/* Custom CSS for Tiling Cost Calculator - Glassmorphism, Premium Aesthetics */

:root {
    /* Color Palette - Luxury Black, White & Burnt Orange */
    --primary-hue: 20;
    --accent-hue: 24; /* Logo Orange */
    --highlight-hue: 24;
    
    --bg-gradient: #ffffff; /* Pure white */
    --text-primary: #1e1e1e;
    --text-secondary: #5a5a5a;
    --text-accent: #e65c00;
    
    /* Glassmorphism Styles */
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(30, 30, 30, 0.07);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.04);
    --glass-blur: blur(12px);
    
    /* Elements */
    --card-bg: rgba(255, 255, 255, 0.85);
    --card-border: rgba(30, 30, 30, 0.05);
    --input-bg: rgba(255, 255, 255, 0.95);
    --input-border: rgba(200, 200, 200, 0.8);
    
    /* Accent gradients - Black primary buttons with orange hover */
    --btn-gradient: linear-gradient(135deg, #1e1e1e 0%, #3a3a3a 100%);
    --btn-hover-gradient: linear-gradient(135deg, #e65c00 0%, #ff751a 100%);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}



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

html {
    background: var(--bg-gradient);
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: transparent;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
    transition: background var(--transition-normal), color var(--transition-normal);
}

/* Background Bubbles for Depth */
.glass-bg-elements {
    display: none !important;
}

.bubble {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.15;
    animation: float 20s infinite ease-in-out;
}

body.dark-theme .bubble {
    opacity: 0.1;
}

/* Radial background grid removed */

.bubble-1 {
    width: 30vw;
    height: 30vw;
    background: hsl(var(--accent-hue), 80%, 50%);
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.bubble-2 {
    width: 40vw;
    height: 40vw;
    background: hsl(var(--highlight-hue), 70%, 50%);
    bottom: -10%;
    right: -10%;
    animation-delay: -5s;
}

.bubble-3 {
    width: 25vw;
    height: 25vw;
    background: hsl(var(--accent-hue), 85%, 65%);
    top: 50%;
    left: 45%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-40px) scale(1.1); }
}

/* App Header */
.app-header {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background var(--transition-normal), border var(--transition-normal);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.8rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 80px;
    width: auto;
    display: block;
    object-fit: contain;
}

.header-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Buttons */
.btn-control {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-family: inherit;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

.btn-control:hover {
    background: var(--text-primary);
    color: var(--input-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

.highlight-control {
    background: var(--btn-gradient);
    color: #fff;
    border: none;
}

.highlight-control:hover {
    background: var(--btn-hover-gradient);
    color: #fff;
}

.btn-secondary {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-primary);
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

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

.btn-primary {
    background: var(--btn-gradient);
    color: #fff;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 700;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-fast);
}

.btn-primary:hover {
    background: var(--btn-hover-gradient);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* Main Content */
.main-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 2.5rem 2rem;
    flex-grow: 1;
}

.hero-section {
    text-align: center;
    margin-bottom: 2.5rem;
}

.hero-section h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
}

.hero-section p {
    color: var(--text-secondary);
    font-size: 1.15rem;
}

/* Project Type Cards */
.project-type-section {
    margin-bottom: 2.5rem;
    width: 100%;
}

.project-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

@media (max-width: 868px) {
    .project-cards-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

.proj-card {
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    text-align: left;
    font-family: inherit;
    color: inherit;
    transition: all var(--transition-normal);
    box-shadow: var(--glass-shadow);
}

.proj-card:hover {
    transform: translateY(-4px);
    border-color: hsl(var(--accent-hue), 80%, 45%);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}

.proj-card.active {
    background: var(--card-bg);
    border-color: hsl(var(--accent-hue), 85%, 40%);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1);
}

body.dark-theme .proj-card.active {
    border-color: hsl(var(--accent-hue), 95%, 45%);
}

.proj-card-icon {
    font-size: 2.2rem;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
}

.proj-card.active .proj-card-icon {
    color: hsl(var(--accent-hue), 85%, 40%);
    transform: scale(1.1);
}

body.dark-theme .proj-card.active .proj-card-icon {
    color: hsl(var(--accent-hue), 95%, 45%);
}

.proj-card-content {
    display: flex;
    flex-direction: column;
}

.proj-card-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
    color: var(--text-primary);
}

.proj-card-content p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.3;
}

/* Views and Navigation */
.view-section {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.view-section.active {
    display: block;
}

.project-cards-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 0;
}

@media (max-width: 1200px) {
    .project-cards-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .project-cards-grid-4 {
        grid-template-columns: 1fr;
    }
}

.calculator-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--glass-shadow);
}

.nav-breadcrumbs {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-accent);
}

/* Calculator Grid */
.calculator-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 2.5rem;
    align-items: start;
}

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

/* Panels */
.panel {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2.2rem;
    box-shadow: var(--glass-shadow);
    transition: background var(--transition-normal), border var(--transition-normal);
}

.panel-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

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

/* Inputs Active States */
.input-group-wrapper {
    display: none;
}

.input-group-wrapper.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Input Cards */
.input-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.02);
    transition: background var(--transition-normal), border var(--transition-normal);
}

.card-section-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    letter-spacing: 0.2px;
}

.section-desc-i18n {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    margin-top: -0.8rem;
}

/* Fields Grid */
.fields-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

@media (max-width: 640px) {
    .fields-grid {
        grid-template-columns: 1fr;
    }
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.field-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.unit-badge {
    background: rgba(var(--accent-hue), 0.1);
    color: var(--text-accent);
    padding: 0.15rem 0.5rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    border: 1px solid rgba(var(--accent-hue), 0.15);
}

body.dark-theme .unit-badge {
    background: rgba(174, 90%, 45%, 0.15);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper input {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    outline: none;
    transition: all var(--transition-fast);
}

.input-wrapper input:focus {
    border-color: hsl(var(--accent-hue), 80%, 40%);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.input-wrapper .suffix {
    position: absolute;
    right: 1rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    pointer-events: none;
}

/* Stepper for Bathroom */
.base-bathroom-group {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

.base-bathroom-group label {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
    max-width: 60%;
}

.base-bathroom-group .base-label {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.base-bathroom-group .subtitle-label {
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.unit-badge-large {
    background: var(--btn-gradient);
    color: #fff;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-top: 0.4rem;
}

.number-stepper {
    display: flex;
    align-items: center;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.number-stepper input {
    width: 60px;
    text-align: center;
    border: none;
    background: transparent;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    outline: none;
    padding: 0.5rem 0;
    -moz-appearance: textfield;
}

.number-stepper input::-webkit-outer-spin-button,
.number-stepper input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.stepper-btn {
    border: none;
    background: transparent;
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.stepper-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

body.dark-theme .stepper-btn:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Addon Select Lists */
.addons-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.addon-item-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--input-border);
}

.addon-item-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.addon-name {
    font-size: 0.95rem;
    font-weight: 500;
}

.select-wrapper {
    position: relative;
    min-width: 200px;
}

.addon-select {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    padding: 0.5rem 2rem 0.5rem 0.8rem;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg fill='gray' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/><path d='M0 0h24v24H0z' fill='none'/></svg>");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    background-size: 1.5rem;
    transition: border var(--transition-fast);
}

.addon-select:focus {
    border-color: hsl(var(--accent-hue), 80%, 40%);
}

/* Surcharge Checkbox Cards */
.surcharge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

.checkbox-card {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-fast);
}

.checkbox-card:hover {
    border-color: hsl(var(--accent-hue), 80%, 40%);
    background: var(--glass-bg);
}

.checkbox-card input {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--input-border);
    border-radius: 4px;
    display: inline-block;
    position: relative;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.checkbox-card input:checked + .checkbox-custom {
    background: hsl(var(--accent-hue), 80%, 40%);
    border-color: hsl(var(--accent-hue), 80%, 40%);
}

.checkbox-card input:checked + .checkbox-custom::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.7rem;
    color: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.chk-content {
    display: flex;
    flex-direction: column;
}

.chk-title {
    font-size: 0.9rem;
    font-weight: 600;
}

.chk-amount {
    font-size: 0.8rem;
    color: var(--text-accent);
    font-weight: 700;
}

/* Output Estimate Panel */
.quote-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.quote-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.03);
    position: relative;
    color: #0f172a;
    transition: transform var(--transition-normal);
    overflow: hidden;
}

body.dark-theme .quote-card {
    background: #1e293b;
    border-color: rgba(255,255,255,0.05);
    color: #f8fafc;
}

.print-watermark-bg {
    position: absolute;
    top: -50px;
    right: -50px;
    font-size: 15rem;
    opacity: 0.03;
    pointer-events: none;
    z-index: 0;
}

.quote-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 2px solid #f1f5f9;
    padding-bottom: 1.2rem;
    margin-bottom: 1.5rem;
    z-index: 1;
    position: relative;
}

body.dark-theme .quote-card-header {
    border-bottom-color: #334155;
}

.quote-title-block h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

.quote-date {
    font-size: 0.8rem;
    color: #64748b;
    margin-top: 0.2rem;
}

body.dark-theme .quote-date {
    color: #94a3b8;
}

.quote-logo {
    display: flex;
    align-items: center;
}

.quote-logo-img {
    height: 60px;
    width: auto;
    display: block;
    object-fit: contain;
}

.breakdown-list {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    z-index: 1;
    position: relative;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    animation: itemSlideIn 0.3s ease forwards;
}

@keyframes itemSlideIn {
    from { opacity: 0; transform: translateX(10px); }
    to { opacity: 1; transform: translateX(0); }
}

.bd-label {
    color: #475569;
}

body.dark-theme .bd-label {
    color: #cbd5e1;
}

.bd-price {
    font-weight: 600;
}

.divider {
    border: none;
    border-top: 1px solid #f1f5f9;
    margin: 1.5rem 0;
}

body.dark-theme .divider {
    border-top-color: #334155;
}

.pricing-summary {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-bottom: 1.5rem;
    z-index: 1;
    position: relative;
}

.price-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
}

.price-lbl {
    color: #64748b;
}

body.dark-theme .price-lbl {
    color: #cbd5e1;
}

.price-val {
    font-weight: 600;
}

.total-row {
    margin-top: 0.5rem;
    font-size: 1.25rem;
    border-top: 2px dashed #e2e8f0;
    padding-top: 0.8rem;
}

body.dark-theme .total-row {
    border-top-color: #334155;
}

.total-row .price-lbl {
    font-weight: 700;
    color: #0f172a;
}

body.dark-theme .total-row .price-lbl {
    color: #f8fafc;
}

.highlight-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--btn-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.quote-footer {
    font-size: 0.75rem;
    color: #94a3b8;
    line-height: 1.4;
    text-align: center;
    border-top: 1px solid #f1f5f9;
    padding-top: 1rem;
}

body.dark-theme .quote-footer {
    border-top-color: #334155;
}

/* SETTINGS SIDE DRAWER */
.settings-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    z-index: 200;
    visibility: hidden;
    transition: visibility var(--transition-normal);
}

.settings-drawer.open {
    visibility: visible;
}

.drawer-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.settings-drawer.open .drawer-overlay {
    opacity: 1;
}

.drawer-content {
    position: absolute;
    top: 0;
    right: -450px;
    width: 450px;
    max-width: 100%;
    height: 100%;
    background: #ffffff;
    box-shadow: -5px 0 25px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
    transition: right var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-theme .drawer-content {
    background: #0f172a;
    color: #f8fafc;
}

.settings-drawer.open .drawer-content {
    right: 0;
}

.drawer-header {
    padding: 1.5rem;
    border-bottom: 1px solid #f1f5f9;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

body.dark-theme .drawer-header {
    border-bottom-color: #1e293b;
}

.drawer-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.3rem;
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

.btn-close:hover {
    background: rgba(0,0,0,0.05);
    color: var(--text-primary);
}

body.dark-theme .btn-close:hover {
    background: rgba(255,255,255,0.05);
}

.drawer-body {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

.settings-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.settings-section {
    margin-bottom: 2rem;
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 1.5rem;
}

body.dark-theme .settings-section {
    border-bottom-color: #1e293b;
}

.settings-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.settings-section h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-accent);
}

.setting-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 400px) {
    .setting-grid {
        grid-template-columns: 1fr;
    }
}

.setting-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.setting-input-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.setting-input-group input {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    padding: 0.5rem 0.8rem;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    outline: none;
    width: 100%;
}

.setting-input-group input:focus {
    border-color: hsl(var(--accent-hue), 80%, 40%);
}

.drawer-footer {
    padding: 1.5rem;
    border-top: 1px solid #f1f5f9;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

body.dark-theme .drawer-footer {
    border-top-color: #1e293b;
}


/* Floor and Wall inputs grid, wall surcharge badge, and floor-only state */
.tiling-areas-rows {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.tiling-type-row {
    padding-bottom: 1.2rem;
    border-bottom: 1px solid var(--input-border);
}

.tiling-type-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.tiling-type-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
}

.tiling-type-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.tiling-inputs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 480px) {
    .tiling-inputs-grid {
        grid-template-columns: 1fr;
    }
}

.wall-surcharge-badge {
    background: rgba(230, 92, 0, 0.1);
    color: var(--text-accent);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-left: 0.4rem;
}

.sub-checkbox-wrapper {
    margin-top: 0.8rem;
    padding-left: 0.2rem;
}

.sub-checkbox-card {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    user-select: none;
}

.sub-checkbox-card input {
    display: none;
}

.sub-checkbox-card .checkbox-custom {
    width: 18px;
    height: 18px;
    border: 2px solid var(--input-border);
    border-radius: 4px;
    display: inline-block;
    position: relative;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.sub-checkbox-card input:checked + .checkbox-custom {
    background: var(--text-accent);
    border-color: var(--text-accent);
}

.sub-checkbox-card input:checked + .checkbox-custom::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.6rem;
    color: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Floor Only mode state */
.mode-floor-only .wall-field,
.mode-floor-only .row-pool,
.mode-floor-only .row-coping-std,
.mode-floor-only .row-coping-stone,
.mode-floor-only .card-finishing {
    display: none !important;
}

.mode-floor-only .tiling-inputs-grid {
    grid-template-columns: 1fr !important;
}

/* Duplex / Large Volume Tiling mode state */
.mode-duplex .row-pool,
.mode-duplex .row-coping-std,
.mode-duplex .row-coping-stone {
    display: none !important;
}

/* Pool & Specialty mode state */
.mode-pool-only .row-std,
.mode-pool-only .row-fmt,
.mode-pool-only .row-specialty,
.mode-pool-only .card-finishing {
    display: none !important;
}

/* Single-grid elements should span full width */
.tiling-single-grid {
    grid-template-columns: 1fr !important;
}

/* App Footer */
.app-footer {
    text-align: center;
    padding: 2rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-top: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    margin-top: auto;
}

/* Print CSS */
@media print {
    body {
        background: #fff !important;
        color: #000 !important;
        min-height: auto;
    }
    
    .glass-bg-elements,
    .app-header,
    .hero-section,
    .project-type-section,
    .input-panel,
    .quote-header,
    .btn-secondary,
    .settings-drawer,
    .app-footer {
        display: none !important;
    }
    
    .calculator-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .panel.output-panel {
        background: transparent !important;
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
    }
    
    .quote-card {
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
        background: transparent !important;
        color: #000 !important;
        transform: none !important;
    }
    
    .quote-card-header {
        border-bottom-color: #000 !important;
    }
    
    .divider {
        border-top-color: #000 !important;
    }
    
    .total-row {
        border-top-color: #000 !important;
    }
    
    .highlight-text {
        background: none !important;
        -webkit-text-fill-color: initial !important;
        color: #000 !important;
        font-weight: 800;
    }
    
    .print-watermark-bg {
        display: none !important;
    }
}

/* Global Background Slideshow (fixed full-screen background) */
.global-bg-slideshow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2; /* Render behind all content and bubbles */
    overflow: hidden;
    pointer-events: none;
}

.global-bg-slideshow .slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    opacity: 0;
    transition: opacity 2s ease-in-out;
    z-index: 1;
}

.global-bg-slideshow .slide.active {
    opacity: 0.35;
    z-index: 2;
}

.global-bg-slideshow .slide-pic {
    flex: 1;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: all 0.5s ease-in-out;
}

/* Hide third image on tablets */
@media (max-width: 768px) {
    .global-bg-slideshow .slide-pic:nth-child(3) {
        display: none;
    }
}

/* Hide second and third image on mobile */
@media (max-width: 480px) {
    .global-bg-slideshow .slide-pic:nth-child(2),
    .global-bg-slideshow .slide-pic:nth-child(3) {
        display: none;
    }
}

.global-bg-slideshow .slideshow-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Soft overlay with radial fade so the edges blend into the pure white background */
    background: radial-gradient(circle, rgba(255, 255, 255, 0.02) 20%, rgba(255, 255, 255, 0.5) 75%, #ffffff 98%);
    z-index: 3;
}