/* ============================================================
   KeyDev Studios — Design System
   Dark precision theme. Syne + DM Sans + JetBrains Mono.
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── CSS Variables ────────────────────────────────────────── */
:root {
  /* Colours */
  --bg:            #080B0F;
  --bg-2:          #0C1018;
  --surface:       #0F1318;
  --surface-2:     #161C24;
  --surface-hover: #1C242E;
  --accent:        #00E5FF;
  --accent-dim:    rgba(0, 229, 255, 0.08);
  --accent-glow:   rgba(0, 229, 255, 0.2);
  --text:          #EDF2F7;
  --text-muted:    #64748B;
  --text-faint:    #374151;
  --border:        rgba(255, 255, 255, 0.07);
  --border-accent: rgba(0, 229, 255, 0.25);

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Sizes */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;
  --text-7xl:  4.5rem;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --max-width:       1200px;
  --container-px:    1.5rem;
  --section-py:      5rem;

  /* Border radius */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ── Dot grid background ──────────────────────────────────── */
.dot-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}

/* ── Section label (mono tag) ─────────────────────────────── */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.section-tag::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--accent);
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: all var(--transition-base);
  white-space: nowrap;
  min-height: 44px;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
}

.btn--primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition-fast);
}

.btn--primary:hover::before {
  background: rgba(255,255,255,0.12);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  border-color: rgba(255,255,255,0.2);
  color: var(--text);
  background: var(--surface);
}

.btn--outline-accent {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border-accent);
}

.btn--outline-accent:hover {
  background: var(--accent-dim);
  transform: translateY(-1px);
}

.btn--lg {
  padding: 1rem 2.25rem;
  font-size: var(--text-base);
}

/* ── Header / Nav ─────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background var(--transition-base), border-color var(--transition-base);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background: rgba(8, 11, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.85;
}

.logo img {
  display: block;
  height: 100px;
  width: auto;
}

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

.nav-link {
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-weight: 400;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--transition-base);
}

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

.nav-link:hover::after {
  width: 100%;
}

.nav-cta {
  font-size: var(--text-sm);
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--accent);
  color: var(--bg);
  transition: all var(--transition-base);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--accent-glow);
}

/* ── Mobile menu button ───────────────────────────────────── */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
  z-index: 200;
  position: relative;
}

.mobile-menu-btn span {
  display: block;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.mobile-menu-btn span:nth-child(1) { width: 24px; }
.mobile-menu-btn span:nth-child(2) { width: 16px; }
.mobile-menu-btn span:nth-child(3) { width: 20px; }

.mobile-menu-btn.open span:nth-child(1) {
  width: 22px;
  transform: translateY(6.5px) rotate(45deg);
}

.mobile-menu-btn.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-menu-btn.open span:nth-child(3) {
  width: 22px;
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Mobile drawer ────────────────────────────────────────── */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 85vw);
  background: var(--bg-2);
  border-left: 1px solid var(--border);
  z-index: 150;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  padding: var(--space-8) var(--space-6);
}

.mobile-drawer.open {
  transform: translateX(0);
}

.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 140;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  backdrop-filter: blur(4px);
}

.mobile-drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-10);
}

.mobile-close-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.mobile-close-btn:hover {
  color: var(--text);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
}

.mobile-nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--text);
  background: var(--surface);
}

.mobile-drawer-cta {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
}

.mobile-drawer-cta .btn {
  width: 100%;
  justify-content: center;
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(68px + var(--space-16)) 0 var(--space-24);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(0, 229, 255, 0.07) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 910px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 0.6s ease forwards 0.1s;
}

.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, var(--text-7xl));
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: var(--space-6);
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 0.7s ease forwards 0.25s;
}

.hero h1 em,
.hero h1 .hero-highlight {
  font-style: normal;
  color: var(--accent);
}

.hero-sub {
  font-size: clamp(1rem, 2vw, var(--text-xl));
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.65;
  margin-bottom: var(--space-4);
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 0.7s ease forwards 0.4s;
}

.hero-supporting {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--text-faint);
  margin-bottom: var(--space-10);
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 0.7s ease forwards 0.5s;
}

.hero-supporting strong {
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 0.7s ease forwards 0.6s;
}

/* ── Trust strip ──────────────────────────────────────────── */
.trust-strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--space-6) 0;
  background: var(--surface);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  align-items: center;
}

.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-4);
  position: relative;
}

.trust-item + .trust-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20%;
  bottom: 20%;
  width: 1px;
  background: var(--border);
}

.trust-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  font-feature-settings: 'tnum' 1;
  margin-bottom: var(--space-1);
}

.trust-label {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── Sections ─────────────────────────────────────────────── */
.section {
  padding: var(--section-py) 0;
}

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

.section-header {
  margin-bottom: var(--space-16);
}

.section-header.center {
  text-align: center;
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
  color: var(--text);
  margin-bottom: var(--space-4);
}

.section-intro {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.65;
}

.section-header.center .section-intro {
  margin: 0 auto;
}

/* ── Services ─────────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.06);
  transform: translateY(-2px);
}

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

.service-card-header {
  margin-bottom: var(--space-6);
}

.service-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: var(--space-2);
}

.service-tagline {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.5;
}

.service-pricing {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border);
}

.service-price {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
}

.service-was {
  font-size: var(--text-sm);
  color: var(--text-faint);
  text-decoration: line-through;
  text-decoration-color: var(--text-faint);
}

.service-inclusions {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.service-inclusion {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.5;
}

.service-inclusion::before {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  min-width: 14px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='M2.5 6l2.5 2.5 4.5-5' stroke='%2300E5FF' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: 10px;
  background-position: center;
  background-repeat: no-repeat;
  margin-top: 2px;
  flex-shrink: 0;
}

/* ── How it works ─────────────────────────────────────────── */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.step-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-accent);
  background: var(--accent-dim);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--accent);
}

.step-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.step-body {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── About ────────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-content .section-heading {
  font-size: clamp(var(--text-3xl), 3.5vw, var(--text-5xl));
}

.about-paragraphs {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.about-paragraphs p {
  font-size: var(--text-base);
  color: var(--text-muted);
  line-height: 1.75;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.about-stat {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: border-color var(--transition-fast);
}

.about-stat:hover {
  border-color: var(--border-accent);
}

.about-stat-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: var(--radius-sm);
  background: var(--accent-dim);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
}

/* ── Guarantee ────────────────────────────────────────────── */
.guarantee-inner {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-16);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  overflow: hidden;
}

.guarantee-inner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,255,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.guarantee-heading {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: var(--space-4);
  line-height: 1.15;
}

.guarantee-body {
  font-size: var(--text-base);
  color: var(--text-muted);
  line-height: 1.75;
}

.guarantee-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.guarantee-point {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-weight: 400;
  transition: border-color var(--transition-fast);
}

.guarantee-point:hover {
  border-color: var(--border-accent);
  color: var(--text);
}

.guarantee-point-dot {
  width: 6px;
  height: 6px;
  min-width: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ── CTA band ─────────────────────────────────────────────── */
.cta-band {
  padding: var(--section-py) 0;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-band-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 80% at 50% 50%, rgba(0, 229, 255, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.cta-band-inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
}

.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: var(--space-4);
}

.cta-band p {
  font-size: var(--text-lg);
  color: var(--text-muted);
  margin-bottom: var(--space-8);
}

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--space-12) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-12);
  align-items: start;
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--border);
}

.footer-brand .logo {
  margin-bottom: var(--space-3);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--text-muted);
  max-width: 320px;
  line-height: 1.6;
}

.footer-nav {
  display: flex;
  gap: var(--space-8);
}

.footer-nav a {
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--text-faint);
}

.footer-email {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

/* ── Scroll to top ────────────────────────────────────────── */
.scroll-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
  z-index: 50;
}

.scroll-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.scroll-to-top:hover {
  border-color: var(--border-accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ── Animations ───────────────────────────────────────────── */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.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; }

/* ── Contact page ─────────────────────────────────────────── */
.contact-hero {
  padding: calc(68px + var(--space-16)) 0 var(--space-12);
  border-bottom: 1px solid var(--border);
}

.contact-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: var(--space-4);
}

.contact-lead {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 480px;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: var(--space-16);
  align-items: start;
  padding: var(--space-16) 0;
}

.contact-info h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: var(--space-6);
}

.contact-detail {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.contact-detail-item {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.contact-detail-item strong {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-1);
}

.contact-response {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.contact-response-dot {
  width: 8px;
  height: 8px;
  min-width: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ── Form ─────────────────────────────────────────────────── */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  min-height: 44px;
  -webkit-appearance: none;
  appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M4 6l4 4 4-4' stroke='%2364748B' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-group select option {
  background: var(--surface-2);
  color: var(--text);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--border-accent);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.08);
}

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

.form-submit {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.form-success,
.form-error {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  display: none;
}

.form-success {
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--border-accent);
  color: var(--accent);
}

.form-error {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: #FC8181;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  :root {
    --section-py: 4rem;
  }

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

  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .guarantee-inner {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

@media (max-width: 768px) {
  :root {
    --section-py: 3rem;
    --container-px: 1.25rem;
  }

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

  .hero {
    padding: calc(68px + 3rem) 0 3rem;
    min-height: auto;
  }

  .hero h1 {
    font-size: clamp(2rem, 9vw, 2.75rem);
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
  }

  .trust-item + .trust-item::before {
    display: none;
  }

  .trust-item {
    border: 1px solid var(--border);
  }

  .trust-item:nth-child(1) { border-radius: var(--radius-md) 0 0 0; }
  .trust-item:nth-child(2) { border-radius: 0 var(--radius-md) 0 0; border-left: none; }
  .trust-item:nth-child(3) { border-radius: 0 0 0 var(--radius-md); border-top: none; }
  .trust-item:nth-child(4) { border-radius: 0 0 var(--radius-md) 0; border-left: none; border-top: none; }

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

  .steps-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .step-card {
    flex-direction: row;
    align-items: flex-start;
  }

  .step-number {
    flex-shrink: 0;
  }

  .guarantee-inner {
    padding: var(--space-8);
  }

  .guarantee-points {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-nav {
    flex-wrap: wrap;
    gap: var(--space-4);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: var(--space-10);
    padding: var(--space-10) 0;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: clamp(1.875rem, 9vw, 2.25rem);
  }

  .cta-band h2 {
    font-size: var(--text-3xl);
  }

  .section-heading {
    font-size: var(--text-3xl);
  }
}

/* ── Legal pages ──────────────────────────────────────────── */
.legal-content {
  max-width: 760px;
  margin: 0 auto;
}

.legal-block {
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--border);
}

.legal-block:last-child {
  border-bottom: none;
}

.legal-block h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: var(--space-4);
}

.legal-block p {
  font-size: var(--text-base);
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-4);
}

.legal-block p:last-child {
  margin-bottom: 0;
}

.legal-block ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  padding-left: var(--space-4);
}

.legal-block ul li {
  font-size: var(--text-base);
  color: var(--text-muted);
  line-height: 1.65;
  position: relative;
}

.legal-block ul li::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-4));
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.legal-block a {
  color: var(--accent);
  transition: opacity var(--transition-fast);
}

.legal-block a:hover {
  opacity: 0.8;
}

.legal-block strong {
  color: var(--text);
  font-weight: 500;
}