/* Modern Dark Theme - LLM Reasoning Router */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.05);

    --border-color: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.12);

    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);

    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --accent-cyan: #06b6d4;

    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-green: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --gradient-orange: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.15);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --sidebar-width: 280px;
    --analysis-height: 200px;
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    overflow-y: auto;
}

.sidebar-header {
    margin-bottom: 32px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.logo-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-weight: 700;
    font-size: 16px;
    letter-spacing: -0.02em;
}

.logo-subtitle {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Section Titles */
.section-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

/* Stats Section */
.stats-section {
    margin-bottom: 32px;
}

.stats-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.stat-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
}

.stat-card.highlight {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.2);
}

.stat-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon svg {
    width: 18px;
    height: 18px;
}

.requests-icon {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
}

.fast-icon {
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent-orange);
}

.complex-icon {
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent-purple);
}

.savings-icon {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 18px;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
}

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

/* Info Section - Steps */
.info-section {
    margin-bottom: 32px;
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.step {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
}

.step-num {
    width: 22px;
    height: 22px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

/* Sidebar Footer */
.sidebar-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 11px;
    color: var(--text-muted);
    text-align: center;
}

/* Main Content */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-primary);
}

/* Analysis Panel */
.analysis-panel {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
}

.analysis-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.analysis-header h2 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

.model-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 50%;
}

.model-badge.fast .badge-dot {
    background: var(--accent-green);
    box-shadow: 0 0 8px var(--accent-green);
}

.model-badge.complex .badge-dot {
    background: var(--accent-purple);
    box-shadow: 0 0 8px var(--accent-purple);
}

.analysis-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Metrics Row */
.metrics-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
}

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.metric-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-value {
    font-size: 20px;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
}

.progress-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.5s ease, background 0.3s ease;
}

.progress-fill.complexity {
    background: var(--gradient-primary);
}

.progress-fill.complexity.low {
    background: var(--accent-green);
}

.progress-fill.complexity.medium {
    background: var(--accent-orange);
}

.progress-fill.complexity.high {
    background: var(--accent-red);
}

.progress-fill.quality {
    background: var(--accent-green);
}

.progress-fill.quality.poor {
    background: var(--accent-red);
}

.progress-fill.quality.fair {
    background: var(--accent-orange);
}

.metric-level {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: capitalize;
}

/* Signals Row */
.signals-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.signals-label {
    font-size: 12px;
    color: var(--text-muted);
}

.signals-container {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.signal-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 11px;
    color: var(--text-secondary);
}

.signal-tag.reasoning_keyword {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: #f87171;
}

.signal-tag.code_block {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: #60a5fa;
}

.signal-tag.math_expression {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: #fbbf24;
}

.signal-tag.multipart_question {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: #34d399;
}

.signal-tag.length {
    background: rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.3);
    color: #a78bfa;
}

.no-signals {
    font-size: 12px;
    color: var(--text-muted);
    font-style: italic;
}

/* Model Info */
.model-info {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.model-detail {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.detail-label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-value {
    font-size: 13px;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-primary);
}

/* Reasoning Box */
.reasoning-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-blue);
    border-radius: var(--radius-sm);
    padding: 12px;
}

.reasoning-label {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}

.reasoning-box p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Chat Area */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

/* Welcome Message */
.welcome-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
    max-width: 600px;
    margin: 0 auto;
}

.welcome-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    box-shadow: var(--shadow-glow);
}

.welcome-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.welcome-message h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-message > p {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 32px;
}

.sample-prompts {
    width: 100%;
}

.samples-label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.sample-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.sample-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sample-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.sample-icon {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.sample-icon.simple {
    background: var(--accent-green);
}

.sample-icon.medium {
    background: var(--accent-orange);
}

.sample-icon.complex {
    background: var(--accent-red);
}

/* Message Bubbles */
.message {
    margin-bottom: 20px;
    animation: fadeIn 0.3s ease;
}

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

.message-user {
    display: flex;
    justify-content: flex-end;
}

.message-user .message-content {
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-lg) var(--radius-lg) 4px var(--radius-lg);
    max-width: 70%;
    padding: 12px 16px;
}

.message-assistant {
    display: flex;
    justify-content: flex-start;
}

.message-assistant .message-content {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-lg) var(--radius-lg) var(--radius-lg) 4px;
    max-width: 85%;
    padding: 16px 20px;
}

.message-content {
    font-size: 14px;
    line-height: 1.7;
    word-wrap: break-word;
}

.message-content pre {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px;
    margin: 12px 0;
    overflow-x: auto;
}

.message-content code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
}

.message-content p code {
    background: var(--bg-primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
}

/* Input Area */
.input-area {
    padding: 16px 24px 24px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.input-container {
    display: flex;
    gap: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 8px;
    transition: border-color 0.2s ease;
}

.input-container:focus-within {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

#prompt-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    padding: 8px 12px;
    resize: none;
    max-height: 150px;
    line-height: 1.5;
}

#prompt-input::placeholder {
    color: var(--text-muted);
}

#prompt-input:focus {
    outline: none;
}

.send-btn {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    flex-shrink: 0;
}

.send-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.send-btn:active {
    transform: scale(0.95);
}

.send-btn svg {
    width: 20px;
    height: 20px;
}

.input-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    padding: 0 4px;
}

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

.hint kbd {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2px 6px;
    font-family: inherit;
    font-size: 10px;
}

.clear-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 12px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.clear-btn:hover {
    background: var(--bg-card);
    color: var(--text-secondary);
    border-color: var(--border-light);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: fit-content;
}

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

.typing-indicator span:nth-child(1) { animation-delay: 0s; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
    0%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-6px); }
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 3px;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }

    .metrics-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .app {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        max-height: 200px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        overflow-x: auto;
    }

    .stats-grid {
        flex-direction: row;
        overflow-x: auto;
    }

    .stat-card {
        min-width: 140px;
    }

    .info-section {
        display: none;
    }

    .analysis-panel {
        padding: 12px 16px;
    }

    .model-info {
        gap: 16px;
    }

    .chat-messages {
        padding: 16px;
    }

    .welcome-message {
        padding: 40px 16px;
    }

    .sample-buttons {
        flex-direction: column;
    }

    .input-area {
        padding: 12px 16px 16px;
    }
}