/* ============================================================
   ZOTEK AI — styles.css
   Dark theme · Inter · Mobile-first · No framework
   ============================================================ */

/* ============================================================
   0. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================================ */
:root {
  /* Colors */
  --color-bg:            #0a0a0a;
  --color-surface:       #111111;
  --color-surface-raised:#1a1a1a;
  --color-border:        #2a2a2a;
  --color-border-subtle: #1e1e1e;

  --color-text:          #f0f0f0;
  --color-text-muted:    #8a8a8a;
  --color-text-dim:      #555555;

  --color-accent:        #00d4aa;
  --color-accent-dim:    #00a884;
  --color-accent-glow:   rgba(0, 212, 170, 0.15);
  --color-accent-glow-strong: rgba(0, 212, 170, 0.25);

  --color-gold:          #c9a84c;
  --color-danger:        #ff4444;

  /* Typography */
  --font-sans:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:   'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --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;

  --leading-tight:  1.1;
  --leading-snug:   1.25;
  --leading-normal: 1.6;
  --leading-relaxed:1.75;

  /* 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 */
  --container-max: 1200px;
  --container-pad: var(--space-6);

  /* Borders & Radius */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-full:9999px;

  /* Transitions */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 400ms;

  /* Shadows */
  --shadow-card:  0 1px 3px rgba(0,0,0,0.5), 0 4px 16px rgba(0,0,0,0.3);
  --shadow-glow:  0 0 40px var(--color-accent-glow);
  --shadow-glow-strong: 0 0 80px var(--color-accent-glow-strong);

  /* Nav */
  --nav-height: 72px;
}

/* ============================================================
   1. RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
}

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

ul, ol {
  list-style: none;
}

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

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Selection */
::selection {
  background: var(--color-accent-glow-strong);
  color: var(--color-text);
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-dim); }

/* ============================================================
   2. LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ============================================================
   3. TYPOGRAPHY UTILITIES
   ============================================================ */
.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.section-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: var(--leading-relaxed);
}

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

.section-header .section-sub {
  margin: 0 auto;
}

/* ============================================================
   4. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition:
    background-color var(--duration-base) var(--ease-out),
    color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background-color: var(--color-accent);
  color: #000;
}

.btn-primary:hover {
  background-color: var(--color-accent-dim);
  box-shadow: 0 0 24px var(--color-accent-glow-strong);
}

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

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--color-accent-glow);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  border-radius: var(--radius-lg);
}

/* ============================================================
   5. NAVIGATION
   ============================================================ */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background-color: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition:
    border-color var(--duration-base) var(--ease-out),
    background-color var(--duration-base) var(--ease-out);
}

.nav-header.scrolled {
  border-bottom-color: var(--color-border-subtle);
  background-color: rgba(10, 10, 10, 0.95);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0;
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.logo-mark {
  color: var(--color-accent);
  font-size: 1.4em;
  line-height: 1;
}

.logo-text {
  color: var(--color-text);
}

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

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  right: 100%;
  height: 1px;
  background-color: var(--color-accent);
  transition: right var(--duration-base) var(--ease-out);
}

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

.nav-link:hover::after {
  right: 0;
}

.nav-cta-link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  transition:
    background-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

.nav-cta-link:hover {
  background-color: var(--color-accent-glow);
  box-shadow: 0 0 16px var(--color-accent-glow);
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  transition: background-color var(--duration-fast);
  flex-shrink: 0;
}

.nav-toggle:hover {
  background-color: var(--color-surface-raised);
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-base) var(--ease-out);
}

/* Open state */
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

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

/* Grid background */
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border-subtle) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 0%, transparent 100%);
  opacity: 0.4;
}

/* Accent glow */
.hero-glow {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, var(--color-accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: var(--space-20);
  padding-bottom: var(--space-32);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-8);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.hero-headline {
  font-size: clamp(var(--text-4xl), 7vw, var(--text-7xl));
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

.hero-headline .accent {
  color: var(--color-accent);
  background: linear-gradient(135deg, #00d4aa, #0099cc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subhead {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: var(--color-text-muted);
  max-width: 560px;
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-10);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
  margin-bottom: var(--space-16);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex-wrap: wrap;
  justify-content: center;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.stat-number {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

/* ============================================================
   7. SERVICES
   ============================================================ */
.services {
  padding: var(--space-32) 0;
  background-color: var(--color-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.service-card {
  position: relative;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition:
    border-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
  overflow: hidden;
}

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

.service-card:hover {
  border-color: var(--color-accent-dim);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

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

.service-card--featured {
  border-color: var(--color-accent);
  background: linear-gradient(160deg, var(--color-surface-raised) 0%, var(--color-surface) 100%);
}

.service-card--featured::before {
  opacity: 0.6;
}

.service-card--featured:hover {
  box-shadow: var(--shadow-glow-strong);
}

.service-featured-badge {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #000;
  background-color: var(--color-accent);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background-color: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
}

.service-number {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-text-dim);
  text-transform: uppercase;
}

.service-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.service-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  flex-grow: 1;
}

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

.service-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-5);
  position: relative;
}

.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
  opacity: 0.7;
}

.service-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.tech-tag {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  background-color: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
}

/* ============================================================
   8. ABOUT
   ============================================================ */
.about {
  padding: var(--space-32) 0;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-16);
  align-items: center;
}

.about-text .section-title {
  font-size: clamp(var(--text-2xl), 3.5vw, var(--text-4xl));
}

.about-body {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-5);
}

.about-body strong {
  color: var(--color-text);
  font-weight: 600;
}

.about-creds {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.cred {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.cred-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--color-accent-glow);
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}

/* Founder card */
.about-card-wrap {
  display: flex;
  justify-content: center;
}

.about-card {
  background-color: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  width: 100%;
  max-width: 360px;
  box-shadow: var(--shadow-card);
}

.about-card-avatar {
  background: linear-gradient(135deg, var(--color-accent), #0099cc);
  color: #000;
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-card-body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.about-card-name {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.about-card-role {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
}

.about-card-title {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 400;
}

.about-card-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-4) 0;
}

.about-card-quote {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
  line-height: var(--leading-relaxed);
}

/* ============================================================
   9. SOCIAL PROOF
   ============================================================ */
.proof {
  padding: var(--space-32) 0;
  background-color: var(--color-bg);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.proof-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition:
    border-color var(--duration-base) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.proof-card:hover {
  border-color: var(--color-border);
  transform: translateY(-2px);
}

.proof-stars {
  color: var(--color-gold);
  font-size: var(--text-base);
  letter-spacing: 2px;
}

.proof-quote {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  font-style: italic;
  flex-grow: 1;
}

.proof-attribution {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: auto;
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border-subtle);
}

.proof-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-surface-raised), var(--color-border));
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.proof-name {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
  font-style: normal;
}

.proof-biz {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* ============================================================
   10. PROCESS
   ============================================================ */
.process {
  padding: var(--space-32) 0;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
  max-width: 900px;
  margin: 0 auto;
}

.process-step {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}

.step-number {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  font-family: var(--font-mono);
  background-color: var(--color-accent-glow);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-3);
  flex-shrink: 0;
  margin-top: 2px;
}

.step-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.step-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

/* ============================================================
   11. CTA SECTION
   ============================================================ */
.cta-section {
  position: relative;
  padding: var(--space-32) 0;
  background-color: var(--color-bg);
  overflow: hidden;
  text-align: center;
}

.cta-glow {
  position: absolute;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse, var(--color-accent-glow) 0%, transparent 65%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta-headline {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-6xl));
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
  max-width: 700px;
}

.cta-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 540px;
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-10);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
  margin-bottom: var(--space-6);
}

.cta-reassurance {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
}

/* ============================================================
   12. FOOTER
   ============================================================ */
.footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
}

.footer-inner {
  padding: var(--space-16) var(--container-pad);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-16);
  align-items: start;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-logo {
  margin-bottom: var(--space-2);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 280px;
  line-height: var(--leading-relaxed);
}

.footer-location {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
}

.footer-nav {
  display: flex;
  gap: var(--space-16);
}

.footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-nav-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.footer-nav-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border-subtle);
}

.footer-bottom-inner {
  padding: var(--space-5) var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

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

/* ============================================================
   13. ANIMATIONS / SCROLL REVEALS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }

/* ============================================================
   14. RESPONSIVE — TABLET (≤ 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
  }

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

  .about-card-wrap {
    order: -1;
  }

  .proof-grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
  }

  .process-steps {
    grid-template-columns: 1fr;
    max-width: 600px;
  }

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

  .footer-nav {
    gap: var(--space-10);
  }
}

/* ============================================================
   15. RESPONSIVE — MOBILE (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --container-pad: var(--space-5);
    --nav-height: 64px;
  }

  /* Nav mobile */
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4) 0;
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition:
      transform var(--duration-base) var(--ease-out),
      opacity var(--duration-base) var(--ease-out);
    z-index: 999;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links li {
    border-bottom: 1px solid var(--color-border-subtle);
  }

  .nav-link {
    display: block;
    padding: var(--space-4) var(--container-pad);
    font-size: var(--text-base);
    color: var(--color-text);
  }

  .nav-link::after { display: none; }

  .nav-cta-link {
    display: block;
    margin: var(--space-4) var(--container-pad) var(--space-2);
    text-align: center;
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-5);
  }

  .nav-toggle {
    display: flex;
  }

  /* Hero mobile */
  .hero-stats {
    flex-direction: column;
    gap: var(--space-5);
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
  }

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

  /* Footer mobile */
  .footer-nav {
    flex-wrap: wrap;
    gap: var(--space-8);
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  /* CTA */
  .cta-actions {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
  }

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

/* ============================================================
   16. RESPONSIVE — SMALL MOBILE (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {
  .hero-headline {
    font-size: var(--text-4xl);
  }

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

  .service-card {
    padding: var(--space-6);
  }

  .process-step {
    flex-direction: column;
    gap: var(--space-3);
  }
}

/* ============================================================
   17. REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}