@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-page: #f8fafc;
    --surface: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: rgba(226, 232, 240, 0.8);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glass: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --radius: 20px;
    --radius-sm: 12px;
    --input-bg: #f8fafc;
    --input-focus: #ffffff;

    /* New Floating Panel Theme Variables */
    --panel-bg: rgba(255, 255, 255, 0.85);
    --accent: #3b82f6;
    --glass-blur: blur(16px);
    --glass-border: rgba(255, 255, 255, 0.5);

    --hover-bg: #f1f5f9;
    --error-bg: #fee2e2;
}

[data-theme="dark"] {
    color-scheme: dark;
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --bg-page: #0f172a;
    --surface: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(51, 65, 85, 0.8);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --input-bg: rgba(15, 23, 42, 0.6);
    --input-focus: #1e293b;

    /* Dark Theme Floating Panel */
    --panel-bg: rgba(30, 41, 59, 0.85);
    --glass-border: rgba(255, 255, 255, 0.08);

    --hover-bg: #334155;
    --error-bg: rgba(239, 68, 68, 0.2);
}

/* Base styles remain */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-family: 'Inter', -apple-system, sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

body {
    background-color: var(--bg-page);
    color: var(--text-main);
    color-scheme: light dark;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    /* Prevent scrolling, 3D is full screen */
}

/* Topbar */
.topbar {
    background: var(--surface);
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent);
    color: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.brand h1 {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand p {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Container & Visual Area */
.container {
    position: relative;
    width: 100%;
    height: 100vh;
    padding-top: 73px;
    /* Height of topbar */
}

.visual-area {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, var(--surface) 0%, var(--bg-page) 100%);
    z-index: 1;
}

#canvas-container {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

.canvas-hint {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    background: var(--panel-bg);
    backdrop-filter: var(--glass-blur);
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--glass-border);
    pointer-events: none;
}

/* Floating Panels */
.floating-panel {
    position: absolute;
    background: var(--panel-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: var(--shadow-glass);
    padding: 24px;
    z-index: 10;
    top: 90px;
    bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    overflow-y: auto;
}

.floating-panel::-webkit-scrollbar {
    width: 6px;
}

.floating-panel::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 6px;
}

.left-panel {
    left: 24px;
    width: 360px;
}

.right-panel {
    right: 24px;
    width: 380px;
}

/* Typography & Forms */
.section-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.val-highlight {
    color: var(--text-main);
    font-weight: 700;
    font-size: 14px;
}

.grid-1 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

/* Selector Cards */
.selector-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.selector-cards label:last-child {
    grid-column: 1 / -1;
}

.selector-card {
    position: relative;
    cursor: pointer;
    margin-bottom: 0;
}

.selector-card input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.card-content {
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    transition: all 0.2s ease;
}

.selector-card:hover .card-content {
    background: var(--hover-bg);
}

.selector-card input:checked~.card-content {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    box-shadow: 0 4px 10px rgba(59, 130, 246, 0.3);
}

/* Custom Sliders */
.slider-group {
    margin-bottom: 16px;
}

.custom-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 6px;
    background: var(--border);
    outline: none;
    padding: 0;
    margin-top: 8px;
}

.custom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    border: 3px solid var(--accent);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    transition: transform 0.1s ease;
}

.custom-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 6px;
}

/* Accordion */
.custom-accordion {
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    transition: all 0.3s;
}

.custom-accordion[open] summary {
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
    margin-bottom: 12px;
}

.custom-accordion summary::-webkit-details-marker {
    display: none;
}

/* Material Swatches */
.material-swatches {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.swatch {
    position: relative;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, border-color 0.2s;
    background-size: cover;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Global tooltip appended to body */
.global-tooltip {
    position: fixed;
    pointer-events: none;
    background: var(--text-main);
    color: var(--bg-page);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.15s ease, transform 0.15s ease;
    transform: translate(-50%, -50%) scale(0.9);
    z-index: 999999;
}

.global-tooltip.show {
    opacity: 1;
    transform: translate(-50%, -100%) scale(1);
}

.swatch:hover {
    transform: scale(1.1);
}

.swatch.selected {
    border-color: var(--accent);
    transform: scale(1.1);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

/* Toggle Switch (iOS style) */
.toggles-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: var(--input-bg);
    padding: 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.toggle-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    margin: 0;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider.round {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border);
    transition: .3s;
    border-radius: 24px;
}

.slider.round:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

input:checked+.slider.round {
    background-color: var(--accent);
}

input:checked+.slider.round:before {
    transform: translateX(20px);
}

/* Number inputs */
input[type="number"] {
    width: 100%;
    padding: 10px 12px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-main);
    font-weight: 500;
    outline: none;
    transition: 0.2s;
}

input[type="number"]:focus {
    background: var(--input-focus);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
}

/* Buttons */
.btn {
    background: var(--text-main);
    color: var(--bg-page);
    border: none;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    opacity: 0.9;
}

.btn-outline {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    background: var(--hover-bg);
    box-shadow: none;
    transform: none;
    opacity: 1;
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 8px;
}

.btn-micro {
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.2s;
}

.btn-micro:hover {
    background: var(--hover-bg);
    border-color: var(--accent);
}

.btn-micro.active {
    background: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
}

/* Stats and Totals */
.stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.stat-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
}

.total-divider {
    height: 1px;
    background: var(--border);
    margin: 20px 0 16px 0;
}

.total-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.total-sum {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.02em;
    line-height: 1.1;
    display: flex;
    align-items: baseline;
    transition: 0.2s;
    border-radius: 12px;
    padding: 8px 12px;
    margin-left: -12px;
}

.total-sum:hover {
    background: var(--hover-bg);
}

.currency {
    color: var(--accent);
    font-weight: 600;
    font-size: 20px;
    margin-left: 6px;
}

/* Live Receipt */
.live-receipt {
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-top: 12px;
    font-size: 13px;
    animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    transform-origin: top;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: scaleY(0.9) translateY(-10px);
    }

    to {
        opacity: 1;
        transform: scaleY(1) translateY(0);
    }
}

.receipt-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

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

/* 3D dimension badges */
.dimension-badge {
    background: var(--text-main);
    color: var(--bg-page);
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 13px;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
    white-space: nowrap;
    cursor: pointer;
    pointer-events: auto;
    /* Made interactive */
    transition: transform 0.2s, background 0.2s;
}

.dimension-badge:hover {
    transform: translateY(-2px) scale(1.05);
    background: var(--accent);
    color: #fff;
}

/* Highlight Animation for Inputs */
@keyframes highlightFlash {
    0% {
        background-color: rgba(59, 130, 246, 0.3);
    }

    100% {
        background-color: transparent;
    }
}

.flash-highlight {
    animation: highlightFlash 1s ease-out;
}

/* Dormer Item overrides */
.dormer-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-bottom: 12px;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.btn-remove {
    position: absolute;
    top: 12px;
    right: 12px;
    background: transparent;
    color: #ef4444;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.2s;
}

.btn-remove:hover {
    background: var(--error-bg);
}

/* Responsiveness */
@media(max-width: 1024px) {
    body {
        overflow: auto;
    }

    .container {
        height: auto;
        padding-top: 80px;
    }

    .visual-area {
        position: relative;
        height: 60vh;
        min-height: 400px;
    }

    .floating-panel {
        position: static;
        width: 100%;
        margin-bottom: 24px;
        border-radius: 0;
        border-left: none;
        border-right: none;
        box-shadow: none;
    }

    .canvas-hint {
        bottom: 12px;
    }
}