/**
 * SAGE - Layout and Component Styles
 * Contains grid system, responsive design, component layouts, and UI elements
 */

/* App Layout Container */
.app-layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: var(--container-padding);
    gap: var(--container-gap);
}

/* Header Section - Clean Branding Layout */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    margin-bottom: 0.5rem;
    background: var(--surface);
    border-radius: 1rem;
    box-shadow: 0 4px 16px rgba(60, 72, 88, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 50;
}

/* Restore solid header background */
.app-header {
    background: var(--surface);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-text {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

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

/* Theme Toggle */
.theme-toggle {
    background: var(--button-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
}

.theme-toggle:hover {
    background: var(--button-hover);
    border-color: var(--border-hover);
    transform: scale(1.05);
}

.theme-icon {
    transition: transform 0.3s ease;
}

.theme-toggle:hover .theme-icon {
    transform: rotate(20deg);
}

/* Mobile: Same clean layout */
@media (max-width: 1023px) {
    .app-header {
        padding: 1.5rem;
    }
}

/* Main Content Area */
.app-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--container-gap);
    max-width: var(--main-max-width);
    width: 100%;
    margin: 0 auto;
}

/* Content Sections */
.main-container {
    background: var(--surface);
    border-radius: 1.5rem;
    box-shadow: 0 8px 32px rgba(60, 72, 88, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
    width: 100%;
    position: relative;
    /* Removed z-index: 10 to fix button click issues */
}

/* Config Panel Styling */
.config-panel {
    border-right: 1px solid rgba(248, 113, 113, 0.2);
}

.config-panel h2 {
    color: var(--accent);
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

/* Config Content Container */
.config-content {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* Config Section Cards */
.config-section {
    background: var(--surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.25rem;
    transition: all 0.2s ease;
    position: relative;
    z-index: 1;
}

.config-section:hover {
    border-color: rgba(248, 113, 113, 0.3);
}

/* Primary Section (Question Setup) */
.config-section-primary {
    border-color: rgba(248, 113, 113, 0.4);
    box-shadow: 0 2px 8px rgba(248, 113, 113, 0.1);
}

/* Compact Section (Cost Widget) */
.config-section-compact {
    padding: 1rem;
}

/* Section Titles */
.section-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 1rem 0;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

/* Form Groups */
.form-group {
    margin-bottom: 1rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

/* Generate Button Container */
.generate-button-container {
    margin-top: 0.5rem;
}

/* Collapsible Section Styling */
.collapsible-section {
    cursor: default;
}

.collapsible-section summary {
    cursor: pointer;
    user-select: none;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    margin: -0.5rem -0.75rem 0 -0.75rem;
    border-radius: 0.5rem;
    transition: background-color 0.2s ease;
}

.collapsible-section summary::-webkit-details-marker {
    display: none;
}

.collapsible-section summary:hover {
    background: var(--button-hover);
}

.section-summary-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.section-summary-title {
    flex: 1;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.section-summary-chevron {
    font-size: 0.75rem;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.collapsible-section[open] .section-summary-chevron {
    transform: rotate(180deg);
}

.section-content {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    animation: slideDown 0.3s ease-out;
}

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

/* Improved Label Sizing */
.config-section label {
    font-size: 0.9rem;
}

.config-section .text-lg {
    font-size: 0.95rem;
}

.config-section .text-base {
    font-size: 0.9rem;
}

/* Questions Canvas Styling */
.questions-canvas {
    min-height: 60vh;
    display: flex;
    flex-direction: column;
}

.questions-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

/* Empty State Styling */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    text-align: center;
    padding: 2rem;
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    opacity: 0.8;
    animation: floatIcon 3s ease-in-out infinite;
}

@keyframes floatIcon {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.empty-state-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.empty-state-text {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 400px;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.empty-state-hint {
    background: var(--surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1.25rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.hint-label {
    font-weight: 600;
    color: var(--accent);
    margin-right: 0.5rem;
}

.empty-state-hint kbd {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    padding: 0.125rem 0.5rem;
    font-family: monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

#questionsPlaceholder {
    text-align: center;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Sidebar Content Styling */
.sidebar-section {
    background: var(--surface);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 4px 16px rgba(60, 72, 88, 0.15);
}

/* Mobile: Hide sidebar by default */
@media (max-width: 1023px) {
    .sidebar {
        display: none;
    }
}

/* Footer Styling */
.footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: auto;
}

/* Header Logo */
.logo {
    width: 45px;
    height: 45px;
    margin: 0;
    display: block;
    border-radius: 50%;
    border: 2px solid #f87171;
    background: #23272f;
    object-fit: cover;
    box-shadow: 0 2px 8px rgba(60, 72, 88, 0.10);
    flex-shrink: 0;
}

/* Header Title */
.sage-title {
    color: var(--text-primary);
    font-family: 'Georgia', serif;
    font-size: 1.4rem;
    font-weight: 900;
    margin: 0;
    letter-spacing: 0.5px;
    line-height: 1.1;
}

/* Title Row with Beta Badge */
.title-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Beta Badge */
.beta-badge {
    background: linear-gradient(135deg, #F59E0B, #F97316);
    color: #FFFFFF;
    font-family: 'Georgia', serif;
    font-size: 0.5rem;
    font-weight: 700;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.2);
    cursor: help;
    transition: all 0.2s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.beta-badge:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(245, 158, 11, 0.3);
}

/* Header Divider */
.divider {
    width: 25px;
    height: 2px;
    background: linear-gradient(90deg, #ef4444 0%, #f87171 100%);
    border-radius: 1px;
    margin: 0;
}

/* Header Subtitle */
.full-name {
    color: var(--accent);
    font-family: 'Georgia', serif;
    font-size: 0.7rem;
    margin: 0;
    font-weight: normal;
    letter-spacing: 0.2px;
    line-height: 1.1;
}

.full-name .em {
    color: var(--accent-hover);
    font-weight: bold;
    font-size: 1.15em;
    font-family: 'Georgia', serif;
    margin-right: 2px;
}

/* Form Elements */
.subtitle-edu {
    color: var(--text-secondary);
    font-size: 1.1rem;
    text-align: center;
    margin-bottom: 2.2rem;
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    letter-spacing: 0.2px;
}

label {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1.08rem;
}

input[type="text"], input[type="password"], textarea, select {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    padding: 0.85rem 1.1rem;
    border-radius: 0.85rem;
    width: 100%;
    color: var(--text-primary);
    margin-bottom: 0.7rem;
    font-size: 1.08rem;
    transition: border-color 0.2s;
}

input:focus, textarea:focus, select:focus {
    border-color: var(--accent);
    outline: none;
}

/* Checkbox styling */
input[type="checkbox"] {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    width: 1rem;
    height: 1rem;
    cursor: pointer;
    margin: 0;
    transition: all 0.2s ease;
    accent-color: var(--accent);
}

input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
}

input[type="checkbox"]:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Force new questions label */
.force-new-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    margin-bottom: 0;
}

.force-new-label:hover {
    color: var(--text-primary);
}

.action-btn {
    background: linear-gradient(90deg, #ef4444 0%, #f87171 100%);
    color: #fff;
    padding: 0.7rem 1.5rem;
    border-radius: 0.7rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
    box-shadow: 0 2px 8px rgba(60, 72, 88, 0.10);
}

.action-btn:hover {
    background: linear-gradient(90deg, #f87171 0%, #ef4444 100%);
    transform: translateY(-2px) scale(1.04);
}

.action-btn:focus {
    outline: 2px solid #f87171;
    outline-offset: 2px;
}

.api-key-container {
    /* API key now styled by parent .config-section */
    font-size: 0.95rem;
}

/* Question Cards */
.question-item {
    background: var(--surface);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    padding: 1.15rem;
    margin-bottom: 1.2rem;
    box-shadow: 0 2px 8px var(--shadow-color);
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    color: var(--text-primary);
}

.answer-content {
    background: var(--surface-elevated);
    border-left: 4px solid var(--accent);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
    display: none;
    color: var(--text-primary);
}

.latex-view {
    font-family: 'Courier New', monospace;
    background: var(--surface-elevated);
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-top: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
    display: none;
    overflow-x: auto;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.math-rendered {
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    overflow-x: auto;
    line-height: 1.6;
}

.math-rendered .katex-display {
    margin: 1em 0;
    overflow-x: auto;
    overflow-y: hidden;
}

.math-rendered .katex {
    font-size: 1em;
}

/* Loading Components */
.math-spinner {
    display: inline-flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1rem;
}

.math-symbol {
    font-size: 2rem;
    color: #f87171;
    animation: mathFloat 2s ease-in-out infinite;
    opacity: 0.7;
}

.math-symbol:nth-child(1) { animation-delay: 0s; }
.math-symbol:nth-child(2) { animation-delay: 0.3s; }
.math-symbol:nth-child(3) { animation-delay: 0.6s; }
.math-symbol:nth-child(4) { animation-delay: 0.9s; }

@keyframes mathFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 0.7; }
    25% { transform: translateY(-10px) rotate(5deg); opacity: 1; }
    50% { transform: translateY(-15px) rotate(-5deg); opacity: 0.9; }
    75% { transform: translateY(-5px) rotate(3deg); opacity: 1; }
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: rgba(248, 113, 113, 0.2);
    border-radius: 2px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #ef4444, #f87171, #ef4444);
    background-size: 200% 100%;
    animation: progressSlide 2s linear infinite;
    width: 0%;
    transition: width 0.3s ease;
}

@keyframes progressSlide {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.loading-message {
    color: #e5e7eb;
    font-size: 1rem;
    text-align: center;
    margin-top: 0.5rem;
    min-height: 1.5rem;
}

/* Recently Used Topics Section */
.recent-topics-label {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
    display: block;
}

.recent-topic-btn {
    background: var(--surface-elevated) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 0.5rem;
    padding: 0.75rem;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-primary) !important;
    overflow: hidden;
    width: 100%;
    min-height: 60px;
}

.recent-topic-btn:hover {
    background: var(--button-hover) !important;
    border-color: var(--accent) !important;
}

.recent-topic-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary) !important;
    margin-bottom: 0.25rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 100%;
}

.recent-topic-meta {
    font-size: 0.75rem;
    color: var(--text-muted) !important;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 100%;
}

/* Recommended Topics Section */
.recommendation-topics-label {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
    display: block;
}

.recommendation-btn {
    background: var(--surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-primary);
    min-height: 80px;
}

.recommendation-btn:hover {
    background: var(--button-hover);
    border-color: var(--accent);
}

.recommendation-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.recommendation-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.recommendation-difficulty {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    background: var(--accent);
    color: white;
    flex-shrink: 0;
}

.recommendation-reason {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: right;
}

/* Autocomplete and example topics styling */
.autocomplete-container {
    position: relative;
}

.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 0.85rem 0.85rem;
    max-height: 200px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
}

.autocomplete-item {
    padding: 0.75rem 1.1rem;
    cursor: pointer;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s;
}

.autocomplete-item:hover, .autocomplete-item.selected {
    background: var(--button-hover);
    color: var(--accent);
}

.autocomplete-item:last-child {
    border-bottom: none;
}

.example-topics {
    margin-bottom: 1rem;
}

.example-topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.example-topic {
    background: var(--button-bg);
    border: 1px solid var(--border-color);
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-primary);
    transition: all 0.2s;
    text-align: center;
}

.example-topic:hover {
    background: var(--button-hover);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}

.difficulty-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    font-style: italic;
}

/* Question navigation */
.question-navigator {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--button-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
}

.nav-button {
    background: var(--button-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.875rem;
    min-width: 80px;
}

.nav-button:hover:not(:disabled) {
    background: var(--button-hover);
    border-color: var(--accent);
    color: var(--accent);
}

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

.question-counter {
    color: var(--accent);
    font-weight: 600;
    font-size: 1rem;
}

.question-item {
    display: none;
}

.question-item.active {
    display: block;
}

/* Responsive Breakpoints */
@media (min-width: 768px) {
    :root {
        --container-padding: 1.5rem;
    }
    .main-container {
        padding: 2.5rem;
    }
    
    /* Mobile: Larger sizes */
    .logo {
        width: 55px;
        height: 55px;
    }
    
    .sage-title {
        font-size: 1.6rem;
    }
    
    .divider {
        width: 35px;
        height: 3px;
        margin: 0.2rem 0;
    }
    
    .full-name {
        font-size: 0.85rem;
    }
}

@media (min-width: 1024px) {
    :root {
        --container-padding: 2rem;
    }
    
    .app-main {
        grid-template-columns: var(--config-panel-width) var(--questions-canvas-width);
        max-width: none;
        width: 100%;
        max-width: 1400px;
    }
    
    .config-panel {
        padding: 2rem;
    }
    
    .questions-canvas {
        padding: 2rem;
    }
    
    /* Reset to desktop sizes */
    .logo {
        width: 45px;
        height: 45px;
    }
    
    .sage-title {
        font-size: 1.4rem;
    }
    
    .divider {
        width: 25px;
        height: 2px;
        margin: 0;
    }
    
    .full-name {
        font-size: 0.7rem;
    }
}

@media (min-width: 1200px) {
    :root {
        --config-panel-width: 400px;
        --container-gap: 2.5rem;
    }
}