/* ============================================================
   Code Foundation — app.css (v3)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600&display=swap');

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

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  --bg-0:  #03060e;
  --bg-1:  #080d1a;
  --bg-2:  #0e1525;
  --bg-3:  #141d30;
  --bg-4:  #1c2640;

  --accent:        #22d3ee;
  --accent-dim:    rgba(34, 211, 238, 0.12);
  --accent-glow:   rgba(34, 211, 238, 0.25);

  --purple:        #a78bfa;
  --purple-dim:    rgba(167, 139, 250, 0.12);

  --text-1: #f0f6fc;
  --text-2: #c9d1db;
  --text-3: #8b949e;
  --text-4: #6a737d;

  --border:        rgba(255, 255, 255, 0.06);
  --border-2:      rgba(255, 255, 255, 0.10);
  --border-accent: rgba(34, 211, 238, 0.25);

  --r-sm: 8px;
  --r:    12px;
  --r-lg: 18px;
  --r-xl: 24px;

  --font-body:    'Inter', -apple-system, system-ui, sans-serif;
  --font-display: 'Plus Jakarta Sans', -apple-system, system-ui, sans-serif;

  --shadow:      0 4px 24px rgba(0, 0, 0, 0.50);
  --shadow-lg:   0 16px 64px rgba(0, 0, 0, 0.60);
  --shadow-glow: 0 8px 32px rgba(34, 211, 238, 0.18);

  --gradient:    linear-gradient(135deg, var(--accent), var(--purple));
  --gradient-bg: linear-gradient(135deg, rgba(34,211,238,0.07), rgba(167,139,250,0.07));

  --t:     0.15s ease;
  --t-med: 0.25s ease;

  --section-py: clamp(64px, 8vw, 112px);
  --gutter:     clamp(20px, 4vw, 48px);
}

/* ============================================================
   BASE
   ============================================================ */
html { scroll-behavior: smooth; }

body {
  background: var(--bg-1);
  color: var(--text-1);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--text-1);
}

p   { color: var(--text-2); }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section     { padding-block: var(--section-py); }
.section-alt { background: var(--bg-0); }

/* ============================================================
   TYPOGRAPHY HELPERS
   ============================================================ */
.label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.label::before {
  content: '';
  display: block;
  width: 18px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.section-header { margin-bottom: 56px; }
.section-header.centered {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: 56px;
}

.section-title {
  font-size: clamp(1.875rem, 3.5vw, 2.75rem);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-3);
  line-height: 1.75;
}

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

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--r);
  border: 1.5px solid transparent;
  transition: all var(--t);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-0);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: #38e4fc;
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border-color: var(--border-2);
}
.btn-ghost:hover {
  color: var(--accent);
  border-color: var(--border-accent);
  background: var(--accent-dim);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
  border-radius: 14px;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding-block: 18px;
  transition: background var(--t-med), border-color var(--t-med), padding var(--t-med);
}
.nav.scrolled {
  padding-block: 12px;
  background: rgba(8, 13, 26, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo { display: flex; align-items: center; }
.nav-logo img { height: 36px; width: auto; }
.nav-logo-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--text-1);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-3);
  border-radius: var(--r-sm);
  transition: color var(--t), background var(--t);
}
.nav-link:hover,
.nav-link.active { color: var(--text-1); background: rgba(255,255,255,0.05); }

.nav-link .chevron { transition: transform var(--t); }
.nav-item:hover .nav-link .chevron { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown::before {
  content: '';
  position: absolute;
  top: -10px;
  left: 0;
  right: 0;
  height: 10px;
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 280px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: var(--r-lg);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-8px);
  transition: all var(--t-med);
  box-shadow: var(--shadow);
}
.nav-item:hover .nav-dropdown,
.nav-item:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
  transform: translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: 9px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-3);
  border-radius: var(--r-sm);
  transition: color var(--t), background var(--t);
}
.nav-dropdown a:hover { color: var(--text-1); background: rgba(255,255,255,0.06); }

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 6px;
  border-radius: var(--r-sm);
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text-2);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.nav-toggle span:nth-child(1) { width: 22px; }
.nav-toggle span:nth-child(2) { width: 16px; }
.nav-toggle span:nth-child(3) { width: 22px; }
.nav-toggle.open span:nth-child(1) { width: 22px; transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { width: 22px; transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO — Homepage
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-block: 120px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 15% 50%, rgba(34,211,238,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(167,139,250,0.07) 0%, transparent 60%),
    var(--bg-1);
}
.hero-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: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 10%, transparent 90%);
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 10%, transparent 90%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px 6px 10px;
  background: var(--accent-dim);
  border: 1px solid rgba(34,211,238,0.2);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}
.hero-badge-dot {
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.75); }
}

.hero-title {
  font-size: clamp(2.75rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: clamp(1rem, 1.75vw, 1.1875rem);
  color: var(--text-3);
  line-height: 1.75;
  max-width: 520px;
  margin-bottom: 40px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ============================================================
   PAGE HERO — Subpages
   ============================================================ */
.page-hero {
  position: relative;
  padding-block: 140px 72px;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 25% 50%, rgba(34,211,238,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 30%, rgba(167,139,250,0.05) 0%, transparent 50%),
    var(--bg-1);
}
.page-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 700px;
}
.page-hero-title {
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.page-hero-desc {
  font-size: 1.0625rem;
  color: var(--text-3);
  line-height: 1.75;
}

/* ============================================================
   SERVICE CARDS
   ============================================================ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 32px;
  transition: border-color var(--t-med), transform var(--t-med), box-shadow var(--t-med);
}
.card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 24px 64px rgba(0,0,0,0.35);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-dim);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}

.card-title  { font-size: 1.1875rem; font-weight: 700; margin-bottom: 10px; }
.card-desc   { font-size: 0.9375rem; color: var(--text-3); line-height: 1.65; margin-bottom: 24px; }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  transition: gap var(--t);
}
.card-link svg { transition: transform var(--t); }
.card:hover .card-link svg { transform: translateX(4px); }

/* ============================================================
   PROCESS STEPS
   ============================================================ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 20px;
}
.step {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 28px;
}
.step-num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.step-num::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.step-title { font-size: 1.0625rem; font-weight: 700; margin-bottom: 8px; }
.step-desc  { font-size: 0.875rem; color: var(--text-3); line-height: 1.65; }

/* ============================================================
   FEATURE CARDS
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature {
  padding: 28px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  transition: border-color var(--t-med);
}
.feature:hover { border-color: rgba(167,139,250,0.2); }

.feature-icon {
  width: 44px;
  height: 44px;
  background: var(--purple-dim);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--purple);
  margin-bottom: 16px;
}
.feature-title { font-size: 1.0625rem; margin-bottom: 8px; }
.feature-desc  { font-size: 0.875rem; color: var(--text-3); line-height: 1.65; }

/* ============================================================
   FAQ ACCORDION
   ============================================================ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 800px;
}

.faq-item {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color var(--t-med);
}
.faq-item.open { border-color: var(--border-accent); }

.faq-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  user-select: none;
}

.faq-question {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-1);
  line-height: 1.4;
}

.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--bg-4);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  transition: background var(--t), color var(--t), transform var(--t);
}
.faq-item.open .faq-icon {
  background: var(--accent);
  color: var(--bg-0);
  transform: rotate(45deg);
}

.faq-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease;
}
.faq-item.open .faq-body { grid-template-rows: 1fr; }

.faq-body-inner { overflow: hidden; }
.faq-item.open .faq-body-inner { padding: 0 24px 22px; }

.faq-body-inner p {
  font-size: 0.9375rem;
  color: var(--text-3);
  line-height: 1.75;
}
.faq-body-inner p + p { margin-top: 12px; }

/* ============================================================
   CTA BLOCK
   ============================================================ */
.cta-block {
  background: var(--gradient-bg);
  border: 1px solid rgba(34,211,238,0.12);
  border-radius: var(--r-xl);
  padding: clamp(48px, 6vw, 88px) clamp(32px, 5vw, 80px);
  text-align: center;
}
.cta-block h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: 16px;
}
.cta-block p {
  color: var(--text-3);
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: 36px;
  font-size: 1.0625rem;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}

.contact-info-block {
  position: sticky;
  top: 100px;
}
.contact-info-block h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  margin-bottom: 14px;
}
.contact-info-block > p {
  color: var(--text-3);
  line-height: 1.7;
  margin-bottom: 36px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}
.contact-item-icon {
  width: 44px;
  height: 44px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}
.contact-item-body span {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-4);
  margin-bottom: 3px;
}
.contact-item-body a,
.contact-item-body strong {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-1);
}
.contact-item-body a:hover { color: var(--accent); }

.form-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 36px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-group  { margin-bottom: 20px; }
.form-label  {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 8px;
}
.form-control {
  width: 100%;
  background: var(--bg-3);
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text-1);
  transition: border-color var(--t);
  outline: none;
}
.form-control::placeholder { color: var(--text-4); }
.form-control:focus { border-color: var(--accent); }
textarea.form-control { resize: vertical; min-height: 130px; }

.form-footer { margin-top: 8px; }

.form-notice {
  padding: 14px 18px;
  border-radius: var(--r);
  font-size: 0.9375rem;
  font-weight: 500;
  margin-top: 16px;
}
.form-notice.success {
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.2);
  color: #4ade80;
}
.form-notice.error {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.2);
  color: #f87171;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-0);
  border-top: 1px solid var(--border);
  padding-block: 64px 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.footer-logo {
  height: 30px;
  width: auto;
  margin-bottom: 16px;
}
.footer-logo-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--text-1);
  margin-bottom: 16px;
}
.footer-tagline {
  font-size: 0.875rem;
  color: var(--text-4);
  line-height: 1.7;
  max-width: 280px;
}
.footer-col-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-4);
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a,
.footer-links li {
  font-size: 0.9375rem;
  color: var(--text-3);
  transition: color var(--t);
}
.footer-links a:hover { color: var(--text-1); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p { font-size: 0.8125rem; color: var(--text-4); }

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].revealed { opacity: 1; transform: translateY(0); }
[data-reveal][data-delay="1"] { transition-delay: 0.1s; }
[data-reveal][data-delay="2"] { transition-delay: 0.2s; }
[data-reveal][data-delay="3"] { transition-delay: 0.3s; }
[data-reveal][data-delay="4"] { transition-delay: 0.4s; }

/* ============================================================
   UTILITIES
   ============================================================ */
.text-center { text-align: center; }
.text-accent { color: var(--accent); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: var(--gutter);
    right: var(--gutter);
    background: var(--bg-3);
    border: 1px solid var(--border-2);
    border-radius: var(--r-lg);
    padding: 12px;
    flex-direction: column;
    align-items: stretch;
    box-shadow: var(--shadow-lg);
  }
  .nav-menu.open         { display: flex; }
  .nav-link              { justify-content: space-between; }
  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    pointer-events: all;
    transform: none;
    background: rgba(255,255,255,0.03);
    border: none;
    border-radius: var(--r);
    box-shadow: none;
    display: none;
    margin-top: 4px;
    padding: 4px;
  }
  .nav-item.open .nav-dropdown { display: block; }
  .nav-menu .btn { text-align: center; justify-content: center; margin-top: 4px; }

  .contact-layout          { grid-template-columns: 1fr; }
  .contact-info-block      { position: static; }
  .form-row                { grid-template-columns: 1fr; gap: 0; }
  .hero-ctas               { flex-direction: column; align-items: flex-start; }
  .footer-grid             { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .steps-grid  { grid-template-columns: 1fr 1fr; }
  .cards-grid  { grid-template-columns: 1fr; }
}

@media (max-width: 440px) {
  .steps-grid { grid-template-columns: 1fr; }
}