/*
 * 45BLACK Website Styles v3.0
 * ======================
 * Peter Saville Blue Monday Edition | November 2025
 * Dark mode design with flat colour blocks - NO GRADIENTS
 * 
 * 45black Limited | Company Number 16860363
 */

/* ═══════════════════════════════════════════════════
   CSS VARIABLES - Brand Guidelines v3.0
   ═══════════════════════════════════════════════════ */

:root {
  /* TIER 1: Foundation */
  --45b-black: #000000;
  --45b-white: #FFFFFF;
  --45b-charcoal: #1A1C20;
  
  /* TIER 2: Saville Signature Six-Block (in order) */
  --45b-green: #2E7D32;
  --45b-teal: #0097A7;
  --45b-blue: #1565C0;
  --45b-purple: #7B1FA2;
  --45b-coral: #F26736;
  --45b-orange: #F57C00;
  
  /* Primary Accent Pairing: Blue Monday */
  --45b-yellow: #FFD54F;
  --45b-accent-primary: var(--45b-blue);
  --45b-accent-secondary: var(--45b-yellow);
  
  /* TIER 3: Functional Grays */
  --45b-cool-gray: #A1A0A8;
  --45b-steel-gray: #909DA3;
  --45b-blue-gray: #939BA6;
  --45b-light-gray: #F5F5F5;
  
  /* Dark Mode Surfaces */
  --surface-900: #0A0A0A;
  --surface-800: #141414;
  --surface-700: #1A1A1A;
  --surface-600: #242424;
  --surface-500: #333333;
  --surface-400: #4A4A4A;
  
  /* Semantic Text Tokens */
  --text-primary: var(--45b-white);
  --text-secondary: #B8B8B8;
  --text-muted: #888888;
  --text-subtle: #666666;
  --text-link: var(--45b-blue);
  --text-link-hover: #2E6DB4;
  
  /* Typography - IBM Plex Sans (v3 spec) */
  --45b-font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --45b-font-mono: 'IBM Plex Mono', 'SF Mono', 'Monaco', 'Consolas', monospace;
  --45b-font-serif: 'IBM Plex Serif', Georgia, 'Times New Roman', serif;

  /* Type Scale (v3 spec) */
  --text-xs: 0.75rem;    /* 12px - Caption */
  --text-sm: 0.875rem;   /* 14px - Caption */
  --text-base: 1rem;     /* 16px - Body */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px - H3 */
  --text-2xl: 1.5rem;    /* 24px - H2 */
  --text-3xl: 2rem;      /* 32px - H1 */
  --text-4xl: 3rem;      /* 48px - Display */
  --text-5xl: 4rem;      /* 64px - Display */

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 72px;
  --color-bar-height: 6px;
}

/* ═══════════════════════════════════════════════════
   GOOGLE FONTS - IBM Plex Sans (v3 spec)
   ═══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ═══════════════════════════════════════════════════
   RESET & BASE
   ═══════════════════════════════════════════════════ */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--45b-font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--surface-900);
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--text-link-hover);
}

a:visited {
  color: var(--45b-purple);
}

img {
  max-width: 100%;
  height: auto;
}

code, pre {
  font-family: var(--45b-font-mono);
}

/* ═══════════════════════════════════════════════════
   SAVILLE CODE BAR - Six-Block Signature
   Order: Green → Teal → Blue → Purple → Coral → Orange
   NEVER varies. Equal width blocks. No gradients.
   ═══════════════════════════════════════════════════ */

.color-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--color-bar-height);
  display: flex;
  z-index: 1000;
}

.color-bar__block {
  flex: 1;
  height: 100%;
}

.color-bar__block--green { background-color: var(--45b-green); }
.color-bar__block--teal { background-color: var(--45b-teal); }
.color-bar__block--blue { background-color: var(--45b-blue); }
.color-bar__block--purple { background-color: var(--45b-purple); }
.color-bar__block--coral { background-color: var(--45b-coral); }
.color-bar__block--orange { background-color: var(--45b-orange); }

/* ═══════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════ */

.header {
  position: fixed;
  top: var(--color-bar-height);
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--surface-900);
  border-bottom: 1px solid var(--surface-600);
  z-index: 999;
}

.header__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  text-decoration: none;
}

.header__wordmark {
  font-family: var(--45b-font-sans);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text-primary);
}

.header__tagline {
  font-family: var(--45b-font-sans);
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--text-muted);
  display: none;
}

@media (min-width: 768px) {
  .header__tagline {
    display: inline;
  }
}

.header__nav {
  display: none;
  align-items: center;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .header__nav {
    display: flex;
  }
}

.header__nav-link {
  font-family: var(--45b-font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.header__nav-link:visited {
  color: var(--text-secondary);
}

.header__nav-link--cta {
  background: var(--text-primary);
  color: var(--surface-900);
  padding: 10px 20px;
  font-weight: 600;
  transition: background 0.2s ease, color 0.2s ease;
}

.header__nav-link--cta:hover {
  background: var(--45b-accent-primary);
  color: var(--text-primary);
}

.header__nav-link--cta:visited {
  color: var(--surface-900);
}

/* Mobile menu button */
.header__menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.header__menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: transform 0.2s ease;
}

@media (min-width: 768px) {
  .header__menu-btn {
    display: none;
  }
}

/* Mobile nav overlay */
.mobile-nav {
  position: fixed;
  top: calc(var(--color-bar-height) + var(--header-height));
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--surface-800);
  padding: var(--space-xl);
  display: none;
  flex-direction: column;
  gap: var(--space-lg);
  z-index: 998;
}

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

.mobile-nav__link {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--surface-600);
}

/* ═══════════════════════════════════════════════════
   MAIN CONTENT & SECTIONS
   ═══════════════════════════════════════════════════ */

.main {
  padding-top: calc(var(--color-bar-height) + var(--header-height));
}

.section {
  padding: var(--space-4xl) var(--space-lg);
}

.section--hero {
  padding: var(--space-5xl) var(--space-lg);
  min-height: calc(100vh - var(--color-bar-height) - var(--header-height));
  display: flex;
  align-items: center;
}

.section--dark {
  background: var(--surface-800);
}

.section--darker {
  background: var(--surface-700);
}

.section__container {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

/* ═══════════════════════════════════════════════════
   TYPOGRAPHY - IBM Plex Sans System (v3 spec)
   Minimum body: 16px | Line height: 1.5+ | Max width: 80ch
   ═══════════════════════════════════════════════════ */

.headline-xl {
  font-family: var(--45b-font-sans);
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.headline-lg {
  font-family: var(--45b-font-sans);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.headline-md {
  font-family: var(--45b-font-sans);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.headline-sm {
  font-family: var(--45b-font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--45b-accent-primary);
  margin-bottom: var(--space-md);
}

.body-lg {
  font-family: var(--45b-font-sans);
  font-size: var(--text-lg);
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 80ch;
}

.body-md {
  font-family: var(--45b-font-sans);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════
   HERO SECTION
   ═══════════════════════════════════════════════════ */

.hero__content {
  max-width: 800px;
}

.hero__accent {
  width: 80px;
  height: 4px;
  background-color: var(--45b-accent-primary);
  margin-bottom: var(--space-xl);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
}

/* ═══════════════════════════════════════════════════
   BUTTONS - Flat colour blocks only
   ═══════════════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 28px;
  font-family: var(--45b-font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn--primary {
  background-color: var(--text-primary);
  color: var(--surface-900);
}

.btn--primary:hover {
  background-color: var(--45b-accent-primary);
  color: var(--text-primary);
}

.btn--secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--surface-500);
}

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

/* Yellow accent button - Blue Monday pairing */
.btn--accent {
  background-color: var(--45b-accent-secondary);
  color: var(--surface-900);
}

.btn--accent:hover {
  background-color: var(--45b-accent-primary);
  color: var(--text-primary);
}

/* ═══════════════════════════════════════════════════
   SERVICES GRID - Flat colour accents
   ═══════════════════════════════════════════════════ */

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  background-color: var(--surface-700);
  padding: var(--space-xl);
  position: relative;
  transition: transform 0.2s ease;
}

.service-card:hover {
  transform: translateY(-4px);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

/* Service card colour accents - flat blocks only, no gradients */
.service-card--blue::before { background-color: var(--45b-blue); }
.service-card--teal::before { background-color: var(--45b-teal); }
.service-card--coral::before { background-color: var(--45b-coral); }
.service-card--green::before { background-color: var(--45b-green); }
.service-card--purple::before { background-color: var(--45b-purple); }
.service-card--orange::before { background-color: var(--45b-orange); }

.service-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

/* Icon backgrounds - using rgba for subtle tint while maintaining flat feel */
.service-card--blue .service-card__icon { 
  background-color: rgba(21, 101, 192, 0.2);
  color: var(--45b-blue);
}
.service-card--teal .service-card__icon { 
  background-color: rgba(0, 151, 167, 0.2);
  color: var(--45b-teal);
}
.service-card--coral .service-card__icon { 
  background-color: rgba(242, 103, 54, 0.2);
  color: var(--45b-coral);
}
.service-card--green .service-card__icon { 
  background-color: rgba(46, 125, 50, 0.2);
  color: var(--45b-green);
}
.service-card--purple .service-card__icon { 
  background-color: rgba(123, 31, 162, 0.2);
  color: var(--45b-purple);
}
.service-card--orange .service-card__icon { 
  background-color: rgba(245, 124, 0, 0.2);
  color: var(--45b-orange);
}

.service-card__title {
  font-family: var(--45b-font-sans);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.service-card__desc {
  font-family: var(--45b-font-sans);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--45b-accent-primary);
}

.service-card__link:hover {
  color: var(--text-link-hover);
}

/* ═══════════════════════════════════════════════════
   PHILOSOPHY / VALUES
   ═══════════════════════════════════════════════════ */

.philosophy {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

@media (min-width: 768px) {
  .philosophy {
    grid-template-columns: 1fr 1fr;
  }
}

.philosophy__statement {
  font-family: var(--45b-font-sans);
  font-size: clamp(24px, 3.5vw, 32px);
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
}

/* Blue Monday Yellow accent for emphasis */
.philosophy__statement em {
  font-style: normal;
  color: var(--45b-accent-secondary);
}

.values-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

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

.value-item__marker {
  width: 4px;
  height: 24px;
  background-color: var(--45b-accent-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.value-item__content h4 {
  font-family: var(--45b-font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--45b-accent-primary);
  margin-bottom: var(--space-xs);
}

.value-item__content p {
  font-family: var(--45b-font-sans);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════
   ABOUT PAGE
   ═══════════════════════════════════════════════════ */

.about-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
}

@media (min-width: 768px) {
  .about-intro {
    grid-template-columns: 2fr 1fr;
  }
}

.about-intro__text p {
  margin-bottom: var(--space-lg);
}

.about-intro__text p:last-child {
  margin-bottom: 0;
}

.about-sidebar {
  background-color: var(--surface-700);
  padding: var(--space-xl);
}

.about-sidebar__title {
  font-family: var(--45b-font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--45b-accent-primary);
  margin-bottom: var(--space-lg);
}

.about-sidebar__item {
  margin-bottom: var(--space-md);
}

.about-sidebar__label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

.about-sidebar__value {
  font-size: var(--text-sm);
  color: var(--text-primary);
}

/* ═══════════════════════════════════════════════════
   SERVICES PAGE - DETAILED
   ═══════════════════════════════════════════════════ */

.service-detail {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--surface-600);
}

.service-detail:last-child {
  border-bottom: none;
}

.service-detail__header {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.service-detail__color {
  width: 8px;
  height: 48px;
}

/* Flat colour blocks only */
.service-detail--blue .service-detail__color { background-color: var(--45b-blue); }
.service-detail--teal .service-detail__color { background-color: var(--45b-teal); }
.service-detail--coral .service-detail__color { background-color: var(--45b-coral); }
.service-detail--green .service-detail__color { background-color: var(--45b-green); }
.service-detail--purple .service-detail__color { background-color: var(--45b-purple); }
.service-detail--orange .service-detail__color { background-color: var(--45b-orange); }

.service-detail__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 768px) {
  .service-detail__content {
    grid-template-columns: 1fr 1fr;
  }
}

.service-detail__desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.7;
}

.service-detail__list {
  list-style: none;
}

.service-detail__list li {
  padding: var(--space-sm) 0;
  padding-left: var(--space-lg);
  position: relative;
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.service-detail__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 2px;
  background-color: var(--45b-accent-primary);
}

/* ═══════════════════════════════════════════════════
   CONTACT PAGE
   ═══════════════════════════════════════════════════ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-info__item {
  margin-bottom: var(--space-2xl);
}

.contact-info__label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--45b-accent-primary);
  margin-bottom: var(--space-sm);
}

.contact-info__value {
  font-size: var(--text-lg);
  color: var(--text-primary);
}

.contact-info__value a {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.contact-info__value a:hover {
  color: var(--45b-accent-primary);
}

.contact-legal {
  background-color: var(--surface-700);
  padding: var(--space-xl);
}

.contact-legal__title {
  font-family: var(--45b-font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.contact-legal p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

/* ═══════════════════════════════════════════════════
   CONTACT FORM
   ═══════════════════════════════════════════════════ */

.contact-form {
  background-color: var(--surface-700);
  padding: var(--space-2xl);
}

.contact-form__title {
  font-family: var(--45b-font-sans);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

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

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.form-group label .required {
  color: var(--45b-coral);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--45b-font-sans);
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--surface-800);
  border: 1px solid var(--surface-500);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--45b-accent-primary);
  box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-subtle);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23888888' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 44px;
}

.form-group select option {
  background-color: var(--surface-800);
  color: var(--text-primary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-submit {
  margin-top: var(--space-xl);
}

.form-submit .btn {
  width: 100%;
}

@media (min-width: 768px) {
  .form-submit .btn {
    width: auto;
  }
}

.form-note {
  margin-top: var(--space-lg);
  font-size: 13px;
  color: var(--text-muted);
}

/* Form messages - flat colour blocks */
.form-message {
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  font-size: var(--text-sm);
}

.form-message--success {
  background-color: rgba(46, 125, 50, 0.2);
  border-left: 4px solid var(--45b-green);
  color: #4CAF50;
}

.form-message--error {
  background-color: rgba(242, 103, 54, 0.2);
  border-left: 4px solid var(--45b-coral);
  color: var(--45b-coral);
}

.form-message.hidden {
  display: none;
}

/* Honeypot field */
.form-honey {
  position: absolute;
  left: -9999px;
}

/* ═══════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════ */

.footer {
  background-color: var(--surface-800);
  border-top: 1px solid var(--surface-600);
  padding: var(--space-3xl) var(--space-lg);
}

.footer__container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 768px) {
  .footer__container {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer__brand {
  max-width: 320px;
}

.footer__wordmark {
  font-family: var(--45b-font-sans);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.footer__nav-title {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.footer__nav-list {
  list-style: none;
}

.footer__nav-list li {
  margin-bottom: var(--space-sm);
}

.footer__nav-list a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.footer__nav-list a:hover {
  color: var(--text-primary);
}

.footer__nav-list a:visited {
  color: var(--text-secondary);
}

.footer__bottom {
  max-width: var(--max-width);
  margin: var(--space-2xl) auto 0;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--surface-600);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-md);
}

.footer__legal {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--text-subtle);
}

/* ═══════════════════════════════════════════════════
   CTA SECTION
   ═══════════════════════════════════════════════════ */

.cta-section {
  text-align: center;
  padding: var(--space-5xl) var(--space-lg);
}

.cta-section .headline-lg {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .body-lg {
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-xl);
}

/* ═══════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════ */

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

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; opacity: 0; }
.animate-delay-2 { animation-delay: 0.2s; opacity: 0; }
.animate-delay-3 { animation-delay: 0.3s; opacity: 0; }
.animate-delay-4 { animation-delay: 0.4s; opacity: 0; }

/* ═══════════════════════════════════════════════════
   UTILITY CLASSES
   ═══════════════════════════════════════════════════ */

.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

/* Text colours */
.text-black { color: var(--45b-black); }
.text-charcoal { color: var(--45b-charcoal); }
.text-blue { color: var(--45b-blue); }
.text-purple { color: var(--45b-purple); }
.text-muted { color: var(--text-muted); }

/* Background colours - FLAT BLOCKS ONLY, NO GRADIENTS */
.bg-black { background-color: var(--45b-black); }
.bg-charcoal { background-color: var(--45b-charcoal); }
.bg-light { background-color: var(--45b-light-gray); }
.bg-blue { background-color: var(--45b-blue); }
.bg-yellow { background-color: var(--45b-yellow); }
.bg-green { background-color: var(--45b-green); }
.bg-teal { background-color: var(--45b-teal); }
.bg-purple { background-color: var(--45b-purple); }
.bg-coral { background-color: var(--45b-coral); }
.bg-orange { background-color: var(--45b-orange); }

/* ═══════════════════════════════════════════════════
   ACCESSIBILITY - WCAG 2.1 AA Compliance
   Minimum contrast: 4.5:1 normal text, 3:1 large text
   Minimum body text: 16px | Line height: 1.5+
   ═══════════════════════════════════════════════════ */

/* Focus states for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--45b-accent-primary);
  outline-offset: 2px;
}

/* Skip link for screen readers */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--45b-accent-primary);
  color: var(--45b-white);
  padding: 8px 16px;
  z-index: 10000;
}

.skip-link:focus {
  top: 0;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ═══════════════════════════════════════════════════
   GRADIENT PROHIBITION
   CRITICAL: Gradients are NEVER permitted per v3 guidelines.
   All colour applications must be flat, solid blocks.
   ═══════════════════════════════════════════════════ */

/*
PROHIBITED - Never use these:
background: linear-gradient(...);
background: radial-gradient(...);
background: conic-gradient(...);
opacity transitions between colours;

PERMITTED - Always use flat blocks:
background-color: var(--45b-blue);
background: var(--45b-blue);
*/