/* ==========================================================================
   GradeGurus - Professional Academic Services Website
   Author: GradeGurus Team, Vijayawada, Andhra Pradesh, India
   Design System & Main Stylesheet (Vanilla CSS)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Variables & Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand Palette */
  --color-primary: #FF790F;
  --color-primary-hover: #F46A0B;
  --color-primary-light: #FFF4EB;
  --color-primary-subtle: #FFF9F3;
  --color-primary-glow: rgba(255, 121, 15, 0.22);

  /* Dark Authority & Neutral */
  --color-charcoal: #202832;
  --color-charcoal-light: #2D3748;
  --color-charcoal-muted: #3F4A59;
  --color-charcoal-dark: #151B22;

  /* Neutrals & Backgrounds */
  --color-white: #FFFFFF;
  --color-offwhite: #FFF9F3;
  --color-neutral-bg: #F8F9FA;
  --color-neutral-soft: #F1F3F5;
  --color-border: #E2E8F0;
  --color-border-subtle: #EDF2F7;

  /* Typography Colors */
  --color-text-main: #202832;
  --color-text-muted: #5A6578;
  --color-text-light: #7E8B9E;
  --color-text-inverted: #FFFFFF;

  /* Feedback Colors */
  --color-success: #15803D;
  --color-success-bg: #DCFCE7;
  --color-error: #DC2626;
  --color-error-bg: #FEE2E2;

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-pill: 9999px;

  /* Elevation Shadows */
  --shadow-sm: 0 1px 3px rgba(32, 40, 50, 0.05), 0 1px 2px rgba(32, 40, 50, 0.04);
  --shadow-md: 0 4px 14px rgba(32, 40, 50, 0.06), 0 2px 6px rgba(32, 40, 50, 0.03);
  --shadow-lg: 0 12px 28px rgba(32, 40, 50, 0.08), 0 4px 10px rgba(32, 40, 50, 0.03);
  --shadow-xl: 0 20px 42px rgba(32, 40, 50, 0.12), 0 6px 14px rgba(32, 40, 50, 0.04);
  --shadow-orange: 0 8px 24px rgba(255, 121, 15, 0.28);
  --shadow-orange-sm: 0 4px 12px rgba(255, 121, 15, 0.2);

  /* Transitions */
  --transition-fast: 0.18s ease;
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-max-width: 1220px;
  --header-height: 80px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-main);
  background-color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
}

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

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

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* Accessibility: Visible Focus Indicators */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Skip link for keyboard accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--color-charcoal);
  color: var(--color-white);
  padding: 12px 20px;
  z-index: 9999;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top var(--transition-fast);
  box-shadow: var(--shadow-lg);
}

.skip-link:focus {
  top: 16px;
}

/* --------------------------------------------------------------------------
   3. Typography & Utility Classes
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-charcoal);
  line-height: 1.25;
  font-weight: 700;
}

.section-container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section-padding {
  padding-top: 96px;
  padding-bottom: 96px;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-header.text-left {
  text-align: left;
  margin-left: 0;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: var(--color-primary-light);
  color: var(--color-primary-hover);
  border: 1px solid rgba(255, 121, 15, 0.2);
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.25rem;
  color: var(--color-charcoal);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.highlight-orange {
  color: var(--color-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  white-space: nowrap;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-orange-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-orange);
  transform: translateY(-2px);
}

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

.btn-secondary {
  background-color: transparent;
  color: var(--color-charcoal);
  border: 1.5px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-charcoal);
  background-color: var(--color-neutral-soft);
  transform: translateY(-2px);
}

.btn-secondary-white {
  background-color: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary-white:hover {
  border-color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background-color: #25D366;
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.25);
}

.btn-whatsapp:hover {
  background-color: #20BA5A;
  box-shadow: 0 8px 22px rgba(37, 211, 102, 0.35);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
}

.btn-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   4. Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.85);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 20px rgba(32, 40, 50, 0.06);
  height: 72px;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 28px;
  gap: 20px;
}

.brand-logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-img {
  height: 42px;
  width: 42px;
  object-fit: contain;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.brand-logo-link:hover .brand-logo-img {
  transform: scale(1.05);
}

.brand-text-block {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-charcoal);
  text-transform: uppercase;
  line-height: 1.1;
  white-space: nowrap;
}

.brand-tagline-sub {
  font-size: 0.6875rem;
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.main-navigation {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1 1 auto;
}

.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 1.4vw, 22px);
  margin: 0;
  padding: 0;
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--color-charcoal-muted);
  position: relative;
  padding: 8px 6px;
  transition: color var(--transition-fast);
  white-space: nowrap;
  display: inline-block;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 6px;
  right: 6px;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
  border-radius: var(--radius-pill);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-charcoal);
  font-weight: 600;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.header-phone-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-charcoal);
  white-space: nowrap;
  flex-shrink: 0;
}

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

.phone-icon-pill {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Mobile Toggle */
.mobile-nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  background-color: var(--color-white);
  color: var(--color-charcoal);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mobile-nav-toggle:hover,
.mobile-nav-toggle[aria-expanded="true"] {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.mobile-nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-charcoal);
  transition: all var(--transition-normal);
  position: relative;
}

.hamburger-line::before,
.hamburger-line::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 2px;
  background-color: var(--color-charcoal);
  transition: all var(--transition-normal);
}

.hamburger-line::before {
  top: -6px;
}

.hamburger-line::after {
  top: 6px;
}

/* Mobile Active State */
.mobile-nav-toggle[aria-expanded="true"] .hamburger-line {
  background-color: transparent;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line::before {
  top: 0;
  transform: rotate(45deg);
  background-color: var(--color-primary);
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line::after {
  top: 0;
  transform: rotate(-45deg);
  background-color: var(--color-primary);
}

/* Mobile Drawer Overlay */
.mobile-drawer {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height));
  height: calc(100dvh - var(--header-height));
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 16px 18px 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 14px;
  transform: translateX(100%);
  transition: transform var(--transition-smooth);
  z-index: 999;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  border-top: 1px solid var(--color-border);
}

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

.mobile-nav {
  width: 100%;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav-link {
  font-family: var(--font-heading);
  font-size: 0.95rem; /* Proportional, sleek mobile size */
  font-weight: 600;
  color: var(--color-charcoal);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.mobile-nav-arrow {
  color: var(--color-text-light);
  flex-shrink: 0;
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link:focus {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-bottom-color: transparent;
}

.mobile-nav-link:hover .mobile-nav-arrow,
.mobile-nav-link:focus .mobile-nav-arrow {
  color: var(--color-primary);
  transform: translateX(3px);
}

.mobile-nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  font-weight: 700;
  border-bottom-color: transparent;
}

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

.mobile-drawer-footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}

.mobile-drawer-footer .btn {
  padding: 11px 16px;
  font-size: 0.875rem;
}

/* --------------------------------------------------------------------------
   5. Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  padding-top: calc(var(--header-height) + 54px);
  padding-bottom: 84px;
  background: linear-gradient(180deg, var(--color-offwhite) 0%, var(--color-white) 100%);
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 45%;
  height: 100%;
  background: radial-gradient(circle at top right, rgba(255, 121, 15, 0.06), transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-tagline-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: var(--color-white);
  border: 1px solid rgba(255, 121, 15, 0.3);
  border-radius: var(--radius-pill);
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--color-charcoal);
  box-shadow: var(--shadow-sm);
}

.hero-tagline-badge .badge-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
}

.integrity-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background-color: #F0FDF4;
  border: 1px solid #BBF7D0;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 700;
  color: #166534;
}

.hero-title {
  font-size: 3.25rem;
  letter-spacing: -0.03em;
  color: var(--color-charcoal);
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-title .emphasis {
  color: var(--color-primary);
  display: inline-block;
  position: relative;
}

.hero-description {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-service-chips {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.hero-chips-title {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--color-text-light);
}

.chips-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-charcoal-light);
  box-shadow: 0 1px 2px rgba(32, 40, 50, 0.03);
}

.chip-item svg {
  color: var(--color-primary);
}

/* Hero Visual Composition */
.hero-visual-wrapper {
  position: relative;
  z-index: 1;
}

.hero-image-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 6px solid var(--color-white);
  background-color: var(--color-charcoal-subtle);
}

.hero-main-img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.hero-visual-wrapper:hover .hero-main-img {
  transform: scale(1.02);
}

/* Floating Trust Cards */
.hero-floating-card {
  position: absolute;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(226, 232, 240, 0.9);
  z-index: 3;
}

.floating-card-top {
  top: 24px;
  left: -28px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.floating-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-orange-sm);
}

.floating-card-text {
  display: flex;
  flex-direction: column;
}

.floating-card-title {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-charcoal);
  line-height: 1.2;
}

.floating-card-sub {
  font-size: 0.775rem;
  color: var(--color-text-muted);
}

.floating-card-bottom {
  bottom: -24px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  background-color: var(--color-charcoal);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.floating-card-bottom .floating-card-title {
  color: var(--color-white);
}

.floating-card-bottom .floating-card-sub {
  color: #94A3B8;
}

.badge-location-pin {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: rgba(255, 121, 15, 0.15);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   6. Company Introduction Section
   -------------------------------------------------------------------------- */
.intro-section {
  background-color: var(--color-white);
  position: relative;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 56px;
}

.intro-lead {
  font-size: 1.2rem;
  line-height: 1.75;
  color: var(--color-charcoal);
  font-weight: 500;
}

.intro-meta-box {
  background-color: var(--color-neutral-bg);
  border-radius: var(--radius-xl);
  padding: 36px;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.intro-meta-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.meta-icon-bubble {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.meta-item-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: 4px;
}

.meta-item-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* 3 Core Principles */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.principle-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition-normal);
  position: relative;
}

.principle-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 28px;
  right: 28px;
  height: 3px;
  background-color: var(--color-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
  border-radius: var(--radius-pill);
}

.principle-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 121, 15, 0.3);
}

.principle-card:hover::before {
  opacity: 1;
}

.principle-number {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: rgba(255, 121, 15, 0.25);
  margin-bottom: 12px;
  line-height: 1;
}

.principle-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: 10px;
}

.principle-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   7. Services Section
   -------------------------------------------------------------------------- */
.services-section {
  background-color: var(--color-neutral-bg);
  position: relative;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(255, 121, 15, 0.4);
}

.service-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: all var(--transition-normal);
}

.service-card:hover .service-icon-wrapper {
  background: var(--color-primary);
  color: var(--color-white);
  transform: scale(1.05);
  box-shadow: var(--shadow-orange-sm);
}

.service-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: 14px;
  line-height: 1.35;
}

.service-description {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 28px;
  flex-grow: 1;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.service-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  background-color: var(--color-neutral-soft);
  color: var(--color-charcoal-muted);
  border-radius: var(--radius-pill);
}

.service-enquire-btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 12px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  background-color: var(--color-neutral-soft);
  color: var(--color-charcoal);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.service-enquire-btn:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.service-enquire-btn .arrow-icon {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.service-enquire-btn:hover .arrow-icon {
  transform: translateX(4px);
}

/* Service Note Notice */
.services-note-banner {
  margin-top: 48px;
  padding: 20px 28px;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 16px;
}

.note-banner-icon {
  color: var(--color-primary);
  flex-shrink: 0;
}

.note-banner-text {
  font-size: 0.8875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.note-banner-text strong {
  color: var(--color-charcoal);
}

/* --------------------------------------------------------------------------
   8. Why Choose GradeGurus
   -------------------------------------------------------------------------- */
.why-section {
  background-color: var(--color-white);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.why-card {
  padding: 32px 28px;
  background-color: var(--color-offwhite);
  border: 1px solid rgba(255, 121, 15, 0.14);
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.why-card:hover {
  transform: translateY(-4px);
  background-color: var(--color-white);
  border-color: rgba(255, 121, 15, 0.4);
  box-shadow: var(--shadow-lg);
}

.why-icon-box {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 121, 15, 0.15);
}

.why-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: 10px;
}

.why-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   9. Working Process Section (Horizontal Desktop, Vertical Mobile)
   -------------------------------------------------------------------------- */
.process-section {
  background-color: var(--color-neutral-bg);
  position: relative;
}

.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  margin-top: 48px;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 60px;
  right: 60px;
  height: 2px;
  background: repeating-linear-gradient(to right, var(--color-primary) 0, var(--color-primary) 8px, transparent 8px, transparent 16px);
  z-index: 1;
}

.process-step-card {
  position: relative;
  z-index: 2;
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.process-step-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.process-step-badge {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: var(--shadow-orange-sm);
}

.step-number-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.step-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: 12px;
  line-height: 1.35;
}

.step-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   10. Trust & Academic Standards Section
   -------------------------------------------------------------------------- */
.trust-section {
  background-color: var(--color-white);
}

.trust-card-main {
  background: linear-gradient(145deg, #1A212B 0%, #202832 100%);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.trust-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.trust-title {
  color: var(--color-white);
  font-size: 2.25rem;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.trust-lead {
  color: #CBD5E1;
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 32px;
}

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

.trust-check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.925rem;
  color: #E2E8F0;
  font-weight: 500;
}

.check-icon-circle {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-pill);
  background-color: rgba(255, 121, 15, 0.2);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.academic-integrity-box {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
}

.integrity-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.integrity-shield-icon {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

.integrity-title {
  color: var(--color-white);
  font-size: 1.15rem;
  font-weight: 700;
}

.integrity-statement-text {
  font-size: 0.95rem;
  color: #CBD5E1;
  line-height: 1.7;
  font-style: italic;
  border-left: 3px solid var(--color-primary);
  padding-left: 16px;
  margin-bottom: 20px;
}

.integrity-note {
  font-size: 0.8125rem;
  color: #94A3B8;
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   11. FAQ Accordion Section
   -------------------------------------------------------------------------- */
.faq-section {
  background-color: var(--color-neutral-bg);
}

.faq-accordion-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.faq-item.is-active {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.faq-question-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 28px;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-charcoal);
  transition: color var(--transition-fast);
}

.faq-question-btn:hover {
  color: var(--color-primary);
}

.faq-chevron {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-charcoal-muted);
  transition: transform var(--transition-normal), color var(--transition-fast);
}

.faq-item.is-active .faq-chevron {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-answer-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-answer-content {
  padding: 0 28px 24px;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.faq-answer-content p + p {
  margin-top: 10px;
}

/* --------------------------------------------------------------------------
   12. Contact & Enquiry Section
   -------------------------------------------------------------------------- */
.contact-section {
  background-color: var(--color-white);
  position: relative;
}

.contact-layout-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 48px;
  align-items: flex-start;
}

/* Left: Contact Info Cards */
.contact-info-column {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-highlight-box {
  background: linear-gradient(145deg, var(--color-offwhite) 0%, #FFFFFF 100%);
  border: 1px solid rgba(255, 121, 15, 0.2);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
}

.contact-highlight-box h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.contact-highlight-box p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 28px;
}

.contact-cards-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-method-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.contact-method-card:hover {
  transform: translateX(4px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.method-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.method-icon-box.whatsapp-green {
  background-color: #E8FBF0;
  color: #25D366;
}

.method-info {
  display: flex;
  flex-direction: column;
}

.method-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
}

.method-value {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-top: 2px;
}

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

/* Location Card */
.contact-location-card {
  padding: 24px;
  background-color: var(--color-neutral-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.location-title {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-charcoal);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.location-desc {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Right: Form Card */
.enquiry-form-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.form-card-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.form-card-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: 6px;
}

.form-card-sub {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.form-fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group-full {
  grid-column: 1 / -1;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-charcoal);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.required-indicator {
  color: var(--color-primary);
  margin-left: 2px;
}

.optional-tag {
  font-size: 0.75rem;
  color: var(--color-text-light);
  font-weight: 400;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-neutral-bg);
  font-size: 0.9375rem;
  color: var(--color-charcoal);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-white);
  box-shadow: 0 0 0 3px rgba(255, 121, 15, 0.15);
}

.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid {
  border-color: var(--color-error);
  background-color: #FFF5F5;
}

.input-error-msg {
  font-size: 0.775rem;
  color: var(--color-error);
  display: none;
}

.form-input.is-invalid + .input-error-msg,
.form-select.is-invalid + .input-error-msg,
.form-textarea.is-invalid + .input-error-msg {
  display: block;
}

.form-textarea {
  resize: vertical;
  min-height: 110px;
}

/* Consent Checkbox */
.form-consent-box {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 6px;
}

.form-checkbox {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  margin-top: 3px;
  cursor: pointer;
}

.consent-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  cursor: pointer;
}



/* --------------------------------------------------------------------------
   13. Static Enquiry Modal / WhatsApp Dispatch Dialog
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(32, 40, 50, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px) scale(0.97);
  transition: transform var(--transition-smooth);
}

.modal-overlay.is-visible .modal-card {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: 24px 28px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-charcoal);
}

.modal-close-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-charcoal-muted);
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background-color: var(--color-neutral-soft);
  color: var(--color-charcoal);
}

.modal-body {
  padding: 28px;
}

.modal-notice-banner {
  background-color: var(--color-primary-light);
  border: 1px solid rgba(255, 121, 15, 0.25);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 0.875rem;
  color: var(--color-charcoal);
  margin-bottom: 20px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.message-preview-container {
  background-color: #FAFBFD;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px;
  font-family: monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-charcoal);
  white-space: pre-wrap;
  margin-bottom: 24px;
  max-height: 200px;
  overflow-y: auto;
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

/* --------------------------------------------------------------------------
   14. Final Call to Action Section
   -------------------------------------------------------------------------- */
.cta-banner-section {
  background: linear-gradient(135deg, #18202A 0%, var(--color-charcoal) 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.cta-banner-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 121, 15, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-card-content {
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.cta-title {
  color: var(--color-white);
  font-size: 2.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.cta-text {
  font-size: 1.15rem;
  color: #CBD5E1;
  line-height: 1.7;
  margin-bottom: 36px;
}

.cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   15. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-charcoal-dark);
  color: #94A3B8;
  padding-top: 72px;
  padding-bottom: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr 1.2fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.footer-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo-img {
  height: 42px;
  width: auto;
  object-fit: contain;
  background-color: var(--color-white);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.footer-brand-name {
  color: var(--color-white);
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  font-weight: 800;
}

.footer-brand-desc {
  font-size: 0.9rem;
  line-height: 1.65;
  color: #94A3B8;
  max-width: 320px;
}

.footer-col-title {
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: var(--radius-pill);
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  font-size: 0.9rem;
  color: #94A3B8;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-link:hover {
  color: var(--color-primary);
  transform: translateX(3px);
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9rem;
}

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

.footer-contact-item a:hover {
  color: var(--color-white);
}

.footer-bottom-bar {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8125rem;
  color: #64748B;
}

.footer-legal-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.legal-link {
  color: #64748B;
  transition: color var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   16. Floating Elements: Back-to-Top & WhatsApp Quick Button
   -------------------------------------------------------------------------- */
.floating-actions-container {
  position: fixed;
  bottom: 28px;
  right: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 990;
}



.btn-back-to-top {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
  background-color: var(--color-white);
  color: var(--color-charcoal);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: all var(--transition-normal);
}

.btn-back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.btn-back-to-top:hover {
  background-color: var(--color-charcoal);
  color: var(--color-white);
  transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   17. Responsive Breakpoints
   -------------------------------------------------------------------------- */
/* Compact Desktop / Small Laptop: 1200px */
@media (max-width: 1200px) {
  .nav-container {
    padding: 0 20px;
    gap: 12px;
  }

  .nav-list {
    gap: 10px;
  }

  .nav-link {
    font-size: 0.85rem;
    padding: 6px 3px;
  }

  .header-phone-link span:not(.phone-icon-pill) {
    display: none; /* Show phone icon pill only on tight laptop screens */
  }

  .header-cta-group {
    gap: 10px;
  }

  .btn {
    padding: 10px 16px;
    font-size: 0.875rem;
  }
}

/* Tablet & Mobile Navigation Switch: 1040px */
@media (max-width: 1040px) {
  .section-padding {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .main-navigation,
  .header-cta-group {
    display: none;
  }

  .mobile-nav-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-visual-wrapper {
    max-width: 650px;
    margin: 0 auto;
  }

  .intro-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

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

  .process-timeline {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .process-timeline::before {
    display: none;
  }

  .trust-content-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .contact-layout-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

/* Mobile Devices: 768px */
@media (max-width: 768px) {
  :root {
    --header-height: 66px;
  }

  .site-header {
    height: var(--header-height);
  }

  .brand-logo-img {
    height: 36px;
    width: 36px;
  }

  .brand-name {
    font-size: 1.1rem;
    letter-spacing: 0.06em;
  }

  .brand-tagline-sub {
    font-size: 0.625rem;
  }

  .section-padding {
    padding-top: 54px;
    padding-bottom: 54px;
  }

  .section-title {
    font-size: 1.85rem;
  }

  .section-subtitle {
    font-size: 0.95rem;
  }

  .hero-section {
    padding-top: calc(var(--header-height) + 26px);
    padding-bottom: 50px;
  }

  .hero-title {
    font-size: clamp(1.85rem, 6vw, 2.25rem);
    line-height: 1.2;
  }

  .hero-description {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 24px;
  }

  .hero-tagline-badge,
  .integrity-pill {
    font-size: 0.775rem;
    padding: 5px 11px;
  }

  .hero-actions {
    margin-bottom: 28px;
  }

  .btn {
    white-space: normal;
    text-align: center;
  }

  .hero-main-img {
    height: 340px;
  }

  .floating-card-top {
    left: 8px;
    top: 12px;
    padding: 12px 14px;
  }

  .floating-card-bottom {
    right: 8px;
    bottom: -16px;
    padding: 12px 14px;
  }

  .principles-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .principle-card {
    padding: 24px 20px;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .service-card {
    padding: 28px 22px;
  }

  .service-title {
    font-size: 1.18rem;
  }

  .service-description {
    font-size: 0.91rem;
    margin-bottom: 20px;
  }

  .services-note-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 18px 20px;
  }

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

  .process-timeline {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .trust-card-main {
    padding: 30px 20px;
  }

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

  .faq-question-btn {
    padding: 18px 20px;
    font-size: 0.975rem;
    gap: 14px;
  }

  .faq-answer-content {
    padding: 0 20px 20px;
    font-size: 0.91rem;
  }

  .contact-highlight-box {
    padding: 28px 22px;
  }

  .contact-method-card {
    padding: 16px 18px;
  }

  .enquiry-form-card {
    padding: 24px 18px;
  }

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

  #submitEnquiryBtn {
    padding: 13px 18px;
    font-size: 0.925rem;
    white-space: normal;
    text-align: center;
    line-height: 1.35;
  }

  .cta-card-content {
    padding: 44px 24px;
  }

  .cta-title {
    font-size: 1.85rem;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom-bar {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  /* Modal responsiveness */
  .modal-overlay {
    padding: 12px;
  }

  .modal-card {
    max-height: 92vh;
    border-radius: var(--radius-lg);
  }

  .modal-header {
    padding: 16px 20px;
  }

  .modal-title {
    font-size: 1.1rem;
  }

  .modal-body {
    padding: 18px 16px;
  }

  .message-preview-container {
    padding: 14px;
    font-size: 0.8rem;
    max-height: 170px;
    margin-bottom: 18px;
  }

  /* Floating Quick Action Buttons */
  .floating-actions-container {
    bottom: 16px;
    right: 16px;
  }

  .btn-back-to-top {
    width: 40px;
    height: 40px;
  }
}

/* Mobile Screens: 480px and below */
@media (max-width: 480px) {
  .section-padding {
    padding-top: 42px;
    padding-bottom: 42px;
  }

  .section-container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .section-subtitle {
    font-size: 0.9rem;
  }

  .hero-title {
    font-size: 1.85rem;
  }

  .hero-description {
    font-size: 0.925rem;
    margin-bottom: 22px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .floating-card-top,
  .floating-card-bottom {
    position: static;
    margin-top: 10px;
    width: 100%;
    padding: 12px 14px;
  }

  .hero-image-frame {
    border-width: 3px;
  }

  .hero-main-img {
    height: 260px;
  }

  .service-card {
    padding: 22px 16px;
  }

  .service-icon-wrapper {
    width: 46px;
    height: 46px;
    margin-bottom: 16px;
  }

  .service-title {
    font-size: 1.12rem;
  }

  .service-enquire-btn {
    padding: 10px 14px;
    font-size: 0.85rem;
  }

  .faq-question-btn {
    padding: 16px 16px;
    font-size: 0.93rem;
    gap: 10px;
  }

  .faq-answer-content {
    padding: 0 16px 16px;
    font-size: 0.88rem;
  }

  .contact-highlight-box {
    padding: 24px 18px;
  }

  .contact-method-card {
    padding: 14px 16px;
    gap: 14px;
  }

  .method-icon-box {
    width: 42px;
    height: 42px;
  }

  .method-value {
    font-size: 0.95rem;
  }

  .cta-card-content {
    padding: 34px 18px;
  }

  .cta-title {
    font-size: 1.6rem;
  }

  .cta-buttons {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .cta-buttons .btn {
    width: 100%;
  }

  .modal-actions-grid {
    grid-template-columns: 1fr;
  }
}

/* Small Mobile Screens: 360px and below */
@media (max-width: 360px) {
  .section-container {
    padding-left: 14px;
    padding-right: 14px;
  }

  .brand-name {
    font-size: 1rem;
    letter-spacing: 0.04em;
  }

  .brand-tagline-sub {
    font-size: 0.58rem;
  }

  .hero-title {
    font-size: 1.65rem;
  }

  .btn {
    padding: 11px 14px;
    font-size: 0.85rem;
  }

  #submitEnquiryBtn {
    font-size: 0.875rem;
    padding: 12px 10px;
  }
}

/* --------------------------------------------------------------------------
   18. Reduced Motion Accessibility
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}