/* ============================================================
   Meme Swap — landing page styles
   Dark, Apple-inspired, parallax-friendly.
   ============================================================ */

:root {
  --bg: #060608;
  --bg-elevated: #0d0d12;
  --card: rgba(255, 255, 255, 0.04);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-border-hover: rgba(255, 255, 255, 0.18);
  --text: #f5f5f7;
  --text-dim: #a1a1a8;
  --text-faint: #6e6e76;
  --accent-1: #7c5cff;
  --accent-2: #4da6ff;
  --accent-3: #35d0a5;
  --gradient: linear-gradient(100deg, var(--accent-1), var(--accent-2) 55%, var(--accent-3));
  --radius: 22px;
  --nav-h: 56px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Helvetica, Arial,
    sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  line-height: 1.5;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

code {
  font-family: 'SF Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.07);
  padding: 0.15em 0.45em;
  border-radius: 6px;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  letter-spacing: -0.02em;
}

/* ============ Nav ============ */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  transition:
    background 0.4s var(--ease),
    border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(6, 6, 8, 0.72);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom-color: rgba(255, 255, 255, 0.06);
}
.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
}
.nav-brand:hover {
  text-decoration: none;
}
.nav-brand img {
  border-radius: 7px;
}
.nav-links {
  display: flex;
  gap: 26px;
}
.nav-links a {
  color: var(--text-dim);
  font-size: 13.5px;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--text);
  font-size: 13.5px;
  font-weight: 600;
  padding: 7px 14px;
  border: 1px solid var(--card-border);
  border-radius: 99px;
  background: var(--card);
  transition:
    border-color 0.2s,
    background 0.2s;
}
.nav-cta:hover {
  text-decoration: none;
  border-color: var(--card-border-hover);
  background: rgba(255, 255, 255, 0.08);
}

/* ============ Hero ============ */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  will-change: transform;
}
.orb-1 {
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(124, 92, 255, 0.55), transparent 65%);
  top: -12%;
  left: -8%;
}
.orb-2 {
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(77, 166, 255, 0.4), transparent 65%);
  bottom: -20%;
  right: -12%;
}
.orb-3 {
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(53, 208, 165, 0.32), transparent 65%);
  top: 32%;
  right: 16%;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 75%);
}

.hero-content {
  position: relative;
  max-width: 860px;
}

.hero-icon {
  border-radius: 26px;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.1),
    0 24px 60px rgba(124, 92, 255, 0.35),
    0 8px 24px rgba(0, 0, 0, 0.6);
  will-change: transform;
}

.hero-title {
  font-size: clamp(52px, 9vw, 104px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin: 34px 0 22px;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.gradient-text-green {
  background: linear-gradient(100deg, #35d0a5, #4da6ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: clamp(17px, 2.4vw, 22px);
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 36px;
}
.hero-sub strong {
  color: var(--text);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 28px;
  border-radius: 99px;
  font-size: 16px;
  font-weight: 600;
  transition:
    transform 0.25s var(--ease),
    box-shadow 0.25s var(--ease),
    background 0.25s;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 8px 30px rgba(124, 92, 255, 0.4);
}
.btn-primary:hover {
  box-shadow: 0 12px 40px rgba(124, 92, 255, 0.55);
}
.btn-ghost {
  color: var(--text);
  border: 1px solid var(--card-border);
  background: var(--card);
}
.btn-ghost:hover {
  border-color: var(--card-border-hover);
}

.hero-badges {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 40px;
}

.pill {
  font-size: 13px;
  color: var(--text-dim);
  border: 1px solid var(--card-border);
  background: var(--card);
  padding: 7px 14px;
  border-radius: 99px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 1.5px solid rgba(255, 255, 255, 0.25);
  border-radius: 99px;
}
.hero-scroll-hint span {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.5);
  animation: scroll-hint 2s var(--ease) infinite;
}
@keyframes scroll-hint {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  70% {
    transform: translateY(14px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 0;
  }
}

/* ============ Sections ============ */

.section {
  position: relative;
  max-width: 1080px;
  margin: 0 auto;
  padding: 130px 24px;
}

.section-head {
  max-width: 720px;
  margin-bottom: 64px;
}

.eyebrow {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 0 0 14px;
}

.section-head h2 {
  font-size: clamp(36px, 5.5vw, 60px);
  font-weight: 700;
  line-height: 1.05;
}

.lede {
  font-size: 18px;
  color: var(--text-dim);
  margin-top: 22px;
  max-width: 620px;
}

/* ============ Cards ============ */

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 30px;
  transition:
    transform 0.35s var(--ease),
    border-color 0.35s,
    background 0.35s;
}
.card:hover {
  border-color: var(--card-border-hover);
  background: rgba(255, 255, 255, 0.055);
  transform: translateY(-4px);
}
.card h3 {
  font-size: 21px;
  margin-bottom: 10px;
}
.card p {
  color: var(--text-dim);
  font-size: 15px;
  margin: 0;
}

/* ============ Steps ============ */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.step {
  position: relative;
  will-change: transform;
}
.step-num {
  position: absolute;
  top: 22px;
  right: 26px;
  font-size: 52px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.06);
  line-height: 1;
}
.step-emoji {
  font-size: 40px;
  margin-bottom: 18px;
}

.pipeline {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 56px;
}
.chip {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dim);
  background: var(--card);
  border: 1px solid var(--card-border);
  padding: 8px 16px;
  border-radius: 99px;
  white-space: nowrap;
}
.chip-hl {
  color: #fff;
  background: linear-gradient(100deg, rgba(124, 92, 255, 0.25), rgba(77, 166, 255, 0.25));
  border-color: rgba(124, 92, 255, 0.5);
}
.arrow {
  color: var(--text-faint);
}

/* ============ Showcase / screenshots ============ */

.app-window {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--card-border);
  background: #0b0b10;
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 255, 255, 0.02);
  will-change: transform;
}
.app-window img {
  display: block;
  width: 100%;
  height: auto;
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--card-border);
}
.window-title {
  margin-left: 10px;
  font-size: 12.5px;
  color: var(--text-faint);
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: center;
  margin-top: 90px;
}
.split-text h3 {
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 700;
  line-height: 1.12;
  margin: 0 0 18px;
}
.split-text p {
  color: var(--text-dim);
  font-size: 16px;
  margin: 0 0 22px;
}
.check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--text-dim);
  font-size: 15px;
}
.check-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-3);
  background: rgba(53, 208, 165, 0.12);
  border: 1px solid rgba(53, 208, 165, 0.3);
  border-radius: 50%;
}

/* ============ Local / privacy ============ */

.section-local {
  overflow: visible;
}

.local-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  border-radius: var(--radius);
}
.orb-local {
  position: absolute;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.25;
  background: radial-gradient(circle, rgba(53, 208, 165, 0.7), transparent 65%);
  top: -10%;
  right: -20%;
}

.local-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
}

.local-card {
  padding: 34px;
}
.local-card:hover {
  transform: none;
}
.folder-line {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 19px;
  margin-bottom: 22px;
}
.folder-line code {
  font-size: 17px;
  font-weight: 600;
  color: var(--accent-3);
  background: none;
  padding: 0;
}
.tree {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.tree li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}
.tree code {
  background: none;
  padding: 0;
  color: var(--text);
  font-size: 15px;
}
.tree span {
  color: var(--text-faint);
  font-size: 13.5px;
}

.local-points {
  display: grid;
  gap: 26px;
}
.point {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.point-icon {
  font-size: 26px;
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--card);
  border: 1px solid var(--card-border);
}
.point h4 {
  font-size: 17px;
  margin-bottom: 4px;
}
.point p {
  color: var(--text-dim);
  font-size: 14.5px;
  margin: 0;
}

/* ============ Tech bento ============ */

.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.bento-big {
  grid-column: span 2;
  background:
    radial-gradient(ellipse at 85% 10%, rgba(124, 92, 255, 0.14), transparent 55%), var(--card);
}
.bento-tag {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 14px;
}
.model-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.stack-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 48px;
  color: var(--text-faint);
  font-size: 14px;
}

/* ============ Surfaces ============ */

.surfaces {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.surface {
  will-change: transform;
  display: flex;
  flex-direction: column;
}
.surface-featured {
  background:
    radial-gradient(ellipse at 50% 0%, rgba(77, 166, 255, 0.12), transparent 60%), var(--card);
  border-color: rgba(77, 166, 255, 0.25);
}
.surface-icon {
  font-size: 36px;
  margin-bottom: 16px;
}
.surface p {
  flex: 1;
}
.cmd {
  display: block;
  margin-top: 20px;
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--card-border);
  color: var(--accent-3);
  font-size: 13px;
}

/* ============ Install / terminal ============ */

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

.download-card {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 32px;
  border-radius: var(--radius);
  border: 1px solid rgba(124, 92, 255, 0.35);
  background:
    radial-gradient(ellipse at 0% 0%, rgba(124, 92, 255, 0.14), transparent 55%), var(--card);
  flex-wrap: wrap;
}
.download-card img {
  border-radius: 15px;
  box-shadow: 0 8px 24px rgba(124, 92, 255, 0.3);
}
.download-info {
  flex: 1;
  min-width: 240px;
}
.download-info h3 {
  font-size: 19px;
  margin-bottom: 6px;
}
.download-info p {
  color: var(--text-dim);
  font-size: 14px;
  margin: 0;
}
.download-note {
  margin-top: 16px;
  margin-bottom: 0;
}
.download-note strong {
  color: var(--text-dim);
}

.or-divider {
  max-width: 760px;
  margin: 44px auto 28px;
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--text-faint);
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.or-divider::before,
.or-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--card-border);
}

.terminal {
  max-width: 760px;
  margin: 0 auto;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--card-border);
  background: #0b0b10;
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 255, 255, 0.02);
  will-change: transform;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--card-border);
}
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot.red {
  background: #ff5f57;
}
.dot.yellow {
  background: #febc2e;
}
.dot.green {
  background: #28c840;
}
.terminal-title {
  margin-left: 10px;
  font-size: 12.5px;
  color: var(--text-faint);
}
.terminal-body code {
  background: none;
  padding: 0;
  font-size: inherit;
}
.terminal-body {
  margin: 0;
  padding: 24px 26px;
  font-family: 'SF Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px;
  line-height: 1.9;
  overflow-x: auto;
  color: var(--text);
}
.t-comment {
  color: var(--text-faint);
}
.t-prompt {
  color: var(--accent-1);
  font-weight: 700;
}
.t-out {
  color: var(--accent-3);
}

.install-note {
  text-align: center;
  color: var(--text-faint);
  font-size: 14px;
  margin-top: 30px;
}

/* ============ Final CTA ============ */

.section-cta {
  padding-top: 40px;
}
.cta-box {
  text-align: center;
  padding: 90px 32px;
  border-radius: 32px;
  border: 1px solid var(--card-border);
  background:
    radial-gradient(ellipse at 50% -10%, rgba(124, 92, 255, 0.18), transparent 60%),
    radial-gradient(ellipse at 80% 110%, rgba(53, 208, 165, 0.1), transparent 55%),
    var(--bg-elevated);
  overflow: hidden;
}
.cta-box img {
  border-radius: 18px;
  box-shadow: 0 12px 40px rgba(124, 92, 255, 0.35);
  margin-bottom: 28px;
}
.cta-box h2 {
  font-size: clamp(30px, 4.6vw, 48px);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 34px;
}

/* ============ Footer ============ */

.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 48px 24px 60px;
}
.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  gap: 20px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}
.footer-brand img {
  border-radius: 6px;
}
.footer-disclaimer {
  color: var(--text-faint);
  font-size: 13px;
  max-width: 640px;
  margin: 0;
}
.footer-links {
  display: flex;
  gap: 22px;
}
.footer-links a {
  color: var(--text-dim);
  font-size: 13.5px;
}
.footer-links a:hover {
  color: var(--text);
}

/* ============ Reveal animations ============ */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.9s var(--ease),
    transform 0.9s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
/* Parallaxed elements get their transform driven by JS every frame:
   restrict the reveal transition to opacity so parallax stays 1:1 with scroll. */
.reveal[data-parallax] {
  transform: none;
  transition: opacity 0.9s var(--ease);
}
/* stagger siblings */
.steps .reveal:nth-child(2),
.bento .reveal:nth-child(2),
.surfaces .reveal:nth-child(2) {
  transition-delay: 0.1s;
}
.steps .reveal:nth-child(3),
.bento .reveal:nth-child(3),
.surfaces .reveal:nth-child(3) {
  transition-delay: 0.2s;
}
.bento .reveal:nth-child(4) {
  transition-delay: 0.1s;
}
.bento .reveal:nth-child(5) {
  transition-delay: 0.2s;
}
.bento .reveal:nth-child(6) {
  transition-delay: 0.3s;
}

/* ============ Responsive ============ */

@media (max-width: 900px) {
  .steps,
  .surfaces {
    grid-template-columns: 1fr;
  }
  .split {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-top: 64px;
  }
  .bento {
    grid-template-columns: 1fr;
  }
  .bento-big {
    grid-column: span 1;
  }
  .local-grid {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 90px 20px;
  }
  .nav-links {
    display: none;
  }
}

/* ============ Reduced motion ============ */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-scroll-hint span {
    animation: none;
  }
  .orb,
  .step,
  .surface,
  .terminal,
  .hero-icon {
    will-change: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}