/* Global CSS Variables & Theme Setup */
:root {
    --color-bg-darkest: #0a0d14;
    --color-bg-dark: #101420;
    --color-bg-card: rgba(21, 27, 43, 0.75);
    --color-bg-input: #151b2a;
    --color-primary: #6366f1; /* Vibrant Indigo */
    --color-primary-glow: rgba(99, 102, 241, 0.35);
    --color-accent: #a855f7; /* Electric Purple */
    --color-accent-glow: rgba(168, 85, 247, 0.25);
    --color-success: #10b981; /* Emerald Green */
    --color-success-glow: rgba(16, 185, 129, 0.25);
    --color-warning: #f59e0b; /* Amber */
    --color-danger: #ef4444; /* Rose Red */
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(99, 102, 241, 0.5);
    --shadow-soft: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--color-primary-glow);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --border-radius-sm: 6px;
}

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

body {
    background-color: var(--color-bg-darkest);
    background-image: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
                      radial-gradient(circle at 90% 80%, rgba(168, 85, 247, 0.05) 0%, transparent 40%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 0 24px;
    max-width: 1600px;
    margin: 0 auto;
}

/* Header styling */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-glass);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-logo h1 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.header-logo h1 span.badge {
    font-size: 11px;
    font-family: var(--font-body);
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 3px 8px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: 20px;
    margin-left: 6px;
    vertical-align: middle;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.2);
}

.header-nav {
    display: flex;
    gap: 12px;
    background: rgba(16, 20, 32, 0.6);
    padding: 4px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(8px);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 8px 16px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.nav-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.nav-btn.active {
    color: var(--text-primary);
    background: var(--color-primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

/* Main layouts */
.app-main {
    flex-grow: 1;
    padding: 24px 0;
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Card components */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(16px);
    overflow: hidden;
    margin-bottom: 24px;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.card-body {
    padding: 24px;
}

/* Checkout View Layout */
.checkout-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 24px;
    align-items: start;
}

@media (max-width: 1024px) {
    .checkout-grid {
        grid-template-columns: 1fr;
    }
}

.camera-card {
    margin-bottom: 0;
}

.camera-viewport-container {
    position: relative;
    width: 100%;
    aspect-ratio: 4/3;
    max-height: 520px;
    background: #000;
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#camera-canvas {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Weight Scale target frame overlap overlay */
.scale-target-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scale-target-box {
    width: 70%;
    height: 65%;
    border: 2px dashed rgba(255, 255, 255, 0.25);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.4);
    position: relative;
    transition: all 0.3s ease;
}

.scale-target-box::before, .scale-target-box::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    border-color: rgba(255, 255, 255, 0.5);
    border-style: solid;
}

.scale-target-box::before {
    top: -2px; left: -2px; border-width: 3px 0 0 3px; border-top-left-radius: 8px;
}
.scale-target-box::after {
    bottom: -2px; right: -2px; border-width: 0 3px 3px 0; border-bottom-right-radius: 8px;
}

.scale-flash .scale-target-box {
    border-color: var(--color-success);
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.2), 0 0 40px var(--color-success-glow);
}

.stream-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid var(--border-glass);
    padding: 4px 10px;
    border-radius: var(--border-radius-sm);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-primary);
    backdrop-filter: blur(4px);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
}

.status-indicator::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-indicator.live::before {
    background: var(--color-success);
    box-shadow: 0 0 8px var(--color-success);
    animation: pulse 1.5s infinite;
}

.status-indicator.training::before {
    background: var(--color-warning);
    box-shadow: 0 0 8px var(--color-warning);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); opacity: 0.6; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(0.9); opacity: 0.6; }
}

.camera-controls {
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

/* POS Quick buttons layout */
.quick-buttons-container {
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 12px;
    min-height: 100px;
}

.quick-btn {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    padding: 14px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.quick-btn:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    background: rgba(99, 102, 241, 0.08);
}

.quick-btn:active {
    transform: translateY(0);
}

.quick-btn .btn-label {
    font-size: 13px;
    font-weight: 500;
    text-align: center;
    text-transform: capitalize;
}

.quick-btn .btn-conf {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 20px;
}

/* Style conf badge color dynamically based on class values */
.quick-btn.high-conf {
    border-color: rgba(16, 185, 129, 0.4);
    background: rgba(16, 185, 129, 0.05);
}
.quick-btn.high-conf:hover {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--color-success);
}
.quick-btn.high-conf .btn-conf {
    background: var(--color-success-glow);
    color: #34d399;
}

.quick-btn.low-conf .btn-conf {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

.empty-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    padding: 24px;
    text-align: center;
}

.empty-state span {
    font-size: 12px;
    margin-top: 4px;
}

/* Shopping Cart styling - Kassenzettel */
.cart-card {
    display: none !important;
}

.cart-items {
    padding: 20px 24px;
    flex-grow: 1;
    min-height: 180px;
    max-height: 320px;
    overflow-y: auto;
    border-bottom: 1px dashed var(--border-glass);
}

.empty-cart-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    height: 100%;
    gap: 8px;
    padding: 24px;
}

.empty-cart-state p {
    font-size: 14px;
}

.cart-item-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

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

.item-details {
    display: flex;
    flex-direction: column;
}

.item-name {
    font-weight: 500;
    font-size: 14px;
    text-transform: capitalize;
}

.item-meta {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.item-price-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.item-price {
    font-weight: 600;
    font-size: 14px;
}

.delete-item-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.delete-item-btn:hover {
    color: var(--color-danger);
    background: rgba(239, 68, 68, 0.08);
}

.cart-summary {
    padding: 16px 24px;
    background: rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid var(--border-glass);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.summary-row:last-child {
    margin-bottom: 0;
}

.summary-row.total {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border-glass);
}

.cart-actions {
    padding: 16px 24px;
    display: flex;
    gap: 12px;
}

.cart-actions button {
    flex-grow: 1;
}

/* Button UI system */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--border-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
}
.btn-primary:hover {
    background: #4f46e5;
    transform: translateY(-1px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-glass);
    color: var(--text-primary);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-1px);
}

.btn-accent {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 4px 14px rgba(168, 85, 247, 0.3);
}
.btn-accent:hover {
    background: #9333ea;
    transform: translateY(-1px);
}

.btn-success {
    background: var(--color-success);
    color: #fff;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}
.btn-success:hover {
    background: #059669;
    transform: translateY(-1px);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: var(--color-danger);
}
.btn-danger:hover {
    background: var(--color-danger);
    color: #fff;
    transform: translateY(-1px);
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--color-primary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 13px;
}
.btn-text:hover {
    background: rgba(99, 102, 241, 0.08);
}

.btn-glow:hover {
    box-shadow: 0 0 25px var(--color-primary-glow);
}
.btn-success.btn-glow:hover {
    box-shadow: 0 0 25px var(--color-success-glow);
}

/* Toggle Switches */
.toggle-control {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.toggle-slider {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    transition: all 0.3s ease;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-secondary);
    border-radius: 50%;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

input:checked + .toggle-slider {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

input:checked + .toggle-slider::before {
    transform: translateX(20px);
    background-color: #fff;
}

.toggle-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.toggle-control input {
    display: none;
}

/* Developer Dashboard layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 24px;
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.dashboard-column {
    display: flex;
    flex-direction: column;
}

.step-num {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-accent);
    padding: 3px 8px;
    background: var(--color-accent-glow);
    border-radius: 4px;
    border: 1px solid rgba(168, 85, 247, 0.15);
}

.action-row {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.action-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Preview Augmentations styling */
.augmentation-section {
    border-top: 1px solid var(--border-glass);
    padding-top: 20px;
    margin-top: 20px;
}

.section-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.section-title-row h3 {
    font-size: 15px;
    font-weight: 600;
}

.section-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 12px;
    line-height: 1.4;
}

.preview-container {
    width: 100%;
    aspect-ratio: 2/1;
    background: #090b10;
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.preview-placeholder {
    color: var(--text-muted);
    font-size: 12px;
    text-align: center;
    padding: 24px;
    max-width: 80%;
}

.preview-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Terminal compiler output simulation */
.terminal-container {
    background: #090c12;
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 12px;
    margin-top: 12px;
    margin-bottom: 20px;
}

.terminal-header {
    font-family: monospace;
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 6px;
    padding-bottom: 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.terminal-output {
    font-family: 'Courier New', Courier, monospace;
    font-size: 11px;
    color: #38bdf8; /* light blue */
    white-space: pre-wrap;
    max-height: 120px;
    overflow-y: auto;
    line-height: 1.4;
}

/* Metrics Dashboard Cards */
.metric-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.metric-card {
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
}

.metric-label {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 700;
    margin: 8px 0 4px 0;
}

.metric-desc {
    font-size: 11px;
    color: var(--text-muted);
}

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

/* Training panel inputs & controls */
.training-controls-row {
    display: flex;
    align-items: flex-end;
    gap: 16px;
    margin-bottom: 24px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.control-group label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.control-group input, .control-group select {
    background: var(--color-bg-input);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 8px 12px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    width: 100px;
}

.control-group input:focus, .control-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.training-controls-row button {
    flex-grow: 1;
}

/* Training status monitor card */
.training-status-box {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 16px;
    margin-bottom: 24px;
}

.status-header-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 10px;
}

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

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 12px;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 10px;
    transition: width 0.4s ease;
    box-shadow: 0 0 10px var(--color-primary-glow);
}

.status-log-message {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Training chart */
.chart-container h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.chart-wrapper {
    background: #090c12;
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 12px;
}

.training-chart {
    width: 100%;
    height: auto;
    overflow: visible;
}

.training-chart text {
    font-family: monospace;
}

.chart-legend {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 10px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    color: var(--text-secondary);
}

.legend-color {
    width: 12px;
    height: 4px;
    border-radius: 2px;
    display: inline-block;
}

.legend-color.train {
    background: var(--color-primary);
}

.legend-color.val {
    background: var(--color-accent);
    border-top: 1px dashed #fff; /* indicates dash array */
}

/* Real Data Capture Panel Styles */
.capture-training-panel {
    padding: 16px 24px;
    border-top: 1px dashed var(--border-glass);
    background: rgba(0, 0, 0, 0.12);
}

.capture-training-panel h3 {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.capture-controls-row {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 8px;
}

.capture-controls-row select {
    flex-grow: 1;
    background: var(--color-bg-input);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 8px 12px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    outline: none;
}

.capture-controls-row select:focus {
    border-color: var(--color-accent);
}

.capture-count-badge {
    font-size: 12px;
    font-weight: 600;
    padding: 6px 12px;
    background: var(--color-accent-glow);
    border: 1px solid rgba(168, 85, 247, 0.2);
    color: var(--color-accent);
    border-radius: var(--border-radius-sm);
    white-space: nowrap;
}

.panel-info-text {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Article Management Table Styles */
.articles-table th, .articles-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-glass);
}

.articles-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.articles-table input {
    background: var(--color-bg-input);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-sm);
    padding: 6px 12px;
    color: var(--text-primary);
    font-family: monospace;
    font-size: 14px;
    width: 100%;
    max-width: 250px;
    outline: none;
    transition: all 0.2s ease;
}

.articles-table input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 8px var(--color-primary-glow);
}

/* Footer styling */
.app-footer {
    border-top: 1px solid var(--border-glass);
    padding: 16px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 11px;
}