/* ============================================
   Modern SaaS UI - Clean & Professional
   ============================================ */

/* ============================================
   CSS VARIABLES - THEME SYSTEM
   ============================================ */

:root {
    /* Light theme (default) */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-elevated: #ffffff;

    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-tertiary: #6b7280;
    --text-muted: #9ca3af;

    --border-primary: #e5e7eb;
    --border-secondary: #d1d5db;

    --accent-primary: #3b82f6;
    --accent-hover: #2563eb;
    --accent-light: #dbeafe;
    --accent-dark: #1d4ed8;

    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-full: 9999px;

    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-elevated: #1e293b;

    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-muted: #64748b;

    --border-primary: #334155;
    --border-secondary: #475569;

    --accent-light: #1e3a5f;

    --success-light: #064e3b;
    --warning-light: #78350f;
    --danger-light: #7f1d1d;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background var(--transition-base), color var(--transition-base);
}

/* ============================================
   THEME TOGGLE
   ============================================ */

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--border-primary);
    color: var(--text-primary);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-toggle .icon-sun {
    display: block;
}

.theme-toggle .icon-moon {
    display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: block;
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* ============================================
   HEADER
   ============================================ */

header {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg) var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

header h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.025em;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* User Info in Header */
.user-info {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-primary);
}

.user-info span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.user-info strong {
    font-weight: 600;
    color: var(--accent-primary);
}

/* ============================================
   MAIN CONTENT - TWO PANEL LAYOUT
   ============================================ */

.main-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
}

/* ============================================
   PANELS / CARDS
   ============================================ */

.panel {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.panel h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.panel h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

/* ============================================
   UPLOAD AREA
   ============================================ */

.upload-area {
    border: 2px dashed var(--border-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    background: var(--bg-secondary);
    transition: all var(--transition-base);
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--accent-primary);
    background: var(--accent-light);
}

.upload-area.dragover {
    border-color: var(--accent-primary);
    background: var(--accent-light);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-muted);
}

.upload-area p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.upload-hint {
    font-size: 0.875rem !important;
    color: var(--text-muted) !important;
}

/* ============================================
   DOCUMENTS LIST
   ============================================ */

.documents-section {
    margin-top: var(--spacing-xl);
}

.documents-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-height: 400px;
    overflow-y: auto;
    padding: var(--spacing-xs);
}

/* Scrollbar */
.documents-list::-webkit-scrollbar {
    width: 6px;
}

.documents-list::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
}

.documents-list::-webkit-scrollbar-thumb {
    background: var(--border-secondary);
    border-radius: var(--radius-full);
}

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

.document-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.document-item:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
}

.document-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.document-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.shared-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--success-light);
    color: var(--success);
    font-size: 0.625rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.no-documents {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-xl);
    font-style: italic;
}

/* ============================================
   CHAT INTERFACE
   ============================================ */

.chat-panel {
    display: flex;
    flex-direction: column;
    height: 700px;
}

.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.messages-container::-webkit-scrollbar {
    width: 6px;
}

.messages-container::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
}

.messages-container::-webkit-scrollbar-thumb {
    background: var(--border-secondary);
    border-radius: var(--radius-full);
}

.welcome-message {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
}

.welcome-message h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.welcome-message p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Message Bubbles */
.message {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    max-width: 85%;
}

.message.user {
    align-self: flex-end;
}

.message.assistant {
    align-self: flex-start;
}

.message-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.message.user .message-label {
    text-align: right;
    color: var(--accent-primary);
}

.message.assistant .message-label {
    color: var(--success);
}

.message-content {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    line-height: 1.6;
    box-shadow: var(--shadow-sm);
}

.message.user .message-content {
    background: var(--accent-primary);
    color: white;
    border-bottom-right-radius: var(--radius-sm);
}

.message.assistant .message-content {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-primary);
    border-bottom-left-radius: var(--radius-sm);
}

.message-content strong {
    font-weight: 600;
    color: inherit;
}

.message-content ul {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.message-content li {
    margin-bottom: var(--spacing-xs);
}

.message-content .text-header {
    font-weight: 600;
    color: var(--accent-primary);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.message-content .text-header:first-child {
    margin-top: 0;
}

.message-sources {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-primary);
}

.message-sources h4 {
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.source-item {
    background: var(--bg-tertiary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
    font-size: 0.8125rem;
    border-left: 3px solid var(--success);
}

.source-item:hover {
    background: var(--border-primary);
}

.source-filename {
    font-weight: 600;
    color: var(--success);
    margin-bottom: 4px;
}

.source-text {
    color: var(--text-muted);
    font-style: italic;
    line-height: 1.4;
}

.loading-message {
    align-self: flex-start;
    max-width: 85%;
}

.loading-message .message-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
}

.loading-dots {
    display: flex;
    gap: 4px;
}

.loading-dots span {
    width: 6px;
    height: 6px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: loadingPulse 1.4s infinite ease-in-out both;
}

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

@keyframes loadingPulse {
    0%, 80%, 100% { opacity: 0.4; transform: scale(0.8); }
    40% { opacity: 1; transform: scale(1); }
}

/* ============================================
   QUERY INPUT
   ============================================ */

.query-input-section {
    border-top: 1px solid var(--border-primary);
    padding-top: var(--spacing-md);
}

.llm-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
}

.llm-selector label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

.provider-select {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.provider-select:hover {
    border-color: var(--border-secondary);
}

.provider-select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.provider-select option {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.model-display {
    font-size: 0.75rem;
    color: var(--accent-primary);
    background: var(--accent-light);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-family: 'Monaco', 'Consolas', monospace;
    font-weight: 500;
    white-space: nowrap;
}

.input-group {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-end;
}

#queryInput {
    flex: 1;
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    resize: none;
    transition: all var(--transition-fast);
}

#queryInput:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-light);
}

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

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-secondary);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.send-icon {
    font-size: 1rem;
}

/* ============================================
   LOGIN PAGE
   ============================================ */

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
}

.login-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    width: 100%;
}

.login-card h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    text-align: center;
    color: var(--text-primary);
}

.login-card .subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input {
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-size: 1rem;
    color: var(--text-primary);
    font-family: inherit;
    transition: all var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.login-form .btn {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-md);
    font-size: 1rem;
    justify-content: center;
}

.error-message {
    background: var(--danger-light);
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

.success-message {
    background: var(--success-light);
    border: 1px solid var(--success);
    color: var(--success);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

/* Request Login Link on Login Page */
.request-login-link {
    margin-top: var(--spacing-lg);
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-primary);
}

.request-login-link p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.request-login-link .btn-secondary {
    display: inline-block;
    text-decoration: none;
}

/* Login Link (Back to login) */
.login-link {
    margin-top: var(--spacing-lg);
    text-align: center;
}

.login-link a {
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.875rem;
}

.login-link a:hover {
    text-decoration: underline;
}

/* CAPTCHA styles for request-login */
.captcha-group .captcha-challenge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
}

.captcha-group .captcha-challenge span {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary);
}

.btn-refresh-captcha {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 4px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-refresh-captcha:hover {
    color: var(--accent-primary);
    background: var(--accent-light);
}

/* Textarea for reason field */
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: inherit;
    resize: vertical;
    min-height: 80px;
    transition: all var(--transition-fast);
}

.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-group textarea::placeholder {
    color: var(--text-muted);
}

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ============================================
   LOADING OVERLAY
   ============================================ */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    z-index: 9999;
    transition: opacity var(--transition-base);
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-overlay .spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-primary);
    border-top-color: var(--accent-primary);
}

.loading-overlay p {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.hidden {
    display: none !important;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .chat-panel {
        height: 500px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }

    header {
        padding: var(--spacing-md);
    }

    header h1 {
        font-size: 1.5rem;
    }

    .panel {
        padding: var(--spacing-lg);
    }

    .message {
        max-width: 95%;
    }

    .login-card {
        padding: var(--spacing-xl);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .btn,
    .upload-area,
    .query-input-section,
    .theme-toggle {
        display: none;
    }
}

/* ============================================
   LANDING PAGE - TOOL SELECTION
   ============================================ */

.landing-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
}

.landing-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.landing-header h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.landing-header .subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

.landing-header .btn-logout {
    position: absolute;
    top: 0;
    right: -120px;
}

.landing-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    position: absolute;
    top: 0;
    right: -180px;
}

.tool-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    max-width: 800px;
    width: 100%;
}

.tool-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.tool-card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.tool-icon {
    width: 64px;
    height: 64px;
    background: var(--accent-light);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--accent-primary);
}

.tool-icon svg {
    width: 32px;
    height: 32px;
}

.tool-card h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.tool-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.tool-badge {
    background: var(--accent-light);
    color: var(--accent-primary);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}

/* Admin card variant */
.admin-card .tool-icon {
    background: var(--warning-light);
    color: var(--warning);
}

.admin-badge {
    background: var(--warning-light) !important;
    color: var(--warning) !important;
}

/* ============================================
   LLM COMPARISON PAGE
   ============================================ */

.llm-compare-container {
    max-width: 1400px;
}

.llm-compare-container header {
    margin-bottom: var(--spacing-lg);
}

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

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-left h1 {
    font-size: 1.5rem;
    margin: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.back-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.back-link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.glass-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.llm-input-section {
    margin-bottom: var(--spacing-lg);
}

.llm-input-section textarea {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    min-height: 100px;
    transition: all var(--transition-fast);
}

.llm-input-section textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.llm-input-section textarea::placeholder {
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: var(--spacing-md);
}

.llm-results {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.llm-result-card {
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-primary);
    margin-bottom: var(--spacing-md);
}

.result-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.model-badge {
    background: var(--accent-light);
    color: var(--accent-primary);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 500;
}

.result-content {
    flex: 1;
    overflow-y: auto;
    padding-right: var(--spacing-sm);
}

.result-content .placeholder {
    color: var(--text-muted);
    font-style: italic;
}

.result-content .loading-text {
    color: var(--accent-primary);
}

.result-content .error-text {
    color: var(--danger);
}

.result-content .response-text {
    line-height: 1.7;
    color: var(--text-secondary);
}

.result-content .response-text p {
    margin-bottom: var(--spacing-sm);
}

.result-footer {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-primary);
    margin-top: var(--spacing-md);
}

.token-info {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Provider card accents */
.anthropic-card {
    border-top: 3px solid #d97706;
}

.openrouter-card {
    border-top: 3px solid #10b981;
}

/* ============================================
   RESPONSIVE - LANDING & LLM COMPARE
   ============================================ */

@media (max-width: 1024px) {
    .tool-cards {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .landing-header .btn-logout,
    .landing-actions {
        position: static;
        margin-top: var(--spacing-md);
    }

    .llm-results {
        grid-template-columns: 1fr;
    }

    .llm-result-card {
        min-height: 300px;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .header-left {
        flex-direction: column;
    }

    .header-right {
        justify-content: center;
    }

    .landing-header h1 {
        font-size: 1.5rem;
    }
}