/* Import Abel Font */
@import url('https://fonts.googleapis.com/css2?family=Abel:wght@400&display=swap');

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

:root {
    /* Light theme colors */
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e5e5ea;
    --text-primary: #1d1d1f;
    --text-secondary: #6d6d70;
    --text-tertiary: #8e8e93;
    --accent-blue: #007aff;
    --accent-green: #34c759;
    --accent-red: #ff3b30;
    --border-color: #d1d1d6;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    --ascii-bg: #1d1d1f;
    --ascii-text: #f5f5f7;
}

@media (prefers-color-scheme: dark) {
    :root {
        /* Dark theme colors */
        --bg-primary: #1c1c1e;
        --bg-secondary: #2c2c2e;
        --bg-tertiary: #3a3a3c;
        --text-primary: #ffffff;
        --text-secondary: #ebebf5;
        --text-tertiary: #8e8e93;
        --accent-blue: #0a84ff;
        --accent-green: #30d158;
        --accent-red: #ff453a;
        --border-color: #38383a;
        --shadow: rgba(0, 0, 0, 0.3);
        --shadow-hover: rgba(0, 0, 0, 0.4);
        --ascii-bg: #000000;
        --ascii-text: #00ff00;
    }
}

body {
    font-family: 'Abel', -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    width: 100%;
    box-sizing: border-box;
}

/* Header */
header {
    text-align: center;
    padding: 40px 0;
}

header h1 {
    font-family: 'Abel', sans-serif;
    font-size: 48px;
    font-weight: 400;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-family: 'Abel', sans-serif;
    font-size: 18px;
    font-weight: 400;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.tab-button {
    background: var(--bg-secondary);
    border: none;
    padding: 12px 24px;
    font-family: 'Abel', sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: var(--text-primary);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px var(--shadow);
}

.tab-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-hover);
}

.tab-button.active {
    background: var(--accent-blue);
    color: #ffffff;
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

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

/* Panel Grid */
.panel-grid {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 20px;
    min-height: 500px;
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .panel-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
}

/* Control Panel */
.control-panel {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 16px var(--shadow);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

/* Camera Status */
.camera-status {
    margin-bottom: 20px;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.status-indicator {
    display: flex;
    align-items: center;
    font-family: 'Abel', sans-serif;
    font-size: 14px;
    font-weight: 400;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-red);
    margin-right: 8px;
    transition: background-color 0.3s ease;
}

.status-dot.active {
    background: var(--accent-green);
    animation: pulse 2s infinite;
}

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

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

/* Camera Container */
.camera-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: 8px;
    resize: both;
    min-width: 200px;
    min-height: 150px;
    border: 2px solid transparent;
    transition: border-color 0.3s ease;
}

.camera-container:hover {
    border-color: var(--accent-blue);
}

.camera-container:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.2);
}

/* Resize Handle */
.resize-handle {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 20px;
    height: 20px;
    background: var(--accent-blue);
    border-radius: 8px 0 8px 0;
    cursor: nw-resize;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.camera-container:hover .resize-handle,
.camera-container:focus .resize-handle {
    opacity: 0.7;
}

.resize-handle:hover {
    opacity: 1 !important;
}

.resize-handle::after {
    content: '';
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-bottom: 6px solid white;
}

/* Display Panel */
.display-panel {
    background: var(--ascii-bg);
    border-radius: 16px;
    padding: 24px;
    overflow: auto;
    box-shadow: 0 4px 16px var(--shadow);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.control-panel h2 {
    font-family: 'Abel', sans-serif;
    font-size: 20px;
    font-weight: 400;
    margin-bottom: 20px;
    color: var(--text-primary);
}

/* Radio Group */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.radio-label {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.radio-label:hover {
    background: var(--border-color);
}

.radio-label input[type="radio"] {
    margin-right: 10px;
    accent-color: var(--accent-blue);
}

.radio-label span {
    font-family: 'Abel', sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: var(--text-primary);
}

/* Input Group */
.input-group {
    margin-bottom: 20px;
}

.color-select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Abel', sans-serif;
    font-size: 14px;
    font-weight: 400;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.2s ease, background-color 0.3s ease;
}

.color-select:focus {
    outline: none;
    border-color: var(--accent-blue);
}

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

input[type="range"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.input-group label {
    display: block;
    font-family: 'Abel', sans-serif;
    font-size: 14px;
    font-weight: 400;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.input-group input[type="text"] {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Abel', sans-serif;
    font-size: 14px;
    font-weight: 400;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.2s ease, background-color 0.3s ease;
}

.input-group input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.input-group input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

.input-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-blue);
    border-radius: 50%;
    cursor: pointer;
}

.input-group input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--accent-blue);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* Checkbox Group */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    margin-right: 10px;
    width: 18px;
    height: 18px;
    accent-color: var(--accent-blue);
    cursor: pointer;
}

.checkbox-label span {
    font-family: 'Abel', sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: var(--text-primary);
}

/* File Upload */
.file-upload {
    margin-bottom: 20px;
}

.file-label {
    display: inline-block;
    padding: 12px 24px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Abel', sans-serif;
    font-weight: 400;
    font-size: 14px;
    color: var(--text-primary);
}

.file-label:hover {
    background: var(--border-color);
}

.file-label input[type="file"] {
    display: none;
}

.file-name {
    margin-top: 8px;
    font-family: 'Abel', sans-serif;
    font-size: 12px;
    font-weight: 400;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 10px;
    font-family: 'Abel', sans-serif;
    font-size: 14px;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 10px;
}

.btn-primary {
    background: var(--accent-blue);
    color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-blue);
    opacity: 0.8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.btn-primary:disabled {
    background: var(--text-tertiary);
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--border-color);
    transform: translateY(-2px);
}

.btn-warning {
    background: #ff9500;
    color: #ffffff;
}

.btn-warning:hover:not(:disabled) {
    background: #e6850e;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 149, 0, 0.3);
}

/* Display Panel */
.display-panel {
    background: var(--ascii-bg);
    border-radius: 16px;
    padding: 24px;
    overflow: auto;
    box-shadow: 0 4px 16px var(--shadow);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.ascii-display {
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 10px;
    line-height: 1.2;
    color: var(--ascii-text);
    white-space: pre;
    overflow-x: auto;
    margin: 0;
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 0 20px;
    color: var(--text-secondary);
    font-family: 'Abel', sans-serif;
    font-size: 14px;
    font-weight: 400;
}

footer a {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 400;
}

footer a:hover {
    text-decoration: underline;
}

/* Loading State */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;
    height: 24px;
    margin: -12px 0 0 -12px;
    border: 3px solid #007aff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.8s linear infinite;
}

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

/* Scrollbar Styling */
.ascii-display::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.ascii-display::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

.ascii-display::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.ascii-display::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}