/* CSS Design System for Sheet Metal Bend Calculator */

:root {
    /* Theme Variables - Dark Mode (Default) */
    --bg-main: #0a0a0c;
    --bg-surface: #121216;
    --bg-surface-secondary: #1a1a22;
    --bg-surface-tertiary: #22222d;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(79, 110, 242, 0.5);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-tertiary: #6b7280;
    
    --accent: #4f6ef2;
    --accent-hover: #3b5bdb;
    --accent-glow: rgba(79, 110, 242, 0.25);
    
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --info: #06b6d4;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.3);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
}

/* Light Theme Variables */
body.light-theme {
    --bg-main: #f4f5f8;
    --bg-surface: #ffffff;
    --bg-surface-secondary: #f9fafb;
    --bg-surface-tertiary: #f3f4f6;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-focus: rgba(79, 110, 242, 0.4);
    
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-tertiary: #9ca3af;
    
    --accent: #3b5bdb;
    --accent-hover: #2b4cc0;
    --accent-glow: rgba(59, 91, 219, 0.15);
    
    --success: #059669;
    --success-bg: rgba(5, 150, 105, 0.1);
    --warning: #d97706;
    --danger: #dc2626;
    --danger-bg: rgba(220, 38, 38, 0.08);
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.08);
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Outfit', sans-serif;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

.app-container {
    width: 100%;
    max-width: 1360px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--accent), #764ff2);
    color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.4rem;
    box-shadow: 0 4px 12px rgba(79, 110, 242, 0.3);
}

.logo-text h1 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.logo-text .subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 1px;
}

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

.theme-toggle {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: var(--bg-surface-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--bg-surface-tertiary);
    transform: scale(1.05);
}

/* Workspace Layout */
.app-workspace {
    display: grid;
    grid-template-columns: 460px 1fr;
    gap: 20px;
}

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

/* Panels */
.panel {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-header h2 i {
    color: var(--accent);
}

.panel-body {
    padding: 20px;
}

/* Form Styles */
.form-group {
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-row {
    display: flex;
    gap: 16px;
    margin-bottom: 18px;
}

.flex-1 {
    flex: 1;
}

label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

label i {
    font-size: 0.8rem;
    width: 16px;
    text-align: center;
}

select, input[type="number"], input[type="text"] {
    width: 100%;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    background-color: var(--bg-surface-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 400;
    outline: none;
    transition: var(--transition-fast);
}

select:focus, input[type="number"]:focus, input[type="text"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
    background-color: var(--bg-surface-tertiary);
}

/* Inputs with Units */
.input-with-unit {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-unit input {
    padding-right: 48px;
}

.input-with-unit .unit {
    position: absolute;
    right: 14px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-tertiary);
    pointer-events: none;
}

/* V Opening Container */
.v-opening-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Radio Group Options */
.radio-group {
    display: flex;
    gap: 20px;
    margin-top: 4px;
}

.radio-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-primary);
    user-select: none;
}

.radio-label input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-custom {
    height: 18px;
    width: 18px;
    background-color: var(--bg-surface-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    margin-right: 8px;
    display: inline-block;
    position: relative;
    transition: var(--transition-fast);
}

.radio-label:hover input ~ .radio-custom {
    border-color: var(--accent);
}

.radio-label input:checked ~ .radio-custom {
    background-color: var(--accent);
    border-color: var(--accent);
}

.radio-custom:after {
    content: "";
    position: absolute;
    display: none;
    top: 5px;
    left: 5px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: white;
}

.radio-label input:checked ~ .radio-custom:after {
    display: block;
}

/* Dynamic State Indicators */
.calculated-value-indicator {
    background-color: var(--bg-surface-secondary);
    border-left: 3px solid var(--accent);
    padding: 8px 12px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 10px;
}

.hint-text {
    font-size: 0.80rem;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.mt-2 {
    margin-top: 8px;
}

.hidden {
    display: none !important;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.btn-danger {
    background-color: var(--danger-bg);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.2);
}

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

/* Mode Switcher */
.mode-selector-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.mode-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.mode-toggle-group {
    display: flex;
    background-color: var(--bg-surface-secondary);
    border: 1px solid var(--border-color);
    padding: 3px;
    border-radius: var(--radius-md);
}

.mode-btn {
    border: none;
    outline: none;
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 4px;
}

.mode-btn.active {
    background-color: var(--bg-surface-tertiary);
    color: var(--accent);
    box-shadow: var(--shadow-sm);
}

body.dark-theme .mode-btn.active {
    background-color: var(--bg-surface-tertiary);
    color: #fff;
}

/* SKY Precision Mode specific colors */
#modeSky.active {
    background-color: var(--success);
    color: #ffffff;
    box-shadow: 0 2px 6px rgba(16, 185, 129, 0.3);
}

/* Right side Workspace Results */
.workspace-results {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.result-card {
    background-color: var(--bg-surface-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.result-card:after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background-color: var(--border-color);
}

#kFactorCard:after {
    background-color: var(--info);
}

.result-card:nth-child(2):after {
    background-color: var(--accent);
}

.result-card:nth-child(3):after {
    background-color: var(--success);
}

.result-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.result-value {
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    margin-bottom: 6px;
}

.res-unit {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.result-desc {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    line-height: 1.3;
}

.result-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background-color: var(--success-bg);
    color: var(--success);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(16, 185, 129, 0.2);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Visualization Panel */
.preview-panel {
    flex: 1;
    min-height: 280px;
}

.preview-body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    min-height: 240px;
    background-color: var(--bg-surface-secondary);
    position: relative;
    overflow: hidden;
}

.svg-container {
    width: 100%;
    height: 100%;
    max-height: 320px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.svg-container svg {
    max-width: 100%;
    max-height: 100%;
}

.badge {
    padding: 3px 8px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.badge-info {
    background-color: rgba(6, 182, 212, 0.1);
    color: var(--info);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

/* Lower Section Utilities */
.app-utilities {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 900px) {
    .app-utilities {
        grid-template-columns: 1fr;
    }
}

.utility-panel {
    display: flex;
    flex-direction: column;
}

.panel-header-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.utility-row {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.flat-result-container {
    background-color: var(--bg-surface-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.flat-output {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flat-output .label {
    font-weight: 600;
    font-size: 0.95rem;
}

.flat-output .value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent);
}

.flat-formula {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    background-color: var(--bg-main);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    word-break: break-all;
}

/* Table styling for Calibration manager */
.calibration-container {
    height: 100%;
    min-height: 162px;
    display: flex;
    flex-direction: column;
}

.table-responsive {
    overflow-x: auto;
    max-height: 162px;
    overflow-y: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    text-align: left;
}

.data-table th, .data-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background-color: var(--bg-surface-secondary);
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table td {
    color: var(--text-primary);
}

.data-table tbody tr:hover {
    background-color: var(--bg-surface-secondary);
}

/* Modals Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 1;
    transition: opacity 0.25s ease;
}

.modal-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 480px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: modalSlideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.05rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-header h3 i {
    color: var(--accent);
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
    margin-top: 16px;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: var(--bg-surface-secondary);
    border: 1px solid var(--accent);
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1000;
    transform: translateY(0);
    opacity: 1;
    transition: opacity 0.3s, transform 0.3s;
    font-size: 0.9rem;
    font-weight: 500;
}

.toast.success {
    border-color: var(--success);
    color: var(--success);
}

.toast.hidden {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
}

/* SVG Line representation colors (Bending Preview) */
.svg-sheet-metal {
    stroke: var(--text-primary);
    stroke-width: 4;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.svg-neutral-axis {
    stroke: var(--info);
    stroke-width: 1;
    stroke-dasharray: 4 2;
    fill: none;
}

.svg-dimension-line {
    stroke: var(--text-tertiary);
    stroke-width: 1;
    fill: none;
}

.svg-dimension-arrow {
    fill: var(--text-tertiary);
}

.svg-dimension-text {
    fill: var(--text-secondary);
    font-size: 10px;
    font-weight: 500;
    text-anchor: middle;
}

.svg-angle-arc {
    stroke: var(--warning);
    stroke-width: 1;
    stroke-dasharray: 2 1;
    fill: none;
}

/* Calibration Actions */
.btn-action {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.btn-action-delete {
    color: var(--danger);
}

.btn-action-delete:hover {
    background-color: var(--danger-bg);
}