/* ===================================
   Industrial Control Interface Styles
   =================================== */

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

:root {
    --bg-dark: #0a0e27;
    --bg-surface: #1a1d35;
    --bg-elevated: #1e2139;
    --border: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: #a0a3bd;
    --accent-blue: #00d4ff;
    --accent-purple: #9d4edd;
    --accent-green: #06ffa5;
    --accent-amber: #ffa500;
    --accent-red: #ff5252;
    --glow-blue: rgba(0, 212, 255, 0.3);
    --glow-purple: rgba(157, 78, 221, 0.3);
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #9d4edd 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.8;
    overflow-x: hidden;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Back Button */
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    margin-bottom: 3rem;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.back-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--glow-blue);
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 60px;
    animation: fadeInDown 0.8s ease-out;
}

.header h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Tab Navigation */
.tab-nav {
    display: flex;
    gap: 8px;
    margin-bottom: 40px;
    border-bottom: 2px solid var(--border);
    animation: fadeIn 1s ease-out 0.2s both;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 600;
    padding: 16px 32px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-blue);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-blue);
    box-shadow: 0 0 20px var(--glow-blue);
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn 0.5s ease-out;
}

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

/* Proximity Demo Section */
.proximity-demo {
    background: var(--bg-surface);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--border);
    margin-bottom: 40px;
}

.demo-controls {
    text-align: center;
    margin-bottom: 40px;
}

.demo-controls h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--accent-blue);
}

.distance-slider {
    width: 100%;
    max-width: 600px;
    margin: 0 auto 20px;
}

.slider-track {
    position: relative;
    height: 8px;
    background: var(--bg-elevated);
    border-radius: 4px;
    cursor: pointer;
}

.slider-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    transition: width 0.3s ease;
    box-shadow: 0 0 20px var(--glow-blue);
}

.slider-thumb {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    background: var(--accent-blue);
    border: 3px solid var(--bg-dark);
    border-radius: 50%;
    cursor: grab;
    transition: left 0.3s ease;
    box-shadow: 0 0 20px var(--glow-blue);
}

.slider-thumb:active {
    cursor: grabbing;
}

.distance-label {
    display: flex;
    justify-content: space-between;
    margin-top: 12px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.mode-indicator {
    display: inline-block;
    padding: 8px 24px;
    background: var(--bg-elevated);
    border-radius: 24px;
    font-weight: 600;
    font-size: 1.1rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.mode-indicator.long-distance {
    color: var(--accent-amber);
    border-color: var(--accent-amber);
    box-shadow: 0 0 20px rgba(255, 171, 0, 0.3);
}

.mode-indicator.short-distance {
    color: var(--accent-blue);
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px var(--glow-blue);
}

/* Interface Display */
.interface-display {
    background: var(--bg-dark);
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid var(--border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: all 0.5s ease;
}

/* Long Distance View */
.long-distance-view {
    padding: 80px 40px;
    text-align: center;
}

.production-line-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 40px;
    letter-spacing: -0.02em;
}

.metric-grid-large {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.metric-card-large {
    background: var(--bg-surface);
    padding: 60px 40px;
    border-radius: 12px;
    border: 2px solid var(--border);
    transition: all 0.3s ease;
}

.metric-label-large {
    font-size: 1.8rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

.metric-value-large {
    font-size: 6rem;
    font-weight: 700;
    line-height: 1;
}

.metric-value-large.status-good { color: var(--accent-blue); }
.metric-value-large.status-warning { color: var(--accent-amber); }
.metric-value-large.status-critical { color: var(--accent-red); }

.metric-unit {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-left: 8px;
}

/* Short Distance View */
.short-distance-view {
    padding: 32px;
    display: none;
}

.control-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.control-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: 24px;
    font-weight: 600;
    font-size: 0.95rem;
}

.status-badge.operational {
    background: rgba(0, 212, 255, 0.15);
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    animation: pulse 2s ease-in-out infinite;
}

.metrics-compact {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.metric-compact {
    background: var(--bg-elevated);
    padding: 24px;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.metric-compact:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px var(--glow-blue);
    transform: translateY(-2px);
}

.metric-compact-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-compact-value {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.metric-compact-unit {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-left: 4px;
}

.controls-panel {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
}

.control-section {
    background: var(--bg-elevated);
    padding: 24px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.control-section h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--accent-blue);
}

.control-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.btn-primary:hover {
    box-shadow: 0 8px 24px var(--glow-blue);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px var(--glow-blue);
}

.btn-danger {
    background: var(--accent-red);
    color: white;
}

.btn-danger:hover {
    background: #ff6b6b;
    box-shadow: 0 0 20px rgba(255, 82, 82, 0.4);
}

.alert-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-surface);
    border-radius: 6px;
    margin-bottom: 12px;
    border-left: 3px solid var(--accent-amber);
}

.alert-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 171, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-amber);
    font-weight: 700;
}

.alert-text {
    flex: 1;
    font-size: 0.9rem;
}

/* Display Types Grid */
.display-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 32px;
    margin-bottom: 40px;
}

.display-card {
    background: var(--bg-surface);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    animation: fadeIn 0.6s ease-out both;
}

.display-card:nth-child(1) { animation-delay: 0.1s; }
.display-card:nth-child(2) { animation-delay: 0.2s; }
.display-card:nth-child(3) { animation-delay: 0.3s; }

.display-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border-color: var(--accent-blue);
}

.display-preview {
    height: 300px;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.display-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(74, 158, 255, 0.1), transparent);
    animation: shimmer 3s infinite;
}

.display-info {
    padding: 24px;
}

.display-info h3 {
    font-size: 1.8rem;
    margin-bottom: 12px;
    color: var(--accent-blue);
}

.display-info p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.feature-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: 700;
}

/* Personas Section */
.personas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.persona-card {
    background: var(--bg-surface);
    border-radius: 12px;
    padding: 32px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    animation: fadeIn 0.6s ease-out both;
}

.persona-card:nth-child(1) { animation-delay: 0.1s; }
.persona-card:nth-child(2) { animation-delay: 0.2s; }
.persona-card:nth-child(3) { animation-delay: 0.3s; }
.persona-card:nth-child(4) { animation-delay: 0.4s; }

.persona-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border-color: var(--accent-blue);
}

.persona-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.persona-card h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: var(--accent-blue);
}

.persona-role {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.persona-tasks {
    list-style: none;
    margin-top: 20px;
}

.persona-tasks li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.persona-tasks li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: 700;
}

/* Design Principles */
.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.principle-card {
    background: var(--bg-surface);
    border-radius: 12px;
    padding: 32px;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.6s ease-out both;
}

.principle-card:nth-child(1) { animation-delay: 0.1s; }
.principle-card:nth-child(2) { animation-delay: 0.2s; }
.principle-card:nth-child(3) { animation-delay: 0.3s; }
.principle-card:nth-child(4) { animation-delay: 0.4s; }
.principle-card:nth-child(5) { animation-delay: 0.5s; }

.principle-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    /* background: var(--gradient-primary); */
}

.principle-card h3 {
    font-size: 1.6rem;
    margin-bottom: 16px;
    color: var(--accent-blue);
}

.principle-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Impact Section */
.impact-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-bottom: 48px;
}

.impact-card {
    background: var(--bg-surface);
    border-radius: 12px;
    padding: 48px 32px;
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s ease;
    animation: fadeIn 0.6s ease-out both;
}

.impact-card:nth-child(1) { animation-delay: 0.1s; }
.impact-card:nth-child(2) { animation-delay: 0.2s; }
.impact-card:nth-child(3) { animation-delay: 0.3s; }

.impact-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-blue);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.impact-label {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.impact-value {
    font-size: 5rem;
    font-weight: 700;
    line-height: 1;
}

.impact-value.positive {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.impact-quote {
    background: var(--bg-surface);
    border-radius: 12px;
    padding: 40px;
    border-left: 4px solid var(--accent-blue);
    border: 1px solid var(--border);
    margin-top: 48px;
    animation: fadeIn 0.8s ease-out 0.4s both;
}

.impact-quote p {
    font-size: 1.5rem;
    color: var(--text-primary);
    line-height: 1.7;
    text-align: center;
}

.impact-quote strong {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-style: italic;
}

/* Section Headers */
.section-intro {
    margin-bottom: 32px;
}

.section-intro h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

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

.demo-mode-wrapper {
    margin-top: 20px;
}

.display-icon {
    font-size: 4rem;
}

.persona-description {
    color: var(--text-secondary);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 0 0 currentColor;
    }
    50% {
        opacity: 0.7;
        box-shadow: 0 0 10px 4px currentColor;
    }
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 200%;
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .metrics-compact {
        grid-template-columns: repeat(2, 1fr);
    }

    .controls-panel {
        grid-template-columns: 1fr;
    }

    .metric-grid-large {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 2.5rem;
    }

    .tab-btn {
        padding: 12px 16px;
        font-size: 0.95rem;
    }

    .metric-grid-large {
        grid-template-columns: 1fr;
    }

    .production-line-title {
        font-size: 2.5rem;
    }

    .metric-value-large {
        font-size: 4rem;
    }

    .impact-metrics {
        grid-template-columns: 1fr;
    }

    .impact-value {
        font-size: 4rem;
    }

    .impact-quote p {
        font-size: 1.2rem;
    }
}