/* ================================================
   NEURIOT - AI + IoT Platform
   Global Styles
   ================================================ */

:root {
  --bg-primary: #050508;
  --bg-secondary: #0d0d1a;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(124, 58, 237, 0.4);

  --blue-deep: #1d4ed8;
  --blue-mid: #3b82f6;
  --blue-light: #60a5fa;
  --purple-deep: #6d28d9;
  --purple-mid: #7c3aed;
  --purple-light: #a855f7;
  --purple-neon: #c084fc;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #475569;

  --gradient-hero: linear-gradient(135deg, #0d0d1a 0%, #1a0a2e 50%, #0a1628 100%);
  --gradient-accent: linear-gradient(135deg, #7c3aed, #3b82f6);
  --gradient-card: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(59, 130, 246, 0.05));
  --gradient-text: linear-gradient(135deg, #a855f7, #60a5fa);

  --font-sans: 'Pretendard', 'Apple SD Gothic Neo', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.15);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-button: 0 8px 32px rgba(124, 58, 237, 0.3);

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

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ─────────────────────────────── */

h1, h2, h3, h4, h5 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--purple-light);
}

/* ── Layout ──────────────────────────────────── */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 100px 0;
}

/* ── Navigation ──────────────────────────────── */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 24px;
  transition: var(--transition);
}

nav.scrolled {
  background: rgba(5, 5, 8, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  width: 34px;
  height: 34px;
  background: var(--gradient-accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 16px;
  color: white;
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
}

.logo-text {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 8px 14px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-login {
  padding: 8px 18px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-login:hover {
  color: var(--text-primary);
}

/* ── Buttons ─────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-accent);
  color: white;
  box-shadow: var(--shadow-button);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(124, 58, 237, 0.45);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-card);
  border-color: rgba(124, 58, 237, 0.4);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
  border-radius: var(--radius-lg);
}

/* ── Hero Section ────────────────────────────── */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 80px 24px 40px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(124, 58, 237, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 58, 237, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}

.hero-orb-1 {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  animation: float 8s ease-in-out infinite;
}

.hero-orb-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
  bottom: -50px;
  left: 10%;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.25);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--purple-neon);
  margin-bottom: 28px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--purple-neon);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.8rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 500px;
}

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

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.hero-stat-value {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-diagram {
  position: relative;
  width: 420px;
  height: 420px;
}

.diagram-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(124, 58, 237, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.diagram-ring-1 {
  width: 100%;
  height: 100%;
  top: 0; left: 0;
  animation: spin 30s linear infinite;
}

.diagram-ring-2 {
  width: 72%;
  height: 72%;
  top: 14%; left: 14%;
  border-color: rgba(59, 130, 246, 0.2);
  animation: spin 20s linear infinite reverse;
}

.diagram-center {
  position: absolute;
  width: 120px;
  height: 120px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: var(--gradient-accent);
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 60px rgba(124, 58, 237, 0.4);
  z-index: 2;
}

.diagram-center-text {
  font-size: 1.4rem;
  font-weight: 900;
  color: white;
  letter-spacing: -0.04em;
}

.diagram-center-sub {
  font-size: 0.6rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.diagram-node {
  position: absolute;
  width: 52px;
  height: 52px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
}

.diagram-ring-1 .diagram-node {
  animation: spin-reverse 30s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes spin-reverse {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

/* ── Section Headers ─────────────────────────── */

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 70px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin: 12px 0 20px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Features Section ────────────────────────── */

.features {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--gradient-card);
  border: 1px solid rgba(124, 58, 237, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 24px;
}

.feature-title {
  font-size: 1.2rem;
  margin-bottom: 12px;
  font-weight: 700;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(124, 58, 237, 0.1);
  border: 1px solid rgba(124, 58, 237, 0.2);
  color: var(--purple-neon);
}

/* ── Architecture Section ────────────────────── */

.architecture {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.arch-layers {
  display: flex;
  flex-direction: column;
  gap: 3px;
  max-width: 900px;
  margin: 0 auto;
}

.arch-layer {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  align-items: stretch;
  position: relative;
}

.arch-connector {
  display: flex;
  justify-content: center;
  padding: 4px 0;
  color: var(--border-glow);
  font-size: 1.2rem;
  opacity: 0.6;
}

.arch-layer-label {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 24px;
}

.arch-layer-name {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--purple-light);
  margin-bottom: 6px;
}

.arch-layer-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: rgba(124, 58, 237, 0.12);
  line-height: 1;
}

.arch-layer-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  transition: var(--transition);
}

.arch-layer-card:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
}

.arch-info h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.arch-info p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.arch-tags {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* ── Developer Section ───────────────────────── */

.developer {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.developer-content {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
  align-items: center;
}

.code-window {
  background: #0d0d1a;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-glow);
}

.code-header {
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 14px;
}

.code-dots {
  display: flex;
  gap: 6px;
}

.code-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.code-dot-red { background: #ff5f57; }
.code-dot-yellow { background: #febc2e; }
.code-dot-green { background: #28c840; }

.code-filename {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.code-tabs {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.code-tab {
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  transition: var(--transition);
}

.code-tab.active {
  background: rgba(124, 58, 237, 0.15);
  border-color: rgba(124, 58, 237, 0.3);
  color: var(--purple-neon);
}

.code-body {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  overflow-x: auto;
}

.code-line-number {
  color: var(--text-muted);
  user-select: none;
  margin-right: 20px;
  opacity: 0.5;
}

.c-comment { color: #6a9955; }
.c-keyword { color: #c792ea; }
.c-string { color: #c3e88d; }
.c-func { color: #82aaff; }
.c-var { color: #f78c6c; }
.c-number { color: #f78c6c; }
.c-prop { color: #89ddff; }
.c-operator { color: #89ddff; }

/* ── Stats Section ───────────────────────────── */

.stats {
  background: var(--bg-primary);
  padding: 80px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px;
  text-align: center;
}

.stat-item {
  padding: 32px 20px;
}

.stat-number {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ── Testimonials ────────────────────────────── */

.testimonials {
  background: var(--bg-secondary);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.testimonial-quote {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
  position: relative;
}

.testimonial-quote::before {
  content: '"';
  font-size: 3rem;
  color: var(--purple-mid);
  opacity: 0.3;
  position: absolute;
  top: -16px;
  left: -8px;
  font-family: serif;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: white;
  flex-shrink: 0;
}

.testimonial-name {
  font-size: 0.9rem;
  font-weight: 600;
}

.testimonial-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ── CTA Section ─────────────────────────────── */

.cta-section {
  padding: 120px 0;
  text-align: center;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 50%, rgba(124, 58, 237, 0.08), transparent);
}

.cta-title {
  font-size: clamp(2.2rem, 4.5vw, 3.5rem);
  margin-bottom: 20px;
  position: relative;
}

.cta-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 48px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  position: relative;
}

/* ── Footer ──────────────────────────────────── */

footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 16px 0 24px;
  max-width: 260px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social-link {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1rem;
  transition: var(--transition);
}

.footer-social-link:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
}

.footer-col h4 {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-bottom-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-bottom-links a:hover {
  color: var(--text-primary);
}

/* ── Page Hero (sub-pages) ───────────────────── */

.page-hero {
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
}

.page-hero-title {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  margin: 12px 0 20px;
}

.page-hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Pricing Cards ───────────────────────────── */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  transition: var(--transition);
}

.pricing-card.featured {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.15), rgba(59, 130, 246, 0.08));
  border-color: rgba(124, 58, 237, 0.4);
  position: relative;
}

.pricing-card.featured::before {
  content: '인기';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-accent);
  color: white;
  padding: 4px 16px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
}

.pricing-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.pricing-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 32px;
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.price-amount {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: -0.05em;
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.pricing-features li::before {
  content: '✓';
  color: var(--purple-light);
  font-weight: 700;
  flex-shrink: 0;
}

/* ── Mobile Menu ─────────────────────────────── */

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── Responsive ──────────────────────────────── */

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 60px;
    text-align: center;
  }
  .hero-subtitle { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }

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

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

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

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

@media (max-width: 768px) {
  section { padding: 70px 0; }

  .nav-links, .nav-login { display: none; }
  .mobile-menu-btn { display: flex; }

  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .arch-layer {
    grid-template-columns: 1fr;
  }
  .arch-layer-label { padding: 12px 0; }
  .arch-layer-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .arch-tags { justify-content: flex-start; }
}

/* ── Animations ──────────────────────────────── */

[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

[data-delay="1"] { transition-delay: 0.1s; }
[data-delay="2"] { transition-delay: 0.2s; }
[data-delay="3"] { transition-delay: 0.3s; }
[data-delay="4"] { transition-delay: 0.4s; }