/* Enhanced CSS Variables and Base Styles */
:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --secondary: #38bdf8;
    --accent: #06b6d4;
    --background: linear-gradient(135deg, #0c4a6e 0%, #075985 25%, #0369a1 50%, #0284c7 75%, #0ea5e9 100%);
    --surface: rgba(255, 255, 255, 0.1);
    --surface-hover: rgba(255, 255, 255, 0.15);
    --text-primary: #ffffff;
    --text-secondary: #cbd5e1;
    --border-color: rgba(255, 255, 255, 0.2);
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Enhanced Navigation */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(12, 74, 110, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo .highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: var(--surface);
}

.nav-actions {
    display: flex;
    gap: 1rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

/* Enhanced Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-normal);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--surface);
    border-color: var(--primary);
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding: 6rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.hero-visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    position: relative;
}

.floating-card {
    background: var(--surface);
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    animation: float 6s ease-in-out infinite;
}

.floating-card:nth-child(2) {
    animation-delay: -1.5s;
}

.floating-card:nth-child(3) {
    animation-delay: -3s;
}

.floating-card:nth-child(4) {
    animation-delay: -4.5s;
}

.floating-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* App Container */
.app-container {
    min-height: 100vh;
    background: transparent;
    position: relative;
    z-index: 1;
}

/* Enhanced Tab System */
.tab-nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
    padding: 0 2rem;
    flex-wrap: wrap;
}

.tab-btn {
    background: transparent;
    border: none;
    padding: 1rem 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
    position: relative;
    transition: var(--transition-fast);
    font-weight: 500;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: var(--transition-fast);
    transform: translateX(-50%);
    border-radius: var(--radius-sm);
}

.tab-btn:hover::after {
    width: 100%;
}

.tab-btn.active {
    color: var(--text-primary);
    background: var(--surface);
}

.tab-btn.active::after {
    width: 100%;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

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

/* Pipeline Section */
.pipeline-section {
    padding: 4rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Baseline Container */
.baseline-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

.step-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 3rem;
    text-align: center;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
}

/* Enhanced Upload Zone */
.upload-zone {
    border: 3px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    transition: var(--transition-fast);
    background: var(--surface);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    margin-bottom: 2rem;
}

.upload-zone::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition-normal);
}

.upload-zone:hover {
    border-color: var(--primary);
    background: var(--surface-hover);
}

.upload-zone:hover::before {
    opacity: 0.1;
}

.upload-zone.dragover {
    border-color: var(--secondary);
    background: rgba(56, 189, 248, 0.1);
    transform: scale(1.02);
}

.upload-content {
    position: relative;
    z-index: 1;
}

.upload-icon i {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: 1rem;
    opacity: 0.8;
}

.upload-zone:hover .upload-icon i {
    transform: scale(1.1);
    transition: var(--transition-fast);
}

.upload-limit {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 1rem;
}

/* Progress System */
.upload-progress {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(20px);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin: 1rem 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    width: 0%;
    transition: width var(--transition-normal);
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.upload-spinner {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: center;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Video Preview */
.video-preview {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
}

.baseline-frame-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.frame-display {
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.baseline-image {
    width: 100%;
    height: auto;
    display: block;
}

.baseline-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
}

.info-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.info-value {
    color: var(--text-primary);
    font-weight: 600;
}

.baseline-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    flex-wrap: wrap;
}

/* Zones Container */
.zones-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

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

.zones-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.zones-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Canvas System */
.canvas-section {
    margin-bottom: 3rem;
}

.canvas-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.drawing-controls {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.canvas-container {
    position: relative;
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.zone-canvas {
    width: 100%;
    height: auto;
    display: block;
    cursor: crosshair;
}

.canvas-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: var(--transition-fast);
}

.canvas-overlay.visible {
    opacity: 1;
}

.drawing-instructions {
    text-align: center;
    color: var(--text-primary);
}

.drawing-instructions i {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--secondary);
}

.drawing-status {
    display: flex;
    gap: 1rem;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: var(--surface);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

.drawing-status.active {
    background: rgba(14, 165, 233, 0.2);
    border: 1px solid rgba(14, 165, 233, 0.3);
}

/* Form System */
.zone-config-form {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 3rem;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
}

.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.form-header h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.form-header p {
    color: var(--text-secondary);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.range-value {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    min-width: 3rem;
    text-align: center;
    margin-left: 0.5rem;
    display: inline-block;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Zones List */
.zones-list {
    margin-top: 3rem;
}

.zones-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.zones-actions {
    display: flex;
    gap: 1rem;
}

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

.zone-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 2px solid transparent;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
}

.zone-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--zone-color, var(--primary)), var(--secondary));
}

.zone-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--zone-color, var(--primary));
}

.zone-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.zone-info h4 {
    margin: 0 0 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.priority-badge {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.priority-1 { background: var(--error); }
.priority-2 { background: var(--warning); }
.priority-3 { background: var(--primary); }
.priority-4 { background: var(--accent); }
.priority-5 { background: var(--success); }

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

.btn-icon {
    width: 2rem;
    height: 2rem;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.zone-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.25rem 0;
}

.detail-item .label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.detail-item .value {
    font-weight: 600;
    color: var(--text-primary);
}

.empty-zones {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
    grid-column: 1 / -1;
}

.empty-zones i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    opacity: 0.5;
}

.empty-zones p {
    margin: 0.5rem 0;
}

.empty-zones p:first-of-type {
    font-weight: 600;
    color: var(--text-primary);
}

/* Beam Control Styles */
.beam-control-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    gap: 2rem;
}

.beam-status-section {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
}

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

.status-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.status-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    font-size: 1.5rem;
}

.beam-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--error);
    animation: pulse 2s infinite;
    position: relative;
}

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

.status-dot::after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: 50%;
    background: inherit;
    opacity: 0.3;
    animation: ripple 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes ripple {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.5); opacity: 0; }
}

.status-text {
    font-weight: 600;
    color: var(--error);
    font-size: 1.1rem;
}

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

.control-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.status-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
}

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

.status-item .value {
    color: var(--text-primary);
    font-weight: 600;
}

.beam-main-area {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.video-monitor, .zone-status-panel {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
}

.monitor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.monitor-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.video-container {
    background: rgba(0, 0, 0, 0.4);
    border-radius: var(--radius-md);
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.video-placeholder {
    text-align: center;
    color: var(--text-secondary);
}

.video-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
    color: var(--primary);
}

.video-placeholder p {
    margin: 0.5rem 0;
}

.video-placeholder small {
    font-size: 0.8rem;
    opacity: 0.7;
}

.zone-status-panel h3 {
    margin: 0 0 1rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.zones-status-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.zone-status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.zone-status-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.zone-info .zone-name {
    font-weight: 600;
    color: var(--text-primary);
}

.zone-info small {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.zone-status {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

.zone-status.clear {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.zone-status.motion {
    background: rgba(239, 68, 68, 0.2);
    color: var(--error);
}

.no-zones-message {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.no-zones-message i {
    font-size: 2rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.beam-events-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.live-status, .events-log {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
}

.live-status h3, .events-log h3 {
    margin: 0 0 1rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.status-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.events-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.events-list {
    max-height: 200px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.events-list::-webkit-scrollbar {
    width: 4px;
}

.events-list::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
}

.events-list::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-sm);
}

.no-events {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
    font-style: italic;
}

.event-item {
    margin-bottom: 0.5rem;
}

.event-item > div {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--surface);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--primary);
}

.event-item.error > div {
    border-left-color: var(--error);
}

.event-item.success > div {
    border-left-color: var(--success);
}

/* Patent Styles */
.patent-main {
    min-height: 100vh;
    padding: 2rem 0;
}

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

.patent-header {
    text-align: center;
    margin-bottom: 4rem;
}

.patent-header-content {
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: 4rem 2rem;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
}

.patent-icon {
    margin-bottom: 2rem;
}

.patent-icon i {
    font-size: 4rem;
    color: var(--primary);
}

.patent-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.patent-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.patent-badges {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.patent-badge {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: var(--shadow-md);
}

.pdf-viewer-section {
    margin-bottom: 4rem;
}

.pdf-controls {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
}

.pdf-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.pdf-info p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.pdf-container {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 1rem;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.pdf-container iframe {
    border-radius: var(--radius-md);
    border: none;
}

.patent-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.detail-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.detail-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.detail-icon {
    margin-bottom: 1rem;
}

.detail-icon i {
    font-size: 2.5rem;
    color: var(--primary);
}

.detail-card h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.detail-card p {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary);
}

.patent-footer {
    text-align: center;
}

/* Utility Classes */
.hidden { display: none !important; }
.visible { display: block !important; }
.text-center { text-align: center; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        grid-template-columns: 1fr;
        gap: 3rem;
        padding: 4rem 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .zones-grid {
        grid-template-columns: 1fr;
    }
    
    .tab-nav {
        flex-direction: column;
        align-items: center;
    }
    
    .beam-control-container {
        padding: 1rem;
    }
    
    .beam-main-area {
        grid-template-columns: 1fr;
    }
    
    .beam-events-section {
        grid-template-columns: 1fr;
    }
    
    .control-buttons {
        justify-content: center;
    }
    
    .status-info {
        grid-template-columns: 1fr;
    }
    
    .baseline-frame-container {
        grid-template-columns: 1fr;
    }
    
    .canvas-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .drawing-controls {
        justify-content: center;
    }
    
    .zones-list-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .zones-actions {
        justify-content: center;
    }
    
    .patent-header h1 {
        font-size: 2rem;
    }
    
    .patent-details {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .tab-btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .upload-zone {
        padding: 2rem 1rem;
    }
    
    .upload-icon i {
        font-size: 3rem;
    }
    
    .baseline-container,
    .zones-container,
    .beam-control-container {
        padding: 1rem;
    }
    
    .patent-header-content {
        padding: 2rem 1rem;
    }
    
    .patent-icon i {
        font-size: 3rem;
    }
}


/* Features Grid Container */
.resume-tips-section {
  padding: 4rem 2rem;
  background: rgba(255, 255, 255, 0.05);
}
.tips-container {
  max-width: 1200px;
  margin: 0 auto;
}
.tips-header {
  text-align: center;
  margin-bottom: 3rem;
}
.tips-title {
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--text-primary);
}
.tips-title .highlight {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.tips-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  line-height: 1.6;
}

/* Grid of Cards */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
  padding: 0 1rem;
}

/* Card Base */
.tip-card {
  background-color: var(--surface);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.tip-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border-color: var(--primary);
}

/* Card Variants */
.tip-card.featured { border-color: var(--accent); }
.tip-card.priority { border-color: var(--error); }
.tip-card.warning  { border-color: var(--warning); }
.tip-card.success  { border-color: var(--success); }

/* Icon */
.tip-icon {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
  flex-shrink: 0;
}

/* Title & List */
.tip-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}
.tip-list {
  list-style: none;
  margin: 0;
  padding: 0;
  flex-grow: 1;
}
.tip-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.tip-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary);
}

/* Call-to-Action */
.cta-section {
  text-align: center;
  margin-top: 4rem;
  padding: 2rem;
  background: var(--surface-hover);
  border-radius: var(--radius-lg);
}
.cta-section h2 {
  font-size: 2rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}
.cta-section p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}
.cta-actions .btn {
  margin: 0 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
  .tips-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}
@media (max-width: 480px) {
  .tips-title {
    font-size: 2.25rem;
  }
  .tip-icon {
    font-size: 2rem;
  }
  .tip-title {
    font-size: 1.1rem;
  }
}