/* ============================================================================
   APQR Agentic System - Modern UI Styles
   ============================================================================ */

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ============================================================================
   Header
   ============================================================================ */

.header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.logo i {
    font-size: 1.5rem;
}

.nav {
    display: flex;
    gap: 0.5rem;
}

.nav-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-light);
    cursor: pointer;
    border-radius: 0.5rem;
    transition: all 0.2s;
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-btn:hover {
    background: var(--bg);
    color: var(--text);
}

.nav-btn.active {
    background: var(--primary);
    color: white;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-light);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--secondary);
    animation: pulse 2s ease-in-out infinite;
}

.status-dot.online {
    background: var(--success);
}

.status-dot.offline {
    background: var(--danger);
    animation: none;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================================================
   Main Content
   ============================================================================ */

.main-content {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

.view {
    display: none;
}

.view.active {
    display: block;
}

.hero {
    text-align: center;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* ============================================================================
   Query Section
   ============================================================================ */

/* Query View Split Layout - ONLY for Query page */
#query-view .query-split-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Split screen on larger screens - ONLY for Query page */
@media (min-width: 1024px) {
    #query-view .query-split-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
        align-items: start;
    }
}

.query-section {
    background: var(--surface);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

/* Remove margin in split view - ONLY for Query page */
@media (min-width: 1024px) {
    #query-view .query-split-container .query-section {
        margin-bottom: 0;
    }
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: 0.75rem;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.2s;
}

.input-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.quick-queries {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.quick-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-light);
}

.quick-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quick-btn:hover {
    border-color: var(--primary);
    background: var(--primary-light);
    color: white;
}

/* ============================================================================
   Response Container
   ============================================================================ */

.response-container {
    background: var(--surface);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-top: 2rem;
    min-height: 400px;
}

/* Remove top margin in split view - ONLY for Query page */
@media (min-width: 1024px) {
    #query-view .query-split-container .response-container {
        margin-top: 0;
        position: sticky;
        top: 100px;
        max-height: calc(100vh - 150px);
        overflow-y: auto;
    }
}

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

.response-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text);
}

.response-content {
    line-height: 1.8;
    white-space: pre-wrap;
}

.progress-bar {
    margin-top: 1rem;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    animation: progress 1.5s ease-in-out infinite;
}

@keyframes progress {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

/* ============================================================================
   Buttons
   ============================================================================ */

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

.btn-primary:disabled {
    background: var(--secondary);
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--secondary);
    color: white;
}

.btn-secondary:hover {
    background: #475569;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ============================================================================
   Form Section
   ============================================================================ */

.form-section {
    background: var(--surface);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text);
}

.required {
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

/* Select dropdown styling */
.form-control select,
select.form-control {
    cursor: pointer;
    background-color: var(--surface);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 12px;
    padding-right: 2.5rem;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.form-control select:hover,
select.form-control:hover {
    border-color: var(--primary);
}

/* Optgroup styling */
.form-control optgroup {
    font-weight: 600;
    color: var(--text);
    font-style: normal;
    padding: 0.5rem 0;
}

.form-control option {
    padding: 0.5rem;
    color: var(--text);
}

.form-control option:first-child {
    color: var(--text-light);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Nested form groups (for year/month selects) */
.form-group .form-row .form-group {
    margin-bottom: 0;
}

/* Date period section styling */
.form-group > label:not(.form-group .form-row .form-group label) {
    margin-bottom: 0.75rem;
}

/* ============================================================================
   Result Container
   ============================================================================ */

.result-container {
    background: var(--surface);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-top: 2rem;
}

.success-message {
    text-align: center;
}

.success-message i {
    font-size: 4rem;
    color: var(--success);
    margin-bottom: 1rem;
}

.success-message h3 {
    color: var(--text);
    margin-bottom: 0.5rem;
}

.success-message p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.document-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* ============================================================================
   Documents List
   ============================================================================ */

.controls {
    margin-bottom: 2rem;
}

.documents-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.document-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    transition: all 0.2s;
    cursor: pointer;
}

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

.document-card h4 {
    margin-bottom: 0.5rem;
    color: var(--text);
}

.document-meta {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.document-actions {
    display: flex;
    gap: 0.5rem;
}

.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
    font-size: 1.125rem;
}

.loading i {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

/* ============================================================================
   About Section
   ============================================================================ */

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-card {
    background: var(--surface);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: transform 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
}

.feature-card i {
    color: var(--primary);
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--text);
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.system-info {
    background: var(--surface);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

.system-info h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text);
}

.architecture-diagram {
    max-width: 600px;
    margin: 0 auto;
}

.arch-layer {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.arch-box {
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
}

.arch-box.user {
    background: var(--primary-light);
    color: white;
}

.arch-box.orchestrator {
    background: var(--primary);
    color: white;
}

.arch-box.domain {
    background: #3b82f6;
    color: white;
}

.arch-box.sub {
    background: #60a5fa;
    color: white;
    font-size: 0.75rem;
}

.arch-box.compiler {
    background: var(--success);
    color: white;
}

.arch-box.response {
    background: #10b981;
    color: white;
}

.arch-arrow {
    text-align: center;
    font-size: 1.5rem;
    color: var(--text-light);
    padding: 0.5rem 0;
}

.version-info {
    text-align: center;
    padding: 2rem;
    background: var(--bg);
    border-radius: 0.75rem;
}

.version-info p {
    margin: 0.5rem 0;
    color: var(--text-light);
}

/* ============================================================================
   Footer
   ============================================================================ */

.footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
}

.footer p {
    margin: 0.25rem 0;
}

/* ============================================================================
   Responsive Design
   ============================================================================ */

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .nav {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .document-links {
        flex-direction: column;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}