fill {
    height: 100%;
    border-radius: 999px;
    transition: width 0.3s ease;
}

.credit-fill-green {
    background: linear-gradient(90deg, #10b981, #34d399);
}

.credit-fill-yellow {
    background: linear-gradient(90deg, #f59e0b, #fbbf24);
}

.credit-fill-red {
    background: linear-gradient(90deg, #ef4444, #f87171);
}

.credit-numbers {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    font-family: monospace;
}

.credit-unlimited-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    background: rgba(16, 185, 129, 0.12);
    color: #34d399;
    border-radius: var(--radius-sm);
    font-size: 11.5px;
    font-weight: 600;
}

.credit-expired-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    background: rgba(239, 68, 68, 0.12);
    color: #f87171;
    border-radius: var(--radius-sm);
    font-size: 11.5px;
    font-weight: 600;
}

.token-stat-badge {
    display: flex;
    flex-direction: column;
    font-size: 11.5px;
    line-height: 1.4;
    font-family: monospace;
}