/* ============================================================
   IPChain Design System — "The Kinetic Architect"
   Hand-drawn sketch aesthetic with editorial typography
   ============================================================ */

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

/* ---- Design Tokens (CSS Custom Properties) ---- */
:root {
  /* Primary */
  --primary: #00658D;
  --primary-container: #00AEEF;
  --on-primary: #ffffff;
  --on-primary-container: #003E58;
  --primary-fixed: #C6E7FF;
  --primary-fixed-dim: #82CFFF;
  --inverse-primary: #82CFFF;

  /* Secondary */
  --secondary: #3A637C;
  --secondary-container: #B9E2FF;
  --on-secondary: #ffffff;
  --on-secondary-container: #3D657E;
  --on-secondary-fixed: #001E2D;

  /* Tertiary */
  --tertiary: #8D4F00;
  --tertiary-container: #EA8C21;
  --on-tertiary: #ffffff;
  --on-tertiary-container: #572F00;
  --tertiary-fixed: #FFDCC0;

  /* Error */
  --error: #BA1A1A;
  --error-container: #FFDAD6;
  --on-error: #ffffff;
  --on-error-container: #93000A;

  /* Surface Hierarchy (Paper Tones) */
  --surface: #FCF9F8;
  --surface-dim: #DCD9D9;
  --surface-bright: #FCF9F8;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #F6F3F2;
  --surface-container: #F0EDED;
  --surface-container-high: #EAE7E7;
  --surface-container-highest: #E5E2E1;
  --surface-variant: #E5E2E1;
  --surface-tint: #00658D;

  /* On Surface */
  --on-surface: #1C1B1B;
  --on-surface-variant: #3E4850;
  --on-background: #1C1B1B;
  --background: #FCF9F8;
  --inverse-surface: #313030;
  --inverse-on-surface: #F3F0EF;

  /* Outline */
  --outline: #6E7881;
  --outline-variant: #BDC8D1;

  /* Typography */
  --font-headline: 'Epilogue', sans-serif;
  --font-body: 'Be Vietnam Pro', sans-serif;

  /* Spacing Scale */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* Shadows — Primary Tinted, Never Grey */
  --shadow-sm: 0 4px 12px rgba(0, 101, 141, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 101, 141, 0.06);
  --shadow-lg: 0 16px 40px rgba(0, 101, 141, 0.08);
  --shadow-xl: 0 20px 40px rgba(0, 101, 141, 0.06);
  --shadow-2xl: 0 24px 60px rgba(0, 101, 141, 0.12);

  /* Radii */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-full: 9999px;
  /* Asymmetric — hand-cut paper effect */
  --radius-asymmetric: 20px 4px 24px 8px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 200ms var(--ease-out);
  --transition-normal: 400ms var(--ease-out);
  --transition-slow: 600ms var(--ease-out);
}

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

body {
  font-family: var(--font-body);
  color: var(--on-surface);
  background-color: var(--surface);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

button {
  font-family: var(--font-headline);
  cursor: pointer;
  border: none;
  outline: none;
  transition: all var(--transition-normal);
}

ul {
  list-style: none;
}

/* ---- Container ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-8);
}

/* ---- Typography ---- */
.display-lg {
  font-family: var(--font-headline);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.headline-lg {
  font-family: var(--font-headline);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 900;
  line-height: 1.2;
}

.headline-md {
  font-family: var(--font-headline);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  line-height: 1.3;
}

.headline-sm {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.35;
}

.body-lg {
  font-family: var(--font-body);
  font-size: 1.125rem;
  font-weight: 300;
  line-height: 1.7;
}

.body-md {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1.7;
}

.body-sm {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 400;
  line-height: 1.6;
}

.label-lg {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.label-sm {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ---- Sketch Underline ---- */
.sketch-underline {
  background-image: url("data:image/svg+xml,%3Csvg width='200' height='20' viewBox='0 0 200 20' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5 15C40 12 160 8 195 12' stroke='%2300AEEF' stroke-width='4' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: bottom center;
  background-size: 100% 12px;
  padding-bottom: 8px;
}

/* ---- Scribble Border (bottom) ---- */
.scribble-border {
  position: relative;
  display: inline-block;
}
.scribble-border::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary);
  border-radius: 50% 20% 40% 10%;
  opacity: 0.2;
}

/* ---- Asymmetric Card ---- */
.asymmetric-card {
  border-radius: var(--radius-asymmetric);
}

/* ---- Ghost Border (accessibility) ---- */
.ghost-border {
  outline: 1px solid rgba(189, 200, 209, 0.15);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(252, 249, 248, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-xl);
  transition: background var(--transition-normal);
}

.nav__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-4) var(--sp-8);
  max-width: 1200px;
  margin: 0 auto;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.nav__logo {
  height: 48px;
  width: auto;
}

.nav__title {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 900;
  font-style: italic;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  gap: var(--sp-8);
  align-items: center;
}

.nav__link {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--outline);
  transition: color var(--transition-fast);
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-container);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}
.nav__link:hover {
  color: var(--primary);
}
.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

/* Language Toggle */
.btn-lang {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--outline);
  background: none;
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.btn-lang:hover {
  color: var(--primary);
  background: var(--surface-container-high);
}

/* CTA Button */
.btn-primary {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--on-primary);
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  padding: var(--sp-2) var(--sp-6);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary-container), var(--primary));
  opacity: 0;
  transition: opacity var(--transition-normal);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}
.btn-primary:hover::before {
  opacity: 1;
}
.btn-primary:active {
  transform: scale(0.97);
}
.btn-primary span {
  position: relative;
  z-index: 1;
}

/* Large CTA */
.btn-primary-lg {
  font-size: 1.125rem;
  padding: var(--sp-4) var(--sp-8);
  border-radius: var(--radius-xl);
  box-shadow: 0 12px 32px rgba(0, 101, 141, 0.2);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}
.btn-primary-lg:hover {
  transform: scale(1.05);
}

/* Ghost Button */
.btn-ghost {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--on-surface);
  background: var(--surface-container-high);
  padding: var(--sp-4) var(--sp-8);
  border-radius: var(--radius-xl);
  border-bottom: 2px solid var(--outline-variant);
  transition: all var(--transition-normal);
}
.btn-ghost:hover {
  background: var(--surface-container-highest);
  transform: translateY(-1px);
}

/* Mobile Menu Toggle */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: var(--sp-2);
  cursor: pointer;
}
.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--on-surface);
  border-radius: 2px;
  transition: all var(--transition-fast);
}
.nav__hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav__hamburger.active span:nth-child(2) {
  opacity: 0;
}
.nav__hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  padding-top: calc(96px + var(--sp-16));
  padding-bottom: var(--sp-16);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: center;
}

.hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 6px var(--sp-4);
  border-radius: var(--radius-full);
  background: var(--secondary-container);
  color: var(--on-secondary-container);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  align-self: flex-start;
}

.hero__title {
  color: var(--on-surface);
}
.hero__title .accent {
  color: var(--primary-container);
}

.hero__desc {
  color: var(--on-surface-variant);
  max-width: 520px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  padding-top: var(--sp-4);
}

/* Hero Visual */
.hero__visual {
  position: relative;
}

.hero__glow-1 {
  position: absolute;
  top: -40px;
  left: -40px;
  width: 128px;
  height: 128px;
  background: rgba(0, 174, 239, 0.08);
  border-radius: 50%;
  filter: blur(48px);
  animation: glow-pulse 4s ease-in-out infinite;
}
.hero__glow-2 {
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 192px;
  height: 192px;
  background: rgba(0, 101, 141, 0.08);
  border-radius: 50%;
  filter: blur(48px);
  animation: glow-pulse 6s ease-in-out infinite 1s;
}

.hero__image-card {
  position: relative;
  z-index: 2;
  background: var(--surface-container-lowest);
  padding: var(--sp-4);
  border-radius: var(--radius-asymmetric);
  box-shadow: var(--shadow-2xl);
  overflow: hidden;
  outline: 1px solid rgba(189, 200, 209, 0.1);
  transform: rotate(2deg);
  transition: transform var(--transition-slow);
}
.hero__visual:hover .hero__image-card {
  transform: rotate(0deg);
}

.hero__image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

/* Floating Stats Badge */
.hero__stats {
  position: absolute;
  bottom: -24px;
  left: -24px;
  background: var(--surface-container-lowest);
  padding: var(--sp-4);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  outline: 1px solid rgba(0, 0, 0, 0.04);
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  transform: rotate(-3deg);
  z-index: 3;
  transition: transform var(--transition-slow);
}
.hero__visual:hover .hero__stats {
  transform: rotate(0deg);
}

.hero__stats-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-container);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-primary);
}

.hero__stats-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--outline);
}

.hero__stats-value {
  font-family: var(--font-headline);
  font-weight: 700;
  color: var(--primary);
}

/* Sketch Decoration */
.hero__sketch-icon {
  position: absolute;
  top: -16px;
  right: -16px;
  color: var(--primary-container);
  transform: rotate(12deg);
  font-size: 3.5rem;
  opacity: 0.6;
  z-index: 4;
}

/* ============================================================
   SERVICES SECTION
   ============================================================ */
.services {
  background: var(--surface-container-low);
  padding: var(--sp-24) 0;
  border-radius: 60px 60px 0 0;
  position: relative;
}

.services__header {
  text-align: center;
  margin-bottom: var(--sp-16);
}
.services__header h2 {
  color: var(--on-surface);
  margin-bottom: var(--sp-4);
}
.services__header p {
  color: var(--on-surface-variant);
  max-width: 600px;
  margin: 0 auto;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-8);
}

/* Service Card */
.service-card {
  background: var(--surface-container-lowest);
  padding: var(--sp-8);
  border-radius: var(--radius-asymmetric);
  box-shadow: var(--shadow-sm);
  outline: 1px solid rgba(189, 200, 209, 0.2);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-container));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}
.service-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-8px);
}
.service-card:hover::before {
  transform: scaleX(1);
}

.service-card__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-2xl);
  background: var(--secondary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-6);
  transition: background var(--transition-normal);
}
.service-card:hover .service-card__icon {
  background: var(--primary-container);
}
.service-card__icon .material-symbols-outlined {
  font-size: 2rem;
  color: var(--on-primary-container);
}
.service-card:hover .service-card__icon .material-symbols-outlined {
  color: var(--on-primary);
}

.service-card__title {
  font-family: var(--font-headline);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--sp-3);
}

.service-card__desc {
  font-size: 0.875rem;
  color: var(--on-surface-variant);
  line-height: 1.7;
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  margin-top: var(--sp-4);
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--primary);
  opacity: 0;
  transform: translateY(8px);
  transition: all var(--transition-normal);
}
.service-card:hover .service-card__link {
  opacity: 1;
  transform: translateY(0);
}
.service-card__link .material-symbols-outlined {
  font-size: 1rem;
  transition: transform var(--transition-fast);
}
.service-card__link:hover .material-symbols-outlined {
  transform: translateX(4px);
}

/* ============================================================
   WHY CHOOSE US
   ============================================================ */
.why {
  padding: var(--sp-24) 0;
}

.why__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-16);
  align-items: center;
}

.why__images {
  position: relative;
}
.why__images-bg {
  position: absolute;
  inset: 0;
  background: rgba(0, 174, 239, 0.04);
  border-radius: 50%;
  filter: blur(48px);
}

.why__images-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
  position: relative;
  z-index: 1;
}

.why__image-card {
  background: var(--surface);
  padding: var(--sp-4);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  outline: 1px solid rgba(0, 0, 0, 0.04);
}
.why__image-card:first-child {
  margin-top: var(--sp-12);
  transform: rotate(2deg);
}
.why__image-card:last-child {
  transform: rotate(-3deg);
}
.why__image-card img {
  border-radius: var(--radius-xl);
  width: 100%;
  object-fit: cover;
}
.why__image-card:first-child img {
  height: 200px;
}
.why__image-card:last-child img {
  height: 280px;
}
.why__image-label {
  font-weight: 700;
  font-size: 0.875rem;
  margin-top: var(--sp-3);
  color: var(--primary);
}

.why__content {
  display: flex;
  flex-direction: column;
  gap: var(--sp-10);
}

.why__header {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.why__header h2 {
  color: var(--on-surface);
}
.why__header h2 .accent {
  color: var(--primary);
  font-style: italic;
}
.why__bar {
  width: 96px;
  height: 8px;
  background: var(--primary-container);
  border-radius: var(--radius-full);
}

.why__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
}

.why__item {
  display: flex;
  gap: var(--sp-6);
}
.why__item-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--surface-container-high);
  display: flex;
  align-items: center;
  justify-content: center;
}
.why__item-icon .material-symbols-outlined {
  color: var(--primary);
}
.why__item-title {
  font-family: var(--font-headline);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--sp-1);
}
.why__item-desc {
  color: var(--on-surface-variant);
  line-height: 1.7;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about {
  padding: var(--sp-24) 0;
  background: var(--surface-container-low);
  border-radius: 60px 60px 0 0;
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-16);
  align-items: center;
}

.about__content {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}

.about__content h2 {
  color: var(--on-surface);
}

.about__content p {
  color: var(--on-surface-variant);
  line-height: 1.8;
}

.about__stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
  margin-top: var(--sp-4);
}

.about__stat {
  text-align: center;
  padding: var(--sp-4);
  background: var(--surface-container-lowest);
  border-radius: var(--radius-asymmetric);
  box-shadow: var(--shadow-sm);
}

.about__stat-number {
  font-family: var(--font-headline);
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary-container);
  line-height: 1;
}

.about__stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--on-surface-variant);
  margin-top: var(--sp-1);
}

.about__visual {
  position: relative;
}

.about__image-wrapper {
  border-radius: var(--radius-asymmetric);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  transform: rotate(-1deg);
  transition: transform var(--transition-slow);
}
.about__image-wrapper:hover {
  transform: rotate(0deg);
}
.about__image-wrapper img {
  width: 100%;
  height: auto;
}

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta {
  padding: 0 var(--sp-8) var(--sp-24);
  max-width: 960px;
  margin: 0 auto;
}

.cta__card {
  background: linear-gradient(135deg, var(--primary) 0%, #004a6b 50%, var(--primary) 100%);
  background-size: 200% 200%;
  animation: gradient-shift 8s ease infinite;
  padding: var(--sp-12) var(--sp-16);
  border-radius: var(--radius-asymmetric);
  text-align: center;
  color: var(--on-primary);
  position: relative;
  overflow: hidden;
}

.cta__decoration {
  position: absolute;
  top: 0;
  right: 0;
  padding: var(--sp-8);
  opacity: 0.15;
}
.cta__decoration .material-symbols-outlined {
  font-size: 120px;
}

.cta__card h2 {
  position: relative;
  z-index: 1;
  margin-bottom: var(--sp-4);
}

.cta__desc {
  color: rgba(178, 218, 255, 0.9);
  font-size: 1.125rem;
  font-weight: 300;
  max-width: 640px;
  margin: 0 auto var(--sp-8);
  position: relative;
  z-index: 1;
}

.btn-cta {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--on-primary-container);
  background: var(--primary-container);
  padding: var(--sp-4) var(--sp-10);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  position: relative;
  z-index: 1;
  transition: all var(--transition-normal);
}
.btn-cta:hover {
  background: var(--on-primary);
  color: var(--primary);
  transform: rotate(-1deg) scale(1.02);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--surface-container-highest);
  border-radius: 40px 40px 0 0;
  padding: var(--sp-12);
}

.footer__grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--sp-12);
  margin-bottom: var(--sp-12);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}

.footer__brand-row {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.footer__brand-logo {
  height: 32px;
  width: auto;
}

.footer__brand-name {
  font-family: var(--font-headline);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--primary);
}

.footer__brand-desc {
  color: var(--outline);
  font-weight: 500;
  font-size: 0.875rem;
  line-height: 1.7;
  max-width: 380px;
}

.footer__social {
  display: flex;
  gap: var(--sp-4);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface-container-lowest);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}
.footer__social-link:hover {
  background: var(--primary-container);
  color: var(--on-primary);
}

.footer__column h4 {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: var(--sp-6);
}

.footer__column ul {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.footer__column a {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--outline);
  transition: all var(--transition-fast);
  position: relative;
}
.footer__column a:hover {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: var(--primary-container);
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(189, 200, 209, 0.25);
  padding-top: var(--sp-10);
  max-width: 1200px;
  margin: 0 auto;
}

.footer__copyright {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--outline);
}

.footer__bottom-links {
  display: flex;
  gap: var(--sp-8);
  align-items: center;
}

.footer__bottom-links a {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--outline);
  transition: opacity var(--transition-fast);
}
.footer__bottom-links a:hover {
  opacity: 0.7;
}
.footer__bottom-links a.active {
  color: var(--primary);
  font-weight: 700;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes glow-pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.15); }
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(12deg); }
  50% { transform: translateY(-12px) rotate(8deg); }
}

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(32px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes sketch-draw {
  from { stroke-dashoffset: 400; }
  to { stroke-dashoffset: 0; }
}

/* Scroll-triggered animation classes */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Floating animation for decoration */
.float-anim {
  animation: float 6s ease-in-out infinite;
}

/* Material Symbols config */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}
.material-symbols-outlined.filled {
  font-variation-settings: 'FILL' 1;
}

/* ============================================================
   MOBILE NAV OVERLAY
   ============================================================ */
.nav__mobile-overlay {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(252, 249, 248, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  padding: var(--sp-8);
  flex-direction: column;
  gap: var(--sp-6);
}
.nav__mobile-overlay.active {
  display: flex;
}
.nav__mobile-overlay a {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.25rem;
  padding: var(--sp-3) 0;
  color: var(--on-surface);
  border-bottom: 1px solid rgba(189, 200, 209, 0.2);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .services {
    border-radius: 40px 40px 0 0;
  }
  .about {
    border-radius: 40px 40px 0 0;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --sp-8: 1.25rem;
    --sp-12: 2rem;
    --sp-16: 3rem;
    --sp-20: 3.5rem;
    --sp-24: 4rem;
  }

  .nav__links {
    display: none;
  }
  .nav__hamburger {
    display: flex;
  }
  .btn-primary.nav-cta {
    display: none;
  }

  .hero__grid {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
  }
  .hero__visual {
    order: -1;
    max-width: 400px;
    margin: 0 auto;
  }
  .hero {
    padding-top: calc(80px + var(--sp-8));
  }

  .services__grid {
    grid-template-columns: 1fr;
  }
  .services {
    border-radius: 32px 32px 0 0;
  }

  .why__grid {
    grid-template-columns: 1fr;
  }
  .why__images {
    order: -1;
    max-width: 400px;
    margin: 0 auto;
  }

  .about__grid {
    grid-template-columns: 1fr;
  }
  .about {
    border-radius: 32px 32px 0 0;
  }
  .about__stats-row {
    grid-template-columns: repeat(3, 1fr);
  }

  .cta__card {
    padding: var(--sp-8) var(--sp-6);
  }

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

  .footer__bottom {
    flex-direction: column;
    gap: var(--sp-4);
    text-align: center;
  }
}

/* Very small mobile */
@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
  }
  .hero__actions button {
    width: 100%;
    justify-content: center;
  }
  .about__stats-row {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-primary { color: var(--primary); }
.text-accent { color: var(--primary-container); }
.text-muted { color: var(--on-surface-variant); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Loading States */
.skeleton {
  background: linear-gradient(90deg, var(--surface-container) 25%, var(--surface-container-high) 50%, var(--surface-container) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}
@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}