/* Root Variables */
:root {
    /* Light Mode Colors */
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --secondary-color: #2ecc71;
    --secondary-dark: #27ae60;
    --accent-color: #9b59b6;
    --accent-dark: #8e44ad;
    --background-color: #f8f9fa;
    --surface-color: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Enhanced Typography */
    --font-heading: 'Montserrat', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --primary-color: #60a5fa;
    --primary-dark: #3b82f6;
    --secondary-color: #10b981;
    --secondary-dark: #059669;
    --accent-color: #c084fc;
    --accent-dark: #a855f7;
    --background-color: #111827;
    --surface-color: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #e5e7eb;
    --border-color: #374151;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.5);
}

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

/* Font imports */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&family=Montserrat:wght@500;600;700&display=swap');

body {
    font-family: var(--font-body);
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.5em;
    color: var(--text-primary);
}

code, pre {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1001;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--surface-color);
    border-radius: 2rem;
    padding: 0.35rem;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.theme-toggle-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    font-size: 1.2rem;
    border-radius: 50%;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.theme-toggle-icon.light-icon {
    background-color: var(--primary-color);
    color: white;
    transform: var(--theme-light-transform, scale(1));
    opacity: var(--theme-light-opacity, 1);
}

.theme-toggle-icon.dark-icon {
    background-color: transparent;
    transform: var(--theme-dark-transform, scale(0.8));
    opacity: var(--theme-dark-opacity, 0.5);
}

[data-theme="dark"] .theme-toggle-icon.light-icon {
    background-color: transparent;
    transform: scale(0.8);
    opacity: 0.5;
}

[data-theme="dark"] .theme-toggle-icon.dark-icon {
    background-color: var(--accent-color);
    color: white;
    transform: scale(1);
    opacity: 1;
}

/* Layout */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    background-color: var(--surface-color);
    padding: 1rem 2rem;
    box-shadow: var(--shadow-sm);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    font-size: 2rem;
    color: var(--primary-color);
}

.main-content {
    flex: 1;
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
    display: grid;
    gap: 2rem;
    grid-template-rows: auto minmax(0, 1fr);
}

/* Upload Panel */
.upload-panel {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    max-height: fit-content;
    overflow: hidden;
}

.upload-section {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.upload-container {
    border: 2px dashed rgba(52, 152, 219, 0.3);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.02) 0%, rgba(52, 152, 219, 0.08) 100%);
    position: relative;
    overflow: hidden;
}

.upload-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(52, 152, 219, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.upload-container:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 15px 30px -10px rgba(52, 152, 219, 0.15);
}

.upload-container:hover::before {
    opacity: 1;
}

.upload-icon-container {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: rgba(52, 152, 219, 0.1);
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.upload-container:hover .upload-icon-container {
    background-color: rgba(52, 152, 219, 0.2);
    transform: scale(1.1);
}

.upload-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.upload-container:hover .upload-icon {
    transform: translateY(-5px);
}

.upload-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.upload-subtext {
    font-size: 0.95rem;
    color: var(--text-secondary);
    max-width: 80%;
    margin: 0 auto;
}

/* Upload file particles */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--primary-color);
    opacity: 0;
}

.upload-container:hover .particles {
    opacity: 1;
}

@keyframes particleAnimation {
    0% { transform: translateY(0) scale(0); opacity: 0; }
    50% { opacity: 0.8; }
    100% { transform: translateY(-100px) scale(1); opacity: 0; }
}

/* Upload Progress Animations */
.upload-progress {
    width: 100%;
    height: 4px;
    margin-top: 1.5rem;
    background-color: rgba(52, 152, 219, 0.1);
    border-radius: 2px;
    overflow: hidden;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.upload-progress-bar {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    border-radius: 2px;
    transition: width 0.3s ease;
}

.upload-container.uploading .upload-progress {
    opacity: 1;
}

/* Dark Mode Adjustments */
[data-theme="dark"] .upload-container {
    border-color: rgba(96, 165, 250, 0.3);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.5) 0%, rgba(30, 41, 59, 0.8) 100%);
}

[data-theme="dark"] .upload-container::before {
    background: radial-gradient(circle at center, rgba(96, 165, 250, 0.15) 0%, transparent 70%);
}

[data-theme="dark"] .upload-icon-container {
    background-color: rgba(96, 165, 250, 0.15);
}

/* Model Selector */
.model-selector {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.model-label {
    font-weight: 500;
    color: var(--text-primary);
}

.select-wrapper {
    position: relative;
}

.select-wrapper select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    appearance: none;
    background-color: var(--surface-color);
    font-size: 1rem;
    color: var(--text-primary);
}

.select-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
}

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

/* Video Preview */
.video-preview {
    margin: 2rem 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: #000;
    position: relative;
    box-shadow: 0 15px 25px -5px rgba(0, 0, 0, 0.15),
                0 10px 10px -5px rgba(0, 0, 0, 0.05);
}

.video-preview video {
    width: 100%;
    object-fit: contain;
    display: block;
}

.video-preview::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 90px;
    background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 100%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-preview:hover::after {
    opacity: 1;
}

.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 10;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.video-preview:hover .video-controls {
    opacity: 1;
    transform: translateY(0);
}

.video-progress {
    flex: 1;
    height: 4px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
    cursor: pointer;
    position: relative;
}

.video-progress-bar {
    height: 100%;
    width: 0;
    background-color: var(--primary-color);
    border-radius: 2px;
    position: relative;
}

.video-progress-handle {
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: white;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.video-progress:hover .video-progress-handle {
    opacity: 1;
}

.video-control-button {
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.video-control-button:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.video-time {
    color: white;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    min-width: 50px;
    text-align: center;
}

.video-preview.playing .video-play-icon {
    display: none;
}

.video-preview:not(.playing) .video-pause-icon {
    display: none;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.primary-button, .secondary-button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

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

.primary-button:hover {
    background-color: var(--primary-dark);
}

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

.secondary-button:hover {
    background-color: var(--secondary-dark);
}

.primary-button:disabled, .secondary-button:disabled {
    background-color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.7;
}

/* Progress Bar */
.progress-container {
    background-color: var(--background-color);
    padding: 1.5rem;
    border-radius: var(--radius-md);
}

.status-text {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.progress-bar {
    height: 0.5rem;
    background-color: var(--border-color);
    border-radius: 999px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

/* Results Panel */
.results-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-height: calc(100vh - 600px);
    min-height: 500px;
    overflow: hidden;
}

.transcription-container, .topics-container {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    max-height: 100%;
    overflow: hidden;
}

h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.transcription-content, .topics-content {
    max-height: 500px;
    overflow-y: auto;
    padding: 1rem;
    background-color: var(--background-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    line-height: 1.7;
    height: 500px;
    overflow-y: auto;
    overflow-x: hidden;
    word-wrap: break-word;
}

/* Topic Styles */
.topic {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: var(--surface-color);
    border-left: 4px solid var(--primary-color);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    box-shadow: var(--shadow-sm);
}

.topic-header {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.topic-content {
    color: var(--text-secondary);
}

/* Mindmap Overlay */
.mindmap-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--background-color);
    z-index: 1000;
    display: none;
}

.mindmap-overlay.active {
    display: block;
}

.mindmap-content {
    display: flex;
    height: 100vh;
}

/* Video Section */
.video-section {
    width: 40%;
    padding: 2rem;
    background-color: var(--surface-color);
    border-right: 1px solid var(--border-color);
    display: none;
}

.video-section.active {
    display: block;
}

.video-player-container {
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: #000;
    margin-bottom: 1rem;
}

.video-player-container video {
    width: 100%;
    object-fit: contain;
    display: block;
}

.video-info {
    padding: 1rem;
    background-color: var(--background-color);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Mindmap Section */
.mindmap-section {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.mindmap-toolbar {
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 100;
    display: flex;
    gap: 0.5rem;
    background-color: var(--surface-color);
    padding: 0.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.tool-button {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius-sm);
    background-color: var(--surface-color);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.tool-button:hover {
    background-color: var(--background-color);
    color: var(--primary-color);
}

.tool-button.active {
    background-color: var(--primary-color);
    color: white;
}

.fullscreen-mindmap {
    width: 100%;
    height: calc(100vh - 4rem);
    position: relative;
    overflow: hidden;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .main-content {
        padding: 0 1rem;
    }
    
    .results-panel {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .upload-section {
        grid-template-columns: 1fr;
    }
    
    .mindmap-content {
        flex-direction: column;
    }
    
    .video-section {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .tool-button {
        padding: 0.5rem;
    }
    
    .tool-button span {
        display: none;
    }
}

@media (max-width: 480px) {
    .action-buttons {
        flex-direction: column;
    }
    
    .primary-button, .secondary-button {
        width: 100%;
        justify-content: center;
    }
}

/* Custom Mindmap Node Styles */
jmnode {
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-md);
    padding: 8px 12px !important;
    transition: all 0.2s ease;
}

jmnode:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* Improved Expand/Collapse Buttons */
jmexpander {
    width: 20px !important;
    height: 20px !important;
    border-radius: 50% !important;
    background-color: var(--surface-color) !important;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    display: flex !important;
    align-items: center;
    justify-content: center;
    font-size: 16px !important;
    font-weight: bold;
    color: var(--primary-color) !important;
    transition: all 0.2s ease;
    text-indent: -9999px !important;
    overflow: hidden !important;
    font-size: 0 !important;
}

jmexpander:hover {
    background-color: var(--primary-color) !important;
    color: white !important;
    transform: scale(1.1);
}

/* Custom icons for expander instead of +/- */
jmexpander.expand {
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%233498db" width="24px" height="24px"><path d="M0 0h24v24H0z" fill="none"/><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>') !important;
    background-position: center !important;
    background-repeat: no-repeat !important;
    background-size: 12px !important;
}

jmexpander.collapse {
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%233498db" width="24px" height="24px"><path d="M0 0h24v24H0z" fill="none"/><path d="M19 13H5v-2h14v2z"/></svg>') !important;
    background-position: center !important;
    background-repeat: no-repeat !important;
    background-size: 12px !important;
}

jmexpander.expand:hover, jmexpander.collapse:hover {
    background-color: var(--primary-color) !important;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="white" width="24px" height="24px"><path d="M0 0h24v24H0z" fill="none"/><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>') !important;
    background-size: 12px !important;
}

jmexpander.collapse:hover {
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="white" width="24px" height="24px"><path d="M0 0h24v24H0z" fill="none"/><path d="M19 13H5v-2h14v2z"/></svg>') !important;
}

/* Video Close Button */
.video-close-button {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--surface-color);
    color: var(--text-primary);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
    z-index: 10;
}

.video-close-button:hover {
    background-color: #f8f9fa;
    color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

/* Line style improvements */
jmnode.root {
    background-color: var(--primary-color) !important;
    color: white !important;
}

jmnode.root jmexpander {
    background-color: white !important;
}

/* Connection lines styling */
jmexpander::before {
    border-color: var(--primary-color) !important;
}

/* Node Context Menu */
.node-context-menu {
    position: absolute;
    background-color: var(--surface-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    z-index: 2000;
    min-width: 180px;
    font-size: 0.9rem;
    opacity: 0;
    transform: scale(0.95);
    transform-origin: top left;
    transition: opacity 0.15s ease, transform 0.15s ease;
    pointer-events: none;
}

.node-context-menu.visible {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

.context-menu-item {
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: all 0.15s ease;
    color: var(--text-primary);
}

.context-menu-item:hover {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
}

.context-menu-item i {
    width: 16px;
    text-align: center;
}

.context-menu-separator {
    height: 1px;
    background-color: var(--border-color);
    margin: 0.5rem 0;
}

/* Node color picker */
.color-picker-container {
    padding: 0.5rem 1rem;
}

.color-picker-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.color-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.color-option {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    transition: transform 0.2s ease;
}

.color-option:hover {
    transform: scale(1.15);
}

.color-option.selected::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: white;
}

/* Node edit input */
.node-edit-input {
    position: absolute;
    z-index: 2000;
    padding: 8px 12px;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    font-family: inherit;
    font-size: 14px;
    background-color: var(--surface-color);
    width: auto;
    min-width: 150px;
}

/* Custom node colors */
jmnode.node-blue {
    background-color: #3498db !important;
    color: white !important;
}

jmnode.node-green {
    background-color: #2ecc71 !important;
    color: white !important;
}

jmnode.node-red {
    background-color: #e74c3c !important;
    color: white !important;
}

jmnode.node-purple {
    background-color: #9b59b6 !important;
    color: white !important;
}

jmnode.node-orange {
    background-color: #e67e22 !important;
    color: white !important;
}

jmnode.node-yellow {
    background-color: #f1c40f !important;
    color: #34495e !important;
}

jmnode.node-teal {
    background-color: #1abc9c !important;
    color: white !important;
}

jmnode.node-gray {
    background-color: #95a5a6 !important;
    color: white !important;
}

/* Node hover states with color indication */
jmnode.node-blue:hover, jmnode.node-green:hover, jmnode.node-red:hover,
jmnode.node-purple:hover, jmnode.node-orange:hover, jmnode.node-yellow:hover,
jmnode.node-teal:hover, jmnode.node-gray:hover {
    filter: brightness(1.1);
}

/* Floating Action Button (FAB) */
.fab-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 999;
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    gap: 0.75rem;
}

.fab-button {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.fab-button:hover {
    transform: scale(1.1);
    background-color: var(--primary-dark);
}

.fab-button:active {
    transform: scale(0.95);
}

.fab-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    opacity: 0;
    pointer-events: none;
    transform: translateY(1rem);
    transition: all 0.3s ease;
}

.fab-container.active .fab-options {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.fab-container.active .fab-button {
    transform: rotate(45deg);
    background-color: var(--accent-color);
}

.fab-option {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background-color: var(--surface-color);
    color: var(--text-primary);
    border: none;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.fab-option:hover {
    transform: scale(1.1);
    color: var(--primary-color);
}

.fab-option:hover::after {
    content: attr(title);
    position: absolute;
    right: calc(100% + 0.75rem);
    background-color: var(--surface-color);
    color: var(--text-primary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
}

/* Results Gallery */
.gallery-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.gallery-container.active {
    opacity: 1;
    pointer-events: auto;
}

.gallery-content {
    width: 90%;
    max-width: 1200px;
    height: 80%;
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.gallery-container.active .gallery-content {
    transform: scale(1);
}

.gallery-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.gallery-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.gallery-close {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background-color: transparent;
    color: var(--text-primary);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.gallery-close:hover {
    background-color: rgba(0, 0, 0, 0.1);
    color: var(--primary-color);
}

.gallery-content {
    padding: 1.5rem;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background-color: var(--background-color);
    transition: all 0.2s ease;
    cursor: pointer;
    aspect-ratio: 16/9;
    position: relative;
}

.gallery-item:hover {
    transform: translateY(-0.5rem);
    box-shadow: var(--shadow-lg);
}

.gallery-item-preview {
    width: 100%;
    height: 75%;
    object-fit: cover;
    background-color: var(--primary-color);
    opacity: 0.8;
}

.gallery-item-info {
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
}

.gallery-item-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.gallery-item-date {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Dark Mode Adjustments for existing components */
[data-theme="dark"] .app-header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .logo-icon {
    color: var(--primary-color);
}

[data-theme="dark"] .transcription-content,
[data-theme="dark"] .topics-content {
    background-color: #2d3748;
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .progress-container {
    background-color: #2d3748;
}

[data-theme="dark"] .topic {
    background-color: #2d3748;
    border-left: 4px solid var(--primary-color);
}

[data-theme="dark"] jmnode {
    background-color: #2d3748 !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] jmnode.root {
    background-color: var(--primary-color) !important;
    color: white !important;
}

[data-theme="dark"] jmexpander {
    background-color: #4a5568 !important;
}

[data-theme="dark"] .node-context-menu {
    background-color: #2d3748;
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .context-menu-separator {
    background-color: var(--border-color);
}

[data-theme="dark"] .context-menu-item:hover {
    background-color: #4a5568;
}

/* 1. Elevated Card Design System */
.card {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05),
                0 8px 10px -6px rgba(0, 0, 0, 0.02);
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 15px 30px -5px rgba(0, 0, 0, 0.07),
                0 10px 15px -3px rgba(0, 0, 0, 0.04);
    transform: translateY(-2px);
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.2rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
}

.card-title i {
    color: var(--primary-color);
    font-size: 1.3rem;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background-color: rgba(0, 0, 0, 0.01);
}

/* 2. Micro-Interactions & Transitions */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.animate-fade-in {
    animation: fadeIn 0.4s ease forwards;
}

.animate-pulse {
    animation: pulse 2s infinite ease-in-out;
}

/* 4. Custom Video Player Controls */
.video-preview {
    margin: 2rem 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: #000;
    position: relative;
    box-shadow: 0 15px 25px -5px rgba(0, 0, 0, 0.15),
                0 10px 10px -5px rgba(0, 0, 0, 0.05);
}

.video-preview::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 90px;
    background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 100%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-preview:hover::after {
    opacity: 1;
}

.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 10;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.video-preview:hover .video-controls {
    opacity: 1;
    transform: translateY(0);
}

.video-progress {
    flex: 1;
    height: 4px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
    cursor: pointer;
    position: relative;
}

.video-progress-bar {
    height: 100%;
    width: 0;
    background-color: var(--primary-color);
    border-radius: 2px;
    position: relative;
}

.video-progress-handle {
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: white;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.video-progress:hover .video-progress-handle {
    opacity: 1;
}

.video-control-button {
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.video-control-button:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.video-time {
    color: white;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    min-width: 50px;
    text-align: center;
}

.video-preview.playing .video-play-icon {
    display: none;
}

.video-preview:not(.playing) .video-pause-icon {
    display: none;
}

/* 5. Streamlined Action Buttons */
.action-button {
    padding: 0.9rem 1.8rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-heading);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
                0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.action-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, rgba(255,255,255,0) 30%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0) 70%);
    transform: translateX(-100%);
    transition: all 0.6s ease;
}

.action-button:hover::before {
    transform: translateX(100%);
}

.action-button i {
    font-size: 1.1rem;
    transition: transform 0.3s ease;
}

.action-button:hover i {
    transform: scale(1.2);
}

.action-button:active {
    transform: translateY(2px);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.action-button.primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.action-button.primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    box-shadow: 0 10px 15px -3px rgba(52, 152, 219, 0.3),
                0 4px 6px -2px rgba(52, 152, 219, 0.15);
}

.action-button.secondary {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    color: white;
}

.action-button.secondary:hover {
    background: linear-gradient(135deg, var(--secondary-dark), var(--secondary-color));
    box-shadow: 0 10px 15px -3px rgba(46, 204, 113, 0.3),
                0 4px 6px -2px rgba(46, 204, 113, 0.15);
}

.action-button.disabled {
    opacity: 0.7;
    cursor: not-allowed;
    background: #95a5a6;
}

.action-button.disabled::before {
    display: none;
}

.action-button.processing {
    position: relative;
    overflow: hidden;
}

.action-button.processing::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 25%, 
        rgba(255, 255, 255, 0.3) 50%, 
        transparent 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite linear;
}

/* 6. Content Container Improvements */
.content-container {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05),
                0 8px 10px -6px rgba(0, 0, 0, 0.02);
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.content-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.content-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.2rem;
    margin: 0;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.content-title i {
    color: var(--primary-color);
    font-size: 1.3rem;
}

.content-body {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.content-scroll {
    height: 100%;
    overflow-y: auto;
    padding: 1.5rem;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.content-scroll::-webkit-scrollbar {
    width: 6px;
}

.content-scroll::-webkit-scrollbar-track {
    background: transparent;
}

.content-scroll::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 20px;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1.5rem;
    color: var(--text-secondary);
    text-align: center;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.empty-state-description {
    max-width: 300px;
    margin: 0 auto;
    font-size: 0.95rem;
}

/* 7. Status/Progress Visualization */
.status-progress {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.status-text {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.status-text i {
    color: var(--primary-color);
}

.progress-container {
    background-color: var(--background-color);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.progress-steps {
    display: flex;
    margin-bottom: 1rem;
    position: relative;
}

.progress-step {
    flex: 1;
    text-align: center;
    position: relative;
    padding-bottom: 1.5rem;
}

.progress-step-indicator {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--surface-color);
    border: 2px solid var(--border-color);
    margin: 0 auto 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
}

.progress-step-line {
    position: absolute;
    top: 12px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--border-color);
    z-index: 1;
}

.progress-step-icon {
    color: var(--text-secondary);
    font-size: 0.8rem;
    opacity: 0;
    transition: all 0.3s ease;
}

.progress-step-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.progress-step.active .progress-step-indicator {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transform: scale(1.1);
    box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.2);
}

.progress-step.active .progress-step-icon {
    opacity: 1;
    color: white;
}

.progress-step.active .progress-step-label {
    color: var(--primary-color);
    font-weight: 600;
}

.progress-step.completed .progress-step-indicator {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.progress-step.completed .progress-step-icon {
    opacity: 1;
    color: white;
}

.progress-step.completed + .progress-step .progress-step-line,
.progress-step.active + .progress-step .progress-step-line {
    background: linear-gradient(to right, var(--primary-color) 0%, var(--border-color) 100%);
}

.progress-step.completed .progress-step-line {
    background-color: var(--primary-color);
}

.progress-bar {
    height: 6px;
    background-color: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
    margin: 0.5rem 0;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    border-radius: 3px;
    transition: width 0.3s ease;
    position: relative;
    overflow: hidden;
}

.progress-bar-fill::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.4) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    animation: shimmer 2s infinite linear;
    transform: translateX(-100%);
}

/* Dark mode adjustments */
[data-theme="dark"] .content-container {
    border-color: var(--border-color);
}

[data-theme="dark"] .progress-container {
    background-color: #2d3748;
}

[data-theme="dark"] .progress-step-indicator {
    background-color: #4a5568;
    border-color: #4a5568;
}

[data-theme="dark"] .progress-step-line {
    background-color: #4a5568;
}

[data-theme="dark"] .progress-bar {
    background-color: #4a5568;
}

.transcription-content {
    width: 100%;
    line-height: 1.6;
}

.transcription-content p {
    margin-bottom: 8px;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s ease;
}

.transcription-content p:hover {
    background-color: rgba(52, 152, 219, 0.1);
}