/* ==========================================================================
   DESIGN SYSTEM & CUSTOM PROPERTIES
   ========================================================================== */
:root {
    /* Color Palette - Dark Theme (Default) */
    --bg-primary: #0A0D0A;
    --bg-secondary: #131713;
    --bg-tertiary: #191E19;
    --bg-glass: rgba(19, 23, 19, 0.75);
    --bg-glass-hover: rgba(25, 30, 25, 0.85);
    --border-glass: rgba(163, 230, 53, 0.15);
    --border-glass-hover: rgba(163, 230, 53, 0.3);
    
    --text-primary: #FFFFFF;
    --text-secondary: #90A090;
    --text-muted: #556055;
    
    --accent-blue: #A3E635; /* Neon Lime/Teal */
    --accent-green: #22C55E;
    --accent-grad: linear-gradient(135deg, #A3E635 0%, #22C55E 100%);
    --accent-glow: rgba(163, 230, 53, 0.2);
    --accent-rose: #EF4444;
    
    /* Layout Tokens */
    --font-sans: 'Inter', sans-serif;
    --font-display: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --header-height: 60px;
}

/* Light Theme Variables Toggle */
[data-theme="light"] {
    --bg-primary: #F4F7F4;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #E8EFE8;
    --bg-glass: rgba(255, 255, 255, 0.85);
    --bg-glass-hover: rgba(232, 239, 232, 0.95);
    --border-glass: rgba(101, 163, 0, 0.2);
    --border-glass-hover: rgba(101, 163, 0, 0.4);
    
    --text-primary: #121812;
    --text-secondary: #586558;
    --text-muted: #9BB09B;
    
    --accent-blue: #65A30D;
    --accent-green: #16A34A;
    --accent-grad: linear-gradient(135deg, #65A30D 0%, #16A34A 100%);
    --accent-glow: rgba(101, 163, 0, 0.15);
    --accent-rose: #DC2626;
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
}

/* ==========================================================================
   RESET & BASICS
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Animated Ambient Gradient background */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(circle at 15% 20%, var(--accent-glow) 0%, transparent 60%),
        radial-gradient(circle at 85% 80%, rgba(34, 197, 94, 0.08) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
    animation: ambientShift 15s ease infinite alternate;
}

@keyframes ambientShift {
    0% { transform: scale(1) translate(0px, 0px); }
    100% { transform: scale(1.05) translate(20px, -20px); }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-glass);
    border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-blue);
}

/* ==========================================================================
   HEADER COMPONENT
   ========================================================================== */
header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-glass);
    display: grid;
    grid-template-columns: 240px 1fr auto;
    align-items: center;
    padding: 0 1.25rem;
    z-index: 100;
    box-shadow: var(--shadow-md);
    position: relative;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-toggle {
    display: block; /* Always visible to toggle left sidebar */
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.sidebar-toggle:hover {
    color: var(--accent-blue);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
}

.logo-img {
    height: 30px;
    width: auto;
    display: inline-block;
}

.logo-text span {
    color: var(--accent-blue);
}

/* API Connection Selector */
.header-center {
    display: flex;
    justify-content: center;
    width: 100%;
}

.api-config-group {
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-full);
    padding: 0.25rem 0.75rem;
    width: 480px;
    max-width: 90%;
    gap: 0.5rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.api-config-group:focus-within {
    border-color: var(--accent-blue);
    box-shadow: 0 0 12px var(--accent-glow);
}

.api-icon {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.api-config-group input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    flex-grow: 1;
}

.api-badge {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    background: var(--bg-tertiary);
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.api-badge .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #EAB308; /* Yellow = unknown */
    display: inline-block;
}

.api-badge.online .dot { background: var(--accent-green); }
.api-badge.offline .dot { background: var(--accent-rose); }

.header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.theme-toggle-btn, .panel-toggle-btn {
    background: var(--bg-primary);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    transition: all var(--transition-fast);
}

.theme-toggle-btn:hover, .panel-toggle-btn:hover {
    border-color: var(--accent-blue);
    background: var(--bg-tertiary);
}

/* Toggle light/dark icons */
.theme-toggle-btn .icon-sun { display: none; }
[data-theme="light"] .theme-toggle-btn .icon-sun { display: block; }
[data-theme="light"] .theme-toggle-btn .icon-moon { display: none; }

/* ==========================================================================
   LAYOUT CONTAINERS
   ========================================================================== */
.main-container {
    display: flex;
    flex-grow: 1;
    height: calc(100vh - var(--header-height));
    height: calc(100dvh - var(--header-height));
    position: relative;
    overflow: hidden;
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: 90;
}

/* ==========================================================================
   LEFT SIDEBAR: MODES & METRICS
   ========================================================================== */
.sidebar-left {
    width: 260px;
    flex-shrink: 0;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-glass);
    display: flex;
    flex-direction: column;
    z-index: 95;
    margin-left: -261px; /* Hidden by default on desktop layout */
    transition: margin-left var(--transition-normal), transform var(--transition-normal);
}

.sidebar-left.open {
    margin-left: 0;
}

.sidebar-scroll-area {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.new-chat-btn {
    background: var(--accent-grad);
    color: var(--bg-primary);
    border: none;
    font-family: var(--font-display);
    font-weight: 700;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.new-chat-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.sidebar-section-title {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 0.6rem;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.sidebar-mode-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.sidebar-mode-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 0.7rem 0.85rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.85rem;
    font-family: var(--font-display);
    font-weight: 500;
    text-align: left;
    transition: all var(--transition-fast);
}

.sidebar-mode-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-mode-btn.active {
    background: var(--bg-tertiary);
    border-color: var(--border-glass);
    color: var(--accent-blue);
    box-shadow: inset 0 0 10px rgba(163, 230, 53, 0.05);
}

/* Database stats card */
.db-stats-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
}

.stat-lbl {
    color: var(--text-secondary);
}

.stat-val {
    font-family: var(--font-mono);
    color: var(--accent-blue);
    font-weight: 600;
}

/* Color Presets Grid */
.color-presets-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.preset-btn {
    border: 1px solid var(--border-glass);
    background: var(--bg-tertiary);
    height: 38px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    position: relative;
}

.preset-btn:hover {
    border-color: var(--accent-blue);
    background: var(--bg-glass-hover);
    transform: translateY(-1px);
}

.preset-btn.active {
    border-color: var(--accent-blue);
    box-shadow: 0 0 8px var(--accent-glow);
    background: var(--bg-glass-hover);
}

.preset-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
}

/* Scale Preset Buttons */
.scale-preset-list {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.scale-btn {
    flex: 1;
    background: transparent;
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.78rem;
    font-family: var(--font-display);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-fast);
}

.scale-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--accent-blue);
}

.scale-btn.active {
    background: var(--bg-tertiary);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    box-shadow: inset 0 0 10px rgba(163, 230, 53, 0.05);
}

/* API Secret Key Box */
.secret-key-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 0.55rem 0.75rem;
    display: flex;
    align-items: center;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.secret-key-card:focus-within {
    border-color: var(--accent-blue);
    box-shadow: 0 0 8px var(--accent-glow);
}

.secret-key-card input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    width: 100%;
}

/* Footer Section inside Sidebar */
.sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border-glass);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.server-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.25rem;
}

.server-meta .val {
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.version-tag {
    text-align: right;
    font-size: 0.65rem;
}

/* ==========================================================================
   CHAT AREA COMPONENT
   ========================================================================== */
.chat-area {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    position: relative;
    z-index: 10;
    min-height: 0;
}

.messages-container {
    flex-grow: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 2rem 10% 4rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    scroll-behavior: smooth;
}

/* Welcome Hero state */
.welcome-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin: auto;
    max-width: 600px;
    padding: 2rem;
    animation: fadeIn 0.5s ease;
}

.welcome-hero-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: 1.25rem;
}

.welcome-hero h3 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.welcome-hero p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 2rem;
}

.suggestions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    width: 100%;
}

.suggestion-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 1rem 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.suggestion-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--bg-glass-hover);
}

.suggestion-card .card-icon {
    color: var(--accent-blue);
    font-size: 1.2rem;
}

.suggestion-card .card-text {
    font-size: 0.78rem;
    font-weight: 500;
    line-height: 1.4;
    color: var(--text-secondary);
}

/* Chat bubble styling */
.message-bubble {
    display: flex;
    gap: 1rem;
    max-width: 800px;
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.message-bubble.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-bubble.bot {
    align-self: flex-start;
}

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.95rem;
}

.message-bubble.user .avatar {
    background: var(--text-secondary);
    color: var(--bg-primary);
}

.message-bubble.bot .avatar {
    background: var(--accent-grad);
    color: var(--bg-primary);
    overflow: hidden;
}

.bot-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.bubble-content {
    padding: 0.85rem 1.15rem;
    border-radius: var(--radius-lg);
    line-height: 1.6;
    font-size: 0.9rem;
    max-width: calc(100% - 48px);
}

.bubble-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.5rem 0;
    font-size: 0.82rem;
    display: block;
    overflow-x: auto;
}

.message-bubble.user .bubble-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-top-right-radius: 0;
}

.message-bubble.bot .bubble-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-top-left-radius: 0;
}

/* Markdown parsing in bot bubble */
.bubble-content h1, .bubble-content h2, .bubble-content h3 {
    font-family: var(--font-display);
    margin: 0.75rem 0 0.4rem;
}
.bubble-content h3 { font-size: 1.05rem; }
.bubble-content p { margin-bottom: 0.5rem; }
.bubble-content p:last-child { margin-bottom: 0; }
.bubble-content ul, .bubble-content ol {
    margin-left: 1.25rem;
    margin-bottom: 0.5rem;
}
.bubble-content code {
    font-family: var(--font-mono);
    background: var(--bg-primary);
    padding: 0.15rem 0.35rem;
    border-radius: 4px;
    font-size: 0.8rem;
    border: 1px solid var(--border-glass);
}
.bubble-content pre {
    background: var(--bg-primary);
    padding: 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-glass);
    overflow-x: auto;
    margin: 0.5rem 0;
}
.bubble-content pre code {
    background: transparent;
    padding: 0;
    border: none;
}

/* Agent Steps Timeline in responses */
.agent-steps-timeline {
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    margin-top: 1rem;
    overflow: hidden;
}

.timeline-header {
    padding: 0.6rem 0.85rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    background: rgba(0,0,0,0.1);
}

.timeline-header:hover {
    color: var(--text-primary);
}

.timeline-body {
    padding: 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    border-top: 1px solid var(--border-glass);
}

.timeline-step {
    display: flex;
    gap: 0.75rem;
}

.timeline-badge {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    flex-shrink: 0;
}

.timeline-badge.done {
    background: rgba(34, 197, 94, 0.15);
    color: var(--accent-green);
    border: 1px solid var(--accent-green);
}
.timeline-badge.running {
    background: rgba(234, 179, 8, 0.15);
    color: #EAB308;
    border: 1px solid #EAB308;
}
.timeline-badge.error {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-rose);
    border: 1px solid var(--accent-rose);
}

.timeline-content {
    font-size: 0.75rem;
}

.timeline-agent {
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.02em;
}

.timeline-action {
    color: var(--text-secondary);
    margin-top: 0.1rem;
}

.timeline-details {
    font-family: var(--font-mono);
    color: var(--text-muted);
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border-glass);
    padding: 0.4rem;
    border-radius: var(--radius-sm);
    margin-top: 0.35rem;
    word-break: break-all;
    font-size: 0.7rem;
}

/* Metadata tag lists */
.metadata-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.75rem;
}

.meta-tag {
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.meta-tag.sql {
    cursor: pointer;
    background: rgba(163, 230, 53, 0.05);
    border-color: rgba(163, 230, 53, 0.2);
    color: var(--accent-blue);
}
.meta-tag.sql:hover {
    background: rgba(163, 230, 53, 0.12);
    border-color: var(--accent-blue);
}

/* Typing Indicator animation */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 0.4rem 0.2rem;
}
.typing-dot {
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite ease-in-out both;
}
.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

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

/* Chat Input control footer */
.chat-input-wrapper {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-glass);
    padding: 1rem 10% 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.chat-input-area {
    display: flex;
    align-items: flex-end;
    background: var(--bg-primary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 0.6rem 0.85rem;
    gap: 0.5rem;
}

.chat-input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    resize: none;
    flex-grow: 1;
    max-height: 150px;
    line-height: 1.5;
}

.send-btn {
    background: var(--accent-grad);
    color: var(--bg-primary);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.send-btn:hover {
    opacity: 0.9;
    transform: scale(1.05);
}

.chat-disclaimer {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

#system-status-indicator.status-ready { color: var(--text-secondary); }
#system-status-indicator.status-running { color: var(--accent-blue); animation: pulseText 1.5s infinite; }
#system-status-indicator.status-error { color: var(--accent-rose); }

@keyframes pulseText {
    0% { opacity: 0.8; }
    50% { opacity: 0.4; }
    100% { opacity: 0.8; }
}

/* ==========================================================================
   RIGHT PANEL: UTILITIES
   ========================================================================== */
.right-panel {
    width: 420px;
    flex-shrink: 0;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-glass);
    display: flex;
    flex-direction: column;
    z-index: 85;
    margin-right: -421px; /* Hidden by default on desktop layout */
    transition: margin-right var(--transition-normal), transform var(--transition-normal);
}

.right-panel.open {
    margin-right: 0;
}

.panel-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-bottom: 1px solid var(--border-glass);
    background: rgba(0, 0, 0, 0.15);
}

.tab-btn {
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.85rem;
    padding: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
    background: var(--bg-secondary);
}

.panel-scroll-area {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1.25rem;
}

.tab-content {
    display: none;
    flex-direction: column;
    gap: 1rem;
    animation: fadeIn var(--transition-fast) ease;
}

.tab-content.active {
    display: flex;
}

.section-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* SQL tab components */
.workbench-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.5rem;
}

.timer-tag {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
}

.sql-box {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sql-textarea {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.5;
    outline: none;
    resize: vertical;
}

.sql-textarea:focus {
    border-color: var(--accent-blue);
}

.execute-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-glass);
    color: var(--accent-blue);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.85rem;
    padding: 0.6rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

.execute-btn:hover {
    border-color: var(--accent-blue);
    background: rgba(163, 230, 53, 0.05);
}

.sql-results-wrapper {
    flex-grow: 1;
    overflow-x: auto;
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    min-height: 200px;
}

/* Custom Results Table styling */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.75rem;
    text-align: left;
}

.data-table th, .data-table td {
    padding: 0.6rem 0.85rem;
    border-bottom: 1px solid var(--border-glass);
}

.data-table th {
    background: rgba(0, 0, 0, 0.25);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-weight: 700;
    position: sticky;
    top: 0;
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Vector search elements */
.vector-search-box {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.vector-input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 0.65rem 0.75rem;
    color: var(--text-primary);
    outline: none;
    font-size: 0.8rem;
}

.vector-input:focus {
    border-color: var(--accent-blue);
}

.vector-results-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.vector-result-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    animation: fadeIn var(--transition-fast) ease;
}

.vector-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.vector-roll {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--accent-blue);
    font-size: 0.8rem;
}

.vector-distance {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 600;
}

.vector-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    text-align: center;
    padding: 3rem 1.5rem;
    gap: 0.5rem;
    font-size: 0.8rem;
}

.empty-state i {
    font-size: 1.75rem;
    margin-bottom: 0.25rem;
}

/* ==========================================================================
   TOASTS & GENERAL UTILITIES
   ========================================================================== */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 1000;
}

.toast {
    background: var(--bg-secondary);
    border-left: 4px solid var(--accent-blue);
    border-right: 1px solid var(--border-glass);
    border-top: 1px solid var(--border-glass);
    border-bottom: 1px solid var(--border-glass);
    color: var(--text-primary);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    animation: slideInRight 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 250px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Progress indicator bar on top */
.progress-bar-wrap {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 3px;
    z-index: 1001;
    background: transparent;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--accent-grad);
    transition: width 0.4s ease;
}

.progress-bar.indeterminate {
    width: 100%;
    animation: indeterminateLoading 1.5s infinite ease-in-out;
}

@keyframes indeterminateLoading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

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

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

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ==========================================================================
   RESPONSIVE LAYOUTS
   ========================================================================== */
@media (max-width: 1024px) {
    .right-panel {
        position: fixed;
        right: 0;
        top: var(--header-height);
        bottom: 0;
        width: 100%;
        max-width: 420px;
        transform: translateX(100%);
        margin-right: 0; /* Reset desktop margin-right spacing */
        box-shadow: var(--shadow-lg);
    }
    .right-panel.open {
        transform: translateX(0);
    }
}

@media (max-width: 768px) {
    /* Lower DPI / Zoom scaling on screens <= 768px */
    html {
        font-size: 13px;
    }
    
    header {
        display: flex;
        justify-content: space-between;
        padding: 0 0.85rem;
    }

    .header-left {
        gap: 0.4rem;
    }

    .logo-area {
        gap: 0.35rem;
        font-size: 1.05rem;
    }

    .logo-img {
        height: 24px;
    }
    
    .sidebar-toggle {
        display: block;
    }
    
    .sidebar-left {
        position: fixed;
        left: 0;
        top: var(--header-height);
        bottom: 0;
        width: 100%;
        max-width: 280px;
        transform: translateX(-100%);
        margin-left: 0; /* Reset desktop margin-left spacing */
        box-shadow: var(--shadow-lg);
    }
    
    .sidebar-left.open {
        transform: translateX(0);
    }
    
    .sidebar-backdrop.open {
        display: block;
    }
    
    .header-center {
        display: none; /* Hide API input on mobile header to save space */
    }
    
    .messages-container {
        padding: 1.5rem 1rem 3rem;
    }
    
    .chat-input-wrapper {
        padding: 0.75rem 1rem 1rem;
    }
    
    .suggestions-grid {
        grid-template-columns: 1fr;
    }
}