/* ================================================
   ALIDA — Landing Page Styles
   ================================================ */

/* ---- Custom Properties ---- */
:root {
  --bg:            #0a0a0f;
  --bg-alt:        #111118;
  --bg-card:       #161620;
  --text:          #f0f0f5;
  --text-secondary:#8a8a9a;
  --accent:        #00d4ff;
  --accent-hover:  #00b8e0;
  --danger:        #ff3366;
  --success:       #00ff88;

  --font-body:     'Inter', system-ui, -apple-system, sans-serif;
  --font-heading:  'Space Grotesk', 'Inter', sans-serif;

  --max-width:     1200px;
  --nav-height:    72px;

  --space-xs:      0.5rem;
  --space-sm:      1rem;
  --space-md:      2rem;
  --space-lg:      4rem;
  --space-xl:      6rem;
  --space-2xl:     8rem;

  --radius-sm:     6px;
  --radius-md:     12px;
  --radius-lg:     20px;

  --transition:    0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

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

ul {
  list-style: none;
}

/* ---- Utility ---- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 4vw, 3rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.5rem); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--bg);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.3);
}

.btn--outline {
  background: transparent;
  color: var(--text);
  border-color: rgba(240, 240, 245, 0.25);
}

.btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.15);
}

.btn--lg {
  padding: 1rem 2.25rem;
  font-size: 1rem;
}

/* ============================================
   NAVIGATION
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(10, 10, 15, 0.92);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.1em;
}

.nav__logo:hover {
  color: var(--accent);
}

.nav__links {
  display: flex;
  gap: 2rem;
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--text);
}

.nav__link.active::after,
.nav__link:hover::after {
  width: 100%;
}

.nav__cta {
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all var(--transition);
  transform-origin: center;
}

.nav__hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, var(--bg) 0%, transparent 30%, transparent 70%, var(--bg) 100%),
    linear-gradient(135deg, rgba(0, 212, 255, 0.06) 0%, transparent 50%, rgba(0, 255, 136, 0.03) 100%);
  z-index: 0;
}

.hero__grid-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 100%);
}

.hero__visual {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  pointer-events: none;
  opacity: 0.35;
}

.hero__turbine-svg {
  width: 80%;
  max-width: 900px;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.hero__headline {
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--text) 0%, rgba(240, 240, 245, 0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  font-size: clamp(1.0625rem, 2vw, 1.3125rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto var(--space-sm);
  line-height: 1.8;
}

.hero__support {
  font-size: 0.875rem;
  color: var(--text-secondary);
  opacity: 0.7;
  margin-bottom: var(--space-lg);
  letter-spacing: 0.02em;
}

.hero__tagline {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-md);
  padding: 0.375rem 1.125rem;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 999px;
  background: rgba(0, 212, 255, 0.06);
}

.hero__ctas {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   SECTIONS — SHARED
   ============================================ */
.section {
  padding: var(--space-xl) 0;
  position: relative;
}

.section--alt {
  background: var(--bg-alt);
}

.section--cta {
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
}

.section__header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--space-lg);
}

.section__title {
  margin-bottom: var(--space-md);
  position: relative;
  display: inline-block;
}

.section__title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin-top: var(--space-sm);
  border-radius: 2px;
}

.section__header .section__title::after {
  margin-left: auto;
  margin-right: auto;
}

.section__copy {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.85;
  margin-bottom: var(--space-sm);
}

.section__bold-question {
  font-family: var(--font-heading);
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: 600;
  color: var(--text);
  margin-top: var(--space-md);
  margin-bottom: var(--space-sm);
}

.section__closing {
  text-align: center;
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-top: var(--space-lg);
  font-weight: 500;
}

.section__closing--accent {
  color: var(--accent);
  font-family: var(--font-heading);
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: 600;
}

.section__support {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-top: var(--space-sm);
  font-style: italic;
  opacity: 0.8;
}

/* ============================================
   PROBLEM — PAIN CARDS
   ============================================ */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
}

.pain-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 51, 102, 0.12);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: all var(--transition);
}

.pain-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 51, 102, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(255, 51, 102, 0.06);
}

.pain-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-sm);
  flex-shrink: 0;
}

.pain-card__icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.pain-card__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.pain-card__text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   GAP VISUAL
   ============================================ */
.gap-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding: var(--space-lg) 0;
}

.gap-visual__side {
  flex: 1;
  min-width: 200px;
  max-width: 280px;
  text-align: center;
  padding: var(--space-md);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition);
}

.gap-visual__side:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.gap-visual__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-sm);
}

.gap-visual__icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.gap-visual__label {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.gap-visual__desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.gap-visual__bridge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: var(--space-sm);
}

.gap-visual__bridge-line {
  width: 2px;
  height: 40px;
  background: linear-gradient(180deg, transparent, var(--danger), transparent);
}

.gap-visual__bridge-label {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--danger);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: 0.375rem 1rem;
  border: 1px solid rgba(255, 51, 102, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(255, 51, 102, 0.08);
}

/* ============================================
   SOLUTION — PROCESS CARDS
   ============================================ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.process-card {
  background: var(--bg-card);
  border: 1px solid rgba(0, 212, 255, 0.1);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-md) var(--space-lg);
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}

.process-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.process-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.25);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 24px rgba(0, 212, 255, 0.08);
}

.process-card__number {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
  opacity: 0.6;
}

.process-card__icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-sm);
}

.process-card__icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.process-card__title {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.process-card__text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Architecture Flow */
.arch-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  padding: var(--space-md);
  background: rgba(0, 212, 255, 0.03);
  border: 1px solid rgba(0, 212, 255, 0.08);
  border-radius: var(--radius-md);
}

.arch-flow__node {
  padding: 0.75rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: center;
}

.arch-flow__node--highlight {
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
  background: rgba(0, 212, 255, 0.06);
}

.arch-flow__arrow {
  width: 40px;
  height: 20px;
  flex-shrink: 0;
}

/* ============================================
   USE CASE
   ============================================ */
.usecase-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.usecase-content .section__title::after {
  margin-left: 0;
}

.usecase-list {
  margin: var(--space-md) 0;
  padding-left: 0;
}

.usecase-list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.usecase-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
}

.usecase-visual {
  display: flex;
  justify-content: center;
}

.usecase-visual__img {
  width: 100%;
  max-width: 440px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 212, 255, 0.1);
}

/* ============================================
   IMPACT
   ============================================ */
.impact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.impact-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-md);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition);
}

.impact-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.impact-card--without {
  border-top: 3px solid var(--danger);
}

.impact-card--with {
  border-top: 3px solid var(--success);
}

.impact-card__title {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.impact-card--without .impact-card__title {
  color: var(--danger);
}

.impact-card--with .impact-card__title {
  color: var(--success);
}

.impact-card__list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.impact-card__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ============================================
   DEPLOYMENT
   ============================================ */
.deploy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md);
}

.deploy-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.deploy-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--transition);
}

.deploy-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.15);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

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

.deploy-card__number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.2;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.deploy-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.deploy-card__text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Deploy Checklist */
.deploy-checklist {
  max-width: 560px;
  margin: 0 auto var(--space-lg);
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid rgba(0, 255, 136, 0.12);
  border-radius: var(--radius-md);
}

.deploy-checklist__heading {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--space-md);
}

.deploy-checklist__list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.deploy-checklist__list li:last-child {
  margin-bottom: 0;
}

.deploy-checklist__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

/* ============================================
   WHEN ALIDA IS USED
   ============================================ */
.when-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md);
}

.when-card {
  background: var(--bg-card);
  border: 1px solid rgba(0, 212, 255, 0.1);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.when-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.when-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.25);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 212, 255, 0.06);
}

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

.when-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-sm);
}

.when-card__icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.when-card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.when-card__text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   POSITIONING
   ============================================ */
.positioning-content {
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-lg) 0;
}

.positioning-lead {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 600;
  color: var(--accent);
  margin-bottom: var(--space-md);
  line-height: 1.4;
}

/* ============================================
   TEAM
   ============================================ */
.team-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
}

.team-card__avatar {
  width: 120px;
  height: 120px;
  margin-bottom: var(--space-md);
}

.team-card__name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.team-card__role {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  line-height: 1.7;
}

.team-card__bio {
  font-size: 0.875rem;
  color: var(--text-secondary);
  opacity: 0.7;
  line-height: 1.7;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-content {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-lg) 0;
}

.cta-content .section__title::after {
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-lg);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--space-md) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer__brand {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.footer__logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
  letter-spacing: 0.1em;
}

.footer__acronym {
  font-size: 0.75rem;
  color: var(--text-secondary);
  opacity: 0.7;
  letter-spacing: 0.04em;
}

.footer__copy {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE — TABLET (768px)
   ============================================ */
@media (min-width: 768px) {
  .section {
    padding: var(--space-2xl) 0;
  }

  .usecase-layout {
    grid-template-columns: 1.2fr 1fr;
  }

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

  .gap-visual {
    flex-wrap: nowrap;
  }

  .gap-visual__bridge {
    flex-direction: row;
  }

  .gap-visual__bridge-line {
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--danger), transparent);
  }
}

/* ============================================
   RESPONSIVE — DESKTOP (1200px)
   ============================================ */
@media (min-width: 1200px) {
  .section {
    padding: 120px 0;
  }

  .hero__content {
    padding: var(--space-2xl) var(--space-md);
  }
}

/* ============================================
   RESPONSIVE — MOBILE (< 768px)
   ============================================ */
@media (max-width: 767px) {
  .nav__hamburger {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.98);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 999;
  }

  .nav__links.open {
    opacity: 1;
    visibility: visible;
  }

  .nav__links .nav__link {
    font-size: 1.25rem;
  }

  .nav__cta {
    display: none;
  }

  .hero__content {
    padding: var(--space-lg) var(--space-sm);
  }

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

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

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

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

  .arch-flow {
    flex-direction: column;
  }

  .arch-flow__arrow {
    transform: rotate(90deg);
  }

  .gap-visual__side {
    max-width: 100%;
  }
}