/* ==========================================================================
   GHAR - PREMIUM DESIGN SYSTEM & CUSTOM CSS
   Engineered by NDTechHub
   ========================================================================== */

/* --- Custom Properties & Variables --- */
:root {
    --bg-primary: #080c16;
    --bg-secondary: #0f1626;
    --bg-card: rgba(18, 26, 47, 0.6);
    --bg-card-hover: rgba(26, 38, 68, 0.75);
    --border-color: rgba(255, 255, 255, 0.07);
    --border-color-focus: rgba(245, 158, 11, 0.4);
    
    --text-primary: #f8fafc;
    --text-muted: #94a3b8;
    --text-dark: #0f172a;
    
    --color-primary: #f59e0b; /* Construction Gold/Amber */
    --color-primary-rgb: 245, 158, 11;
    --color-secondary: #10b981; /* Construction Green/Success */
    --color-accent: #3b82f6; /* Layout Blue */
    --color-danger: #ef4444; /* Alert Red */
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --glass-blur: blur(16px);
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --card-shadow-hover: 0 20px 40px -15px rgba(245, 158, 11, 0.15);
}

/* --- Base & Reset Elements --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* --- Accent Glows & Background Grid --- */
.bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(180px);
    z-index: -2;
    opacity: 0.15;
    pointer-events: none;
}
.bg-glow-1 {
    background: radial-gradient(circle, rgba(245, 158, 11, 0.6) 0%, transparent 70%);
    top: -100px;
    right: -100px;
}
.bg-glow-2 {
    background: radial-gradient(circle, rgba(59, 130, 246, 0.6) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
}
.bg-grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 30px 30px;
    z-index: -1;
    pointer-events: none;
}

/* --- Scrollbars --- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-secondary);
    border-radius: 4px;
    border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* --- Layout Utility Classes --- */
.flex-row { display: flex; flex-direction: row; }
.flex-col { display: flex; flex-direction: column; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-auto { margin-top: auto; }
.m-0 { margin: 0; }
.w-full { width: 100%; }
.text-accent { color: var(--color-primary); }
.text-danger { color: var(--color-danger); }
.hidden { display: none !important; }

/* --- Cards & Glassmorphism --- */
.card {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}
.card:hover {
    border-color: rgba(245, 158, 11, 0.15);
}
.glassmorphic {
    background: rgba(10, 15, 30, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-center: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-fast);
    border: 1px solid transparent;
    outline: none;
    text-decoration: none;
}
.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    border-radius: 6px;
}
.btn-xs {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border-radius: 4px;
}
.btn-lg {
    padding: 0.8rem 1.8rem;
    font-size: 1rem;
    border-radius: 10px;
}
.btn-icon {
    padding: 0.5rem;
    aspect-ratio: 1;
    border-radius: 50%;
}
.btn-primary {
    background-color: var(--color-primary);
    color: var(--text-dark);
    font-weight: 600;
}
.btn-primary:hover {
    background-color: #f59e0bda;
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.4);
    transform: translateY(-1px);
}
.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover {
    background-color: var(--bg-card-hover);
    border-color: rgba(255, 255, 255, 0.15);
}
.btn-outline {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}
.btn-outline:hover, .btn-outline.active {
    border-color: var(--color-primary);
    color: var(--text-primary);
    background-color: rgba(245, 158, 11, 0.05);
}
.btn-block {
    display: flex;
    width: 100%;
}

/* --- Header / Navigation --- */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: rgba(8, 12, 22, 0.8);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    height: 70px;
}
.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.logo-icon {
    background: linear-gradient(135deg, var(--color-primary), #f97316);
    color: var(--text-dark);
    padding: 0.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.logo-text h1 {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: 0.05em;
}
.logo-text span {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.08em;
}
.app-nav {
    display: flex;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 0.25rem;
    border-radius: 30px;
    gap: 0.25rem;
}
.nav-btn {
    background: transparent;
    border: none;
    padding: 0.5rem 1.20rem;
    border-radius: 20px;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}
.nav-btn svg {
    width: 16px;
    height: 16px;
}
.nav-btn:hover {
    color: var(--text-primary);
}
.nav-btn.active {
    background-color: var(--color-primary);
    color: var(--text-dark);
    font-weight: 600;
}
.brand-badge {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(245, 158, 11, 0.2);
    padding: 0.3rem 0.8rem;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.brand-badge svg {
    width: 12px;
    height: 12px;
}

/* --- Container & Pages --- */
.app-container {
    flex: 1;
    padding: 2rem;
    position: relative;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}
.app-page {
    display: none;
    animation: fadeIn var(--transition-normal) forwards;
}
.app-page.active {
    display: block;
}

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

/* --- Page: Landing --- */
.hero-section {
    text-align: center;
    max-width: 800px;
    margin: 4rem auto 5rem;
}
.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
}
.gradient-text {
    background: linear-gradient(90deg, var(--color-primary) 0%, #f97316 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 2.5rem;
}
.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}
.feature-card {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 16px;
    cursor: pointer;
    transition: var(--transition-normal);
}
.feature-card:hover {
    border-color: rgba(245, 158, 11, 0.25);
    background-color: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
}
.feature-icon {
    width: 48px;
    height: 48px;
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--color-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}
.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}
.feature-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}
.learn-more {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
}
.learn-more svg {
    width: 14px;
    height: 14px;
    transition: var(--transition-fast);
}
.feature-card:hover .learn-more svg {
    transform: translateX(4px);
}

/* --- Shared Sidebar Layout --- */
.sidebar-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 1.5rem;
    height: calc(100vh - 130px);
}

/* --- Sidebar Controls --- */
.planner-sidebar, .viewer-sidebar {
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    gap: 1.5rem;
}
.sidebar-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}
.sidebar-header h3 {
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}
.sidebar-header h3 svg {
    color: var(--color-primary);
    width: 18px;
    height: 18px;
}
.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.group-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 700;
}
.preset-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}
.floor-selector-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    max-height: 120px;
    overflow-y: auto;
}
.floor-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.4rem 0.6rem;
    cursor: pointer;
    font-size: 0.85rem;
}
.floor-row.active {
    border-color: var(--color-primary);
    background-color: rgba(245, 158, 11, 0.05);
}
.floor-row span {
    font-weight: 500;
}
.floor-del-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
}
.floor-del-btn:hover {
    color: var(--color-danger);
}

.element-pallete {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}
.btn-element {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.6rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    transition: var(--transition-fast);
    color: var(--text-muted);
}
.btn-element svg {
    width: 20px;
    height: 20px;
}
.btn-element span {
    font-size: 0.75rem;
    font-weight: 500;
}
.btn-element:hover, .btn-element.active {
    border-color: var(--color-primary);
    color: var(--text-primary);
    background-color: rgba(245, 158, 11, 0.05);
}
.btn-element.active svg {
    color: var(--color-primary);
}

/* --- Elevation Canvas --- */
.elevation-preview-container {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}
.elevation-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.5rem;
}
.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
}
.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}
.elevation-canvas-container {
    height: 120px;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}
#elevation-canvas {
    width: 100%;
    height: 100%;
}

/* --- Main Canvas Area --- */
.canvas-main-area {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    height: 100%;
}
.canvas-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 1rem !important;
}
.toolbar-left {
    font-size: 0.8rem;
    color: var(--text-muted);
}
.toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.canvas-container {
    flex: 1;
    background-color: #0b1120;
    position: relative;
    overflow: hidden;
    padding: 0 !important;
    display: flex;
    align-items: center;
    justify-content: center;
}
#planner-canvas {
    display: block;
    cursor: crosshair;
}
.canvas-stats-row {
    height: 80px;
}
.stat-card {
    padding: 0.8rem 1.2rem !important;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.stat-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.2rem;
}
.stat-val {
    font-size: 1.3rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

/* --- Page: 3D Viewer Layout --- */
.viewer-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 1.5rem;
    height: calc(100vh - 130px);
}
.viewer-main {
    height: 100%;
    position: relative;
    padding: 0 !important;
    overflow: hidden;
}
#threejs-container {
    width: 100%;
    height: 100%;
}
.viewer-overlay-top {
    position: absolute;
    top: 1rem;
    left: 1rem;
    right: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    pointer-events: none;
}
.viewer-badge {
    background-color: rgba(8, 12, 22, 0.8);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.viewer-badge svg {
    color: var(--color-primary);
    width: 14px;
    height: 14px;
}
.camera-controls-badge {
    pointer-events: auto;
    display: flex;
    background-color: rgba(8, 12, 22, 0.8);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    padding: 0.25rem;
    border-radius: 30px;
    gap: 0.2rem;
}
.viewer-overlay-bottom {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1.2rem !important;
    background-color: rgba(8, 12, 22, 0.85) !important;
    width: 400px;
}
.keyboard-layout {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
}
.keys-row {
    display: flex;
    gap: 3px;
}
.key {
    width: 22px;
    height: 22px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    font-weight: 700;
}
.instructions-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* --- Viewer Textures Control Panel --- */
.texture-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}
.btn-texture {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
    color: var(--text-muted);
}
.btn-texture span {
    font-size: 0.7rem;
    font-weight: 500;
}
.texture-preview {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}
.btn-texture:hover, .btn-texture.active {
    border-color: var(--color-primary);
    color: var(--text-primary);
    background-color: rgba(245, 158, 11, 0.05);
}

/* Texture colors (placeholders representing materials) */
.bg-concrete { background: radial-gradient(circle, #555 10%, #777 90%); }
.bg-cream { background-color: #fef08a; }
.bg-brick { background-image: linear-gradient(45deg, #b91c1c 25%, #991b1b 25%, #991b1b 50%, #b91c1c 50%, #b91c1c 75%, #991b1b 75%, #991b1b 100%); background-size: 10px 10px; }
.bg-wood { background-color: #7c2d12; }
.bg-tiles { background: conic-gradient(from 0deg, #e2e8f0 25%, #cbd5e1 25% 50%, #94a3b8 50% 75%, #cbd5e1 75%); background-size: 8px 8px; }
.bg-hardwood { background-color: #a16207; }
.bg-carpet { background-color: #1e3a8a; }

.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 5px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    transition: opacity .2s;
}
.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
}

.view-shortcuts h4 {
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

/* --- Page: Cost Estimator --- */
.estimator-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 1.5rem;
    height: calc(100vh - 130px);
}
.estimator-upload-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    height: 100%;
}
.upload-zone {
    border: 2px dashed rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 2.5rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
}
.upload-zone:hover {
    border-color: var(--color-primary);
    background-color: rgba(245, 158, 11, 0.02);
}
.file-input {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    top: 0;
    left: 0;
}
.upload-icon {
    width: 44px;
    height: 44px;
    color: var(--text-muted);
    margin-bottom: 1rem;
}
.upload-text {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}
.upload-subtext {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.sample-blueprints {
    margin-top: auto;
}
.sample-grid {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* --- Blueprint Scanner Visualizer --- */
.scanning-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}
.preview-canvas-wrap {
    width: 100%;
    height: 170px;
    position: relative;
    overflow: hidden;
    background-color: #0b1120;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.preview-canvas-wrap img {
    max-width: 100%;
    max-height: 100%;
    opacity: 0.4;
    object-fit: contain;
}
#scanning-markup-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}
.scanner-bar {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    box-shadow: 0 0 10px 1px var(--color-primary);
    top: 0;
    z-index: 2;
    animation: scanAnim 3s infinite linear;
}

@keyframes scanAnim {
    0% { top: 0%; }
    50% { top: 100%; }
    100% { top: 0%; }
}

.scan-logs {
    height: 90px;
    overflow-y: auto;
    font-family: monospace;
    font-size: 0.7rem;
    color: #38bdf8;
    background-color: rgba(0, 0, 0, 0.4);
    padding: 0.5rem;
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.log-entry {
    animation: slideInUp 0.2s ease-out;
}
@keyframes slideInUp {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}
.progress-bar-container {
    width: 100%;
    height: 4px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
}
.progress-bar-fill {
    height: 100%;
    width: 0%;
    background-color: var(--color-secondary);
    transition: width 0.1s ease-out;
}

/* --- Estimator Detailed Table --- */
.estimator-dashboard {
    height: 100%;
    display: flex;
    flex-direction: column;
}
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}
.dashboard-header h3 {
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.dashboard-header h3 svg {
    color: var(--color-primary);
}
.select-box {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 6px;
    padding: 0.4rem 0.8rem;
    outline: none;
    font-size: 0.85rem;
    cursor: pointer;
}
.select-sm {
    padding: 0.35rem 0.6rem;
    font-size: 0.8rem;
}

/* Metrics Cards */
.totals-dashboard-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}
.total-metric {
    padding: 1rem 1.25rem;
}
.metric-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 0.25rem;
}
.metric-value {
    font-size: 1.6rem;
    font-weight: 700;
    font-family: var(--font-heading);
    display: block;
}
.metric-footer {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
    display: block;
}

/* Spreadsheet Container */
.spreadsheet-container {
    flex: 1;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background-color: rgba(0, 0, 0, 0.15);
}
.spreadsheet-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.85rem;
}
.spreadsheet-table th {
    background-color: rgba(15, 22, 38, 0.9);
    position: sticky;
    top: 0;
    padding: 0.75rem 1rem;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    z-index: 2;
}
.spreadsheet-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.spreadsheet-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}
.spreadsheet-table input.cell-input {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-primary);
    width: 100%;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
}
.spreadsheet-table input.cell-input:hover {
    border-color: rgba(255, 255, 255, 0.1);
    background-color: rgba(255, 255, 255, 0.02);
}
.spreadsheet-table input.cell-input:focus {
    border-color: var(--color-primary);
    background-color: rgba(0, 0, 0, 0.2);
    outline: none;
}

/* --- FLOATING CHATBOT (GharAI) --- */
.chat-trigger-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), #f97316);
    color: var(--text-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 10px 25px -5px rgba(245, 158, 11, 0.4);
    z-index: 999;
    transition: var(--transition-normal);
}
.chat-trigger-btn:hover {
    transform: scale(1.08) rotate(5deg);
    box-shadow: 0 15px 30px -5px rgba(245, 158, 11, 0.5);
}
.chat-trigger-btn svg {
    width: 24px;
    height: 24px;
}
.pulse-indicator {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 12px;
    height: 12px;
    background-color: var(--color-secondary);
    border-radius: 50%;
    border: 2px solid var(--bg-primary);
}

.chat-container {
    position: fixed;
    bottom: 6rem;
    right: 2rem;
    width: 380px;
    height: 520px;
    display: flex;
    flex-direction: column;
    z-index: 998;
    overflow: hidden;
    box-shadow: 0 20px 50px -15px rgba(0, 0, 0, 0.7);
    border-color: rgba(255, 255, 255, 0.12);
    animation: chatOpen var(--transition-normal) forwards;
}

@keyframes chatOpen {
    from { opacity: 0; transform: translateY(20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.chat-header {
    padding: 1rem;
    background-color: rgba(8, 12, 22, 0.85);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.chat-agent-info {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.agent-avatar {
    width: 32px;
    height: 32px;
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.agent-avatar svg {
    width: 16px;
    height: 16px;
}
.agent-details h4 {
    font-size: 0.85rem;
    font-weight: 600;
}
.agent-details span {
    font-size: 0.65rem;
    color: var(--text-muted);
}
.chat-close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
}
.chat-close-btn:hover {
    color: var(--text-primary);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background-color: rgba(6, 9, 17, 0.55);
}
.message {
    padding: 0.6rem 0.8rem;
    border-radius: 12px;
    max-width: 85%;
    font-size: 0.8rem;
    line-height: 1.45;
}
.message.system {
    align-self: flex-start;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    max-width: 100%;
}
.message.agent {
    align-self: flex-start;
    background-color: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-top-left-radius: 2px;
}
.message.user {
    align-self: flex-end;
    background-color: var(--color-primary);
    color: var(--text-dark);
    font-weight: 500;
    border-top-right-radius: 2px;
}
.message.agent p, .message.system p {
    margin-bottom: 0.4rem;
}
.message.agent p:last-child, .message.system p:last-child {
    margin-bottom: 0;
}

.quick-prompts {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-top: 0.5rem;
}
.quick-prompts button {
    text-align: left;
    width: fit-content;
}

.chat-input-row {
    padding: 0.75rem 1rem;
    background-color: rgba(8, 12, 22, 0.9);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 0.5rem;
}
.chat-input-row input {
    flex: 1;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 0.45rem 1rem;
    color: var(--text-primary);
    font-size: 0.8rem;
    outline: none;
}
.chat-input-row input:focus {
    border-color: var(--color-primary);
}

/* --- PRINT STYLES (For Estimator PDF & Printing) --- */
@media print {
    body {
        background-color: #fff !important;
        color: #000 !important;
        height: auto !important;
        min-height: auto !important;
        overflow: visible !important;
    }
    .bg-glow, .bg-grid-overlay, .app-header, .planner-sidebar, .viewer-sidebar, 
    .estimator-upload-panel, .chat-trigger-btn, .chat-container, .dashboard-header .flex-row, 
    .canvas-toolbar, .action-cell, .table-action-btn, th:last-child, td:last-child {
        display: none !important;
    }
    .app-container {
        padding: 0 !important;
        max-width: 100% !important;
        height: auto !important;
        min-height: auto !important;
        overflow: visible !important;
    }
    .app-page {
        display: none !important;
    }
    #page-estimator.app-page {
        display: block !important;
        height: auto !important;
        min-height: auto !important;
        overflow: visible !important;
    }
    .estimator-layout {
        display: block !important;
        height: auto !important;
        min-height: auto !important;
        overflow: visible !important;
    }
    .estimator-dashboard {
        border: none !important;
        box-shadow: none !important;
        background: transparent !important;
        padding: 0 !important;
        display: block !important;
        height: auto !important;
        min-height: auto !important;
        overflow: visible !important;
    }
    .totals-dashboard-grid {
        grid-template-columns: repeat(3, 1fr) !important;
        margin-bottom: 20px !important;
    }
    .total-metric {
        border: 1px solid #ddd !important;
        background: #fff !important;
        color: #000 !important;
        box-shadow: none !important;
    }
    .total-metric *, .estimator-dashboard * {
        color: #000 !important;
    }
    .spreadsheet-container {
        border: 1px solid #000 !important;
        background: #fff !important;
        height: auto !important;
        min-height: auto !important;
        overflow: visible !important;
    }
    .spreadsheet-table {
        color: #000 !important;
    }
    .spreadsheet-table th {
        background-color: #eee !important;
        color: #000 !important;
        border-bottom: 2px solid #000 !important;
    }
    .spreadsheet-table td {
        border-bottom: 1px solid #ddd !important;
        color: #000 !important;
    }
    .spreadsheet-table input.cell-input {
        color: #000 !important;
        border: none !important;
        background: transparent !important;
        text-align: right !important;
    }
    /* Hide input number spinner arrows */
    input::-webkit-outer-spin-button,
    input::-webkit-inner-spin-button {
        -webkit-appearance: none;
        margin: 0;
    }
    input[type=number] {
        -moz-appearance: textfield;
    }
}