/* ==========================================================================
   Your Reno Works - Modern Design System & Stylesheet
   Variant B: Clean Premium Trade (Manrope 800 / Manrope 400-600)
   Locality: Singapore (HDB, BTO, Resale, Condominium Specialist)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties & Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Core Brand & Architecture Palette (Strict adherence to design_brief.json) */
  --color-bg: #ffffff;
  --color-surface: #f8fafc;
  --color-surface-elevated: #ffffff;
  --color-text: #0f172a;
  --color-muted: #475569;
  --color-primary: #1f4b7a;
  --color-primary-hover: #163658;
  --color-primary-text: #ffffff;
  --color-accent: #85addc;
  --color-accent-light: #e8f0f8;
  --color-accent-hover: #6998cb;
  --color-dark: #0f1b29;
  --color-dark-surface: #172435;
  --color-dark-text: #ffffff;
  --color-dark-muted: #94a3b8;

  /* Functional & State Tokens */
  --color-border: #e2e8f0;
  --color-border-focus: #1f4b7a;
  --color-success: #15803d;
  --color-success-bg: #f0fdf4;
  --color-warning: #b45309;
  --color-gold: #f59e0b;

  /* Typography */
  --font-display: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing Scale (8pt System) */
  --space-2xs: 0.25rem;  /* 4px */
  --space-xs: 0.5rem;   /* 8px */
  --space-sm: 0.75rem;  /* 12px */
  --space-md: 1rem;     /* 16px */
  --space-lg: 1.5rem;   /* 24px */
  --space-xl: 2rem;     /* 32px */
  --space-2xl: 3rem;    /* 48px */
  --space-3xl: 4.5rem;  /* 72px */
  --space-4xl: 6rem;    /* 96px */

  /* Layout */
  --container-max: 1280px;
  --header-height: 84px;
  --header-height-mobile: 74px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Elevation & Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 25px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 35px -5px rgba(15, 23, 42, 0.12);
  --shadow-sticky: 0 4px 20px rgba(15, 27, 41, 0.08);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* --------------------------------------------------------------------------
   2. Reset & Base Typography
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  /* Never set overflow-x: hidden or overflow: auto on html/body to keep sticky header pinned */
  overflow-x: clip;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
  position: relative;
  font-weight: 400;
  color: var(--color-text);
  background-color: var(--color-bg);
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}

/* Accessible Focus Indicators */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Skip to Content Link (Accessibility) */
.skip-link {
  position: absolute;
  top: -9999px;
  left: var(--space-md);
  z-index: 99999;
  background: var(--color-primary);
  color: var(--color-primary-text);
  padding: var(--space-sm) var(--space-md);
  font-weight: 700;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-text);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 4.5vw + 0.5rem, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
}

h2 {
  font-size: clamp(1.65rem, 3vw + 0.5rem, 2.35rem);
  font-weight: 800;
  line-height: 1.2;
}

h3 {
  font-size: clamp(1.25rem, 2vw + 0.25rem, 1.65rem);
  font-weight: 700;
  line-height: 1.3;
}

h4 {
  font-size: 1.2rem;
  font-weight: 700;
}

p {
  margin-bottom: var(--space-md);
}

p:last-child {
  margin-bottom: 0;
}

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

.lead {
  font-size: clamp(1.05rem, 1.2vw + 0.2rem, 1.25rem);
  line-height: 1.6;
  color: var(--color-muted);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  background-color: var(--color-accent-light);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.eyebrow-dark {
  background-color: rgba(133, 173, 220, 0.2);
  color: var(--color-accent);
}

/* Container & Layout */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 4vw, 2.5rem);
  padding-right: clamp(1rem, 4vw, 2.5rem);
}

.section {
  padding-top: clamp(3rem, 6vw, 5.5rem);
  padding-bottom: clamp(3rem, 6vw, 5.5rem);
  position: relative;
}

.section-surface {
  background-color: var(--color-surface);
}

.section-dark {
  background-color: var(--color-dark);
  color: var(--color-dark-text);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--color-dark-text);
}

.section-header {
  max-width: 760px;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.section-header.text-center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-title {
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-muted);
  line-height: 1.6;
}

.section-dark .section-subtitle {
  color: var(--color-dark-muted);
}

/* --------------------------------------------------------------------------
   3. Buttons & Conversion Components
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
  min-height: 48px; /* Ergonomic touch target */
  min-width: 48px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-primary-text);
  border-color: var(--color-primary);
  box-shadow: 0 2px 6px rgba(31, 75, 122, 0.25);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-primary-text);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(31, 75, 122, 0.35);
}

.btn-secondary {
  background-color: #25D366; /* WhatsApp brand recognition */
  color: #ffffff;
  border-color: #25D366;
  box-shadow: 0 2px 6px rgba(37, 211, 102, 0.25);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: #1eb956;
  border-color: #1eb956;
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.35);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover,
.btn-outline:focus {
  background-color: var(--color-accent-light);
  color: var(--color-primary-hover);
}

.btn-outline-white {
  background-color: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline-white:hover,
.btn-outline-white:focus {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: #ffffff;
  color: #ffffff;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  min-height: 40px;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
  min-height: 52px;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
}

/* --------------------------------------------------------------------------
   4. Header & Persistent Navigation
   Strictly pinned position: sticky; top: 0 with NO overflow disabling wrappers
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition-fast);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sticky);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--space-md);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.brand-logo-img {
  width: auto;
  height: 52px;
  object-fit: contain;
}

.brand-title {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  line-height: 1.1;
}

.brand-tagline {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  text-transform: uppercase;
}

/* Desktop Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: var(--space-lg);
}

.nav-link {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: 700;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2.5px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header-phone-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  background-color: var(--color-accent-light);
  white-space: nowrap;
}

.header-phone-link:hover {
  background-color: #d8e6f5;
  color: var(--color-primary-hover);
}

/* Hamburger Toggle Button */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  color: var(--color-text);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: var(--header-height-mobile);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height-mobile));
  background-color: #ffffff;
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
  z-index: 999;
  overflow-y: auto;
  border-top: 1px solid var(--color-border);
  box-shadow: var(--shadow-xl);
}

.mobile-drawer.is-open {
  transform: translateX(0);
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-nav-link {
  display: block;
  font-size: 1.15rem;
  font-weight: 700;
  padding: var(--space-sm) 0;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-link.active {
  color: var(--color-primary);
}

.mobile-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: auto;
  padding-bottom: 5rem; /* Room for sticky bottom bar */
}

/* --------------------------------------------------------------------------
   5. Hero Showcase (Split Layout from design_brief.json)
   -------------------------------------------------------------------------- */
.hero-split {
  padding-top: clamp(2.5rem, 5vw, 4.5rem);
  padding-bottom: clamp(3rem, 6vw, 5.5rem);
  background: linear-gradient(180deg, #ffffff 0%, var(--color-surface) 100%);
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-proof-badge {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  background-color: #ffffff;
  border: 1px solid #dbeafe;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.hero-proof-badge .stars {
  color: var(--color-gold);
  letter-spacing: 0.05em;
}

.hero-headline {
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.hero-subheadline {
  font-size: clamp(1.05rem, 1.2vw + 0.1rem, 1.2rem);
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: var(--space-xl);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  width: 100%;
}

.hero-trust-bullets {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm) var(--space-md);
  width: 100%;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
}

.hero-bullet-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
}

.hero-bullet-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.hero-media-wrapper {
  position: relative;
}

.hero-media-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  background-color: #ffffff;
  aspect-ratio: 4 / 3;
}

.hero-media-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.hero-media-card:hover img {
  transform: scale(1.02);
}

.hero-floating-card {
  position: absolute;
  bottom: -1.5rem;
  left: -1.5rem;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.25rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  max-width: 320px;
  z-index: 2;
}

.floating-icon {
  width: 44px;
  height: 44px;
  background-color: var(--color-accent-light);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.floating-text strong {
  display: block;
  font-size: 0.95rem;
  color: var(--color-text);
  font-weight: 800;
}

.floating-text span {
  font-size: 0.8rem;
  color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   6. Trust & Accreditation Strip (Section 1: trust-credentials)
   -------------------------------------------------------------------------- */
.trust-strip {
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.trust-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.trust-icon-box {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.trust-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 0.2rem;
}

.trust-desc {
  font-size: 0.82rem;
  color: var(--color-muted);
  line-height: 1.45;
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   7. Signature Element: Draggable Before/After Comparison Slider
   (Section 2: before-after-transformations)
   -------------------------------------------------------------------------- */
.signature-slider-section {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.before-after-container {
  max-width: 980px;
  margin: 0 auto;
}

.ba-slider-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
  background-color: #000;
}

.ba-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.ba-image-before {
  z-index: 1;
}

.ba-image-after-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  overflow: hidden;
  z-index: 2;
  will-change: width;
}

.ba-image-after-wrapper .ba-image {
  width: 100%;
  height: 100%;
  /* Force the inside image to stay scaled to the parent container width */
  min-width: 980px;
}

/* Responsive adjustment for after image */
@media (max-width: 1024px) {
  .ba-image-after-wrapper .ba-image {
    min-width: 100vw;
  }
}

.ba-badge {
  position: absolute;
  top: var(--space-md);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  z-index: 4;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.ba-badge-before {
  right: var(--space-md);
  background-color: rgba(15, 23, 42, 0.75);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.ba-badge-after {
  left: var(--space-md);
  background-color: rgba(31, 75, 122, 0.9);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Interactive Divider Line */
.ba-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 3px;
  background-color: #ffffff;
  z-index: 5;
  transform: translateX(-50%);
  cursor: ew-resize;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.4);
}

.ba-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 44px;
  height: 44px;
  background-color: #ffffff;
  color: var(--color-primary);
  border-radius: var(--radius-full);
  transform: translate(-50%, -50%);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: ew-resize;
  border: 2px solid var(--color-primary);
}

.ba-range-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: ew-resize;
  z-index: 6;
  margin: 0;
}

/* Callout Tags under comparison slider */
.ba-callouts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.ba-callout-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.ba-callout-card h4 {
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
  color: var(--color-primary);
}

.ba-callout-card p {
  font-size: 0.82rem;
  color: var(--color-muted);
  line-height: 1.45;
}

/* --------------------------------------------------------------------------
   8. In-House Trade Services (Section 3: renovation-services)
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.service-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
}

.service-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.service-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.service-desc {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.55;
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

.service-features {
  list-style: none;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
  margin-bottom: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.service-feature-item {
  font-size: 0.82rem;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.service-feature-item svg {
  color: var(--color-success);
  flex-shrink: 0;
}

.service-link {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.service-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   9. Featured Portfolios Gallery (Section 4: featured-portfolios)
   -------------------------------------------------------------------------- */
.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
  justify-content: center;
}

.filter-btn {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-accent);
}

.filter-btn.active {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.portfolio-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.portfolio-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent);
}

.portfolio-thumb-wrapper {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-surface);
}

.portfolio-thumb-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.portfolio-card:hover .portfolio-thumb-wrapper img {
  transform: scale(1.05);
}

.portfolio-type-tag {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background-color: rgba(15, 23, 42, 0.8);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.portfolio-body {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.portfolio-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

.portfolio-meta {
  font-size: 0.82rem;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
}

.portfolio-desc {
  font-size: 0.88rem;
  color: var(--color-muted);
  line-height: 1.5;
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

.portfolio-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.highlight-badge {
  font-size: 0.72rem;
  font-weight: 600;
  background-color: var(--color-surface);
  color: var(--color-muted);
  border: 1px solid var(--color-border);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   10. Transparent 5-Step Process (Section 5: workflow-process)
   -------------------------------------------------------------------------- */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
  position: relative;
  margin-top: var(--space-xl);
}

.process-step {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  display: flex;
  flex-direction: column;
}

.step-num {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.step-title {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 0.45rem;
  color: var(--color-text);
}

.step-desc {
  font-size: 0.85rem;
  color: var(--color-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   11. Singapore Service Areas (Section 6: service-areas)
   -------------------------------------------------------------------------- */
.regions-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
}

.region-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.region-card h4 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.35rem;
}

.towns-list {
  list-style: none;
  font-size: 0.8rem;
  color: var(--color-muted);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

/* --------------------------------------------------------------------------
   12. Verified Client Reviews (Section 7: client-testimonials)
   -------------------------------------------------------------------------- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.review-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-stars {
  color: var(--color-gold);
  font-size: 1.05rem;
  margin-bottom: var(--space-sm);
  letter-spacing: 2px;
}

.review-quote {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  font-style: italic;
  flex-grow: 1;
}

.review-author-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-sm);
}

.author-name {
  font-weight: 800;
  font-size: 0.92rem;
  color: var(--color-text);
}

.review-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* --------------------------------------------------------------------------
   13. Showroom Experience (Section 8: showroom-experience)
   -------------------------------------------------------------------------- */
.showroom-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: center;
}

.showroom-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.info-block {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.info-text strong {
  display: block;
  font-size: 0.98rem;
  color: var(--color-text);
  margin-bottom: 0.2rem;
}

.info-text p {
  font-size: 0.88rem;
  color: var(--color-muted);
  margin-bottom: 0;
}

.map-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 16 / 11;
  background-color: var(--color-surface);
}

.map-wrapper iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* --------------------------------------------------------------------------
   14. Quotation Calculator Questionnaire (Section 9: quote-calculator)
   -------------------------------------------------------------------------- */
.quote-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 3rem);
  box-shadow: var(--shadow-xl);
  max-width: 900px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-weight: 700;
  font-size: 0.92rem;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(31, 75, 122, 0.15);
  outline: none;
}

.form-radio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xs);
}

.radio-tile {
  position: relative;
}

.radio-tile input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.radio-tile label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0.75rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  background-color: var(--color-surface);
  transition: all var(--transition-fast);
  min-height: 48px;
}

.radio-tile input:checked + label {
  border-color: var(--color-primary);
  background-color: var(--color-accent-light);
  color: var(--color-primary);
  font-weight: 700;
}

.form-checkbox-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xs);
}

.checkbox-tile {
  position: relative;
}

.checkbox-tile input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.checkbox-tile label {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0.65rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  background-color: var(--color-surface);
  transition: all var(--transition-fast);
  min-height: 48px;
}

.checkbox-tile input:checked + label {
  border-color: var(--color-primary);
  background-color: var(--color-accent-light);
  color: var(--color-primary);
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   15. Urgent Rectification Banner (Section 10: urgent-assistance)
   -------------------------------------------------------------------------- */
.urgent-banner {
  background: linear-gradient(135deg, var(--color-dark) 0%, #1a334d 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  box-shadow: var(--shadow-xl);
}

.urgent-content h3 {
  color: #ffffff;
  margin-bottom: 0.35rem;
}

.urgent-content p {
  color: var(--color-dark-muted);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.urgent-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   16. Accordion & FAQ Components (AEO & Answer Engines)
   -------------------------------------------------------------------------- */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.is-open {
  border-color: var(--color-primary);
}

.faq-button {
  width: 100%;
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text);
  gap: var(--space-md);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.faq-item.is-open .faq-icon {
  transform: rotate(180deg);
  background-color: var(--color-accent-light);
  color: var(--color-primary);
}

.faq-content {
  display: none;
  padding: 0 var(--space-lg) var(--space-lg) var(--space-lg);
  font-size: 0.92rem;
  color: var(--color-muted);
  line-height: 1.6;
}

.faq-item.is-open .faq-content {
  display: block;
}

/* --------------------------------------------------------------------------
   17. Footer Architecture
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-dark);
  color: var(--color-dark-text);
  padding-top: clamp(3rem, 6vw, 5rem);
  padding-bottom: clamp(2rem, 4vw, 3rem);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  margin-bottom: var(--space-3xl);
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: #ffffff;
}

.footer-logo img {
  height: 48px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-bio {
  font-size: 0.88rem;
  color: var(--color-dark-muted);
  line-height: 1.6;
}

.footer-heading {
  font-size: 1rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-link {
  color: var(--color-dark-muted);
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: #ffffff;
}

.footer-contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--color-dark-muted);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.footer-contact-item svg {
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-contact-item a {
  color: var(--color-dark-muted);
}

.footer-contact-item a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  font-size: 0.8rem;
  color: var(--color-dark-muted);
}

.footer-credits {
  font-size: 0.78rem;
  color: #64748b;
}

/* --------------------------------------------------------------------------
   18. Back to Top Button & Mobile Sticky Bottom Bar
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 5.5rem; /* Sits above sticky mobile bar */
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-normal);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
}

/* Sticky Mobile Bottom CTA Bar (Playbook mandate) */
.mobile-sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 1px solid var(--color-border);
  padding: 0.65rem var(--space-md);
  display: none;
  z-index: 950;
  box-shadow: 0 -4px 15px rgba(0, 0, 0, 0.08);
}

.mobile-sticky-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  width: 100%;
}

.mobile-sticky-grid .btn {
  font-size: 0.88rem;
  padding: 0.65rem 0.5rem;
  min-height: 44px;
}

/* --------------------------------------------------------------------------
   19. Motion & Reveal-on-Scroll Effects
   Strictly inside @media (prefers-reduced-motion: no-preference)
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 500ms cubic-bezier(0.16, 1, 0.3, 1),
                transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
  }

  .reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --------------------------------------------------------------------------
   20. Responsive Media Queries (Mobile-First Architecture)
   -------------------------------------------------------------------------- */
/* Mobile: 320px - 767px */
@media (max-width: 767px) {
  .site-header {
    height: var(--header-height-mobile);
  }

  .header-container {
    height: var(--header-height-mobile);
  }

  .main-nav {
    display: none;
  }

  .header-actions {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .mobile-sticky-bar {
    display: block;
  }

  /* Split hero to single column */
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .hero-floating-card {
    position: static;
    margin-top: var(--space-md);
    max-width: 100%;
  }

  .trust-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .process-timeline {
    grid-template-columns: 1fr;
  }

  .regions-grid {
    grid-template-columns: 1fr 1fr;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .showroom-grid {
    grid-template-columns: 1fr;
  }

  .form-radio-grid {
    grid-template-columns: 1fr 1fr;
  }

  .form-checkbox-grid {
    grid-template-columns: 1fr 1fr;
  }

  .urgent-banner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .ba-callouts {
    grid-template-columns: 1fr;
  }

  .hero-trust-bullets {
    grid-template-columns: 1fr;
  }
}

/* Tablet: 768px - 1024px */
@media (min-width: 768px) and (max-width: 1024px) {
  .site-header {
    height: var(--header-height);
  }

  .main-nav {
    display: flex;
    gap: var(--space-md);
  }

  .nav-list {
    gap: var(--space-md);
  }

  .menu-toggle {
    display: none;
  }

  .mobile-drawer {
    display: none;
  }

  .mobile-sticky-bar {
    display: none;
  }

  .back-to-top {
    bottom: var(--space-lg);
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-timeline {
    grid-template-columns: repeat(3, 1fr);
  }

  .regions-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Desktop: 1025px+ */
@media (min-width: 1025px) {
  .mobile-sticky-bar {
    display: none;
  }

  .back-to-top {
    bottom: var(--space-xl);
  }
}