/* =========================
   Design Tokens / Variables
   ========================= */
:root {
  --color-primary: #0066cc;
  --color-primary-dark: #0052a3;
  --color-warning: #ffb300;
  --color-warning-dark: #ff9800;
  --color-foreground: #2d2d2d;
  --color-muted: #6b7280;
  --color-background: #ffffff;
  --color-border: #e5e7eb;
  --color-soft-blue: #eff6ff;
  --color-soft-orange: #fff7ed;
  --color-soft-green: #f0fdf4;
  --color-soft-red: #fef2f2;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
  --font-main: "Inter", Arial, sans-serif;
  --container: 1280px;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --transition: 220ms ease;
}

/* =========================
   Reset / Base Styles
   ========================= */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-main);
  color: var(--color-foreground);
  background: var(--color-background);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; border: 0; background: none; }
.container { width: min(100% - 2rem, var(--container)); margin-inline: auto; }
.section { padding: 5rem 0; }
.center { text-align: center; }
.mt-lg { margin-top: 2.5rem; }

/* =========================
   Header / Navigation
   ========================= */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.navbar { height: 5rem; display: flex; align-items: center; justify-content: space-between; }
.brand-logo { height: 4rem; width: auto; object-fit: contain; }
.nav-menu { display: flex; align-items: center; gap: 1.5rem; }
.nav-link { font-size: 0.875rem; color: var(--color-foreground); transition: color var(--transition); }
.nav-link:hover, .nav-link.active { color: var(--color-primary); }
.mobile-toggle { display: none; width: 2.5rem; height: 2.5rem; align-items: center; justify-content: center; }
.hamburger, .hamburger::before, .hamburger::after {
  display: block; width: 1.5rem; height: 2px; background: var(--color-foreground); border-radius: 99px; transition: var(--transition);
}
.hamburger { position: relative; }
.hamburger::before, .hamburger::after { content: ""; position: absolute; left: 0; }
.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }
.mobile-toggle.is-open .hamburger { background: transparent; }
.mobile-toggle.is-open .hamburger::before { top: 0; transform: rotate(45deg); }
.mobile-toggle.is-open .hamburger::after { top: 0; transform: rotate(-45deg); }

/* =========================
   Buttons / Reusable UI
   ========================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 3rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-small { min-height: 2.25rem; padding: 0.45rem 1rem; font-size: 0.875rem; }
.btn-full { width: 100%; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-warning { background: var(--color-warning); color: var(--color-foreground); }
.btn-warning:hover { background: var(--color-warning-dark); }
.btn-outline-warning { border: 1px solid var(--color-warning); color: var(--color-foreground); background: transparent; }
.btn-outline-warning:hover { border-color: var(--color-warning-dark); background: rgba(255, 179, 0, 0.1); }
.btn-outline-primary { border: 1px solid var(--color-primary); color: var(--color-primary); background: transparent; }
.btn-outline-primary:hover { border-color: var(--color-primary-dark); background: rgba(0, 102, 204, 0.05); }
.card-hover { transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); }
.card-hover:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.icon { font-weight: 800; }
.icon.primary { color: var(--color-primary); }
.icon.warning { color: var(--color-warning); }
.icon-box {
  width: 3rem; height: 3rem; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; font-weight: 700; flex-shrink: 0;
}
.primary-soft { color: var(--color-primary); background: rgba(0, 102, 204, 0.1); }
.warning-soft { color: var(--color-warning); background: rgba(255, 179, 0, 0.1); }

/* =========================
   Hero Section
   ========================= */
.hero-section { padding-top: 7.5rem; background: linear-gradient(135deg, #eff6ff 0%, #fff7ed 52%, #ffffff 100%); }
.hero-content { text-align: center; max-width: 1120px; margin-inline: auto; }
h1 { font-size: clamp(2.35rem, 5vw, 4rem); line-height: 1.15; margin: 0 0 1.5rem; font-weight: 800; }
h2 { font-size: clamp(2rem, 4vw, 2.5rem); line-height: 1.2; margin: 0 0 1rem; font-weight: 800; }
h3 { line-height: 1.25; margin: 0; }
.lead, .section-heading p { color: var(--color-muted); font-size: 1.125rem; max-width: 900px; margin: 0 auto; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin: 2rem 0 2.5rem; }
.trust-badges { border-top: 1px solid var(--color-border); padding-top: 1.5rem; display: flex; flex-wrap: wrap; justify-content: center; gap: 1.5rem; max-width: 900px; margin-inline: auto; }
.badge-item { display: flex; align-items: center; gap: 0.5rem; color: var(--color-muted); font-size: 0.875rem; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; margin-top: 3rem; }
.stat-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: 2rem; text-align: center; }
.stat-card .icon-box { width: 3.5rem; height: 3.5rem; margin: 0 auto 1rem; font-size: 1.8rem; }
.stat-card h3 { font-size: 2rem; margin-bottom: 0.5rem; }
.check-heading { color: var(--color-warning); }
.stat-title { font-size: 0.875rem; font-weight: 600; margin: 0; color: var(--color-muted); }
.small-text { font-size: 0.75rem; color: var(--color-muted); margin: 0.5rem 0 0; }

/* =========================
   Section Layouts / Cards
   ========================= */
.section-heading { text-align: center; max-width: 900px; margin: 0 auto 3rem; }
.services-section, .portfolio-section { background: linear-gradient(135deg, rgba(239,246,255,.55), #ffffff); }
.ai-section { background: linear-gradient(135deg, #fff7ed, #eff6ff); }
.ayu-section { background: linear-gradient(135deg, #ffffff, rgba(240,253,244,.45)); }
.recognition-section { background: linear-gradient(135deg, #fff7ed, #ffffff); }
.why-section { background: linear-gradient(135deg, rgba(239,246,255,.35), #ffffff); }
.contact-section { background: linear-gradient(135deg, #fff7ed, #eff6ff, #ffffff); }
.card-grid { display: grid; gap: 1.5rem; }
.three-col { grid-template-columns: repeat(3, 1fr); }
.four-col { grid-template-columns: repeat(4, 1fr); }
.service-card, .content-card, .why-card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: 1.5rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card { cursor: pointer; }
.service-card:hover, .content-card:hover, .why-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.gradient-icon {
  width: 3rem; height: 3rem; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-warning)); color: #fff; font-size: 1.4rem; margin-bottom: 1rem; transition: transform var(--transition);
}
.ai-section .gradient-icon { background: linear-gradient(135deg, var(--color-warning), var(--color-primary)); }
.service-card:hover .gradient-icon, .content-card:hover .gradient-icon, .why-card:hover .icon-box { transform: scale(1.1); }
.card-title { margin-bottom: 0.5rem; font-weight: 700; }
.card-desc { color: var(--color-muted); font-size: 0.875rem; margin: 0; }
.learn-more { display: flex; align-items: center; gap: .25rem; color: var(--color-primary); font-size: .875rem; font-weight: 600; margin-top: 0.9rem; }
.pill { display: inline-flex; align-items: center; gap: .5rem; padding: .45rem 1rem; border-radius: 99px; background: rgba(0, 102, 204, .1); color: var(--color-primary); font-size: .875rem; font-weight: 600; margin-bottom: 1rem; }
.pill-warning { background: rgba(255, 179, 0, .1); color: var(--color-foreground); }

/* =========================
   Ayu360 Problem / Solution
   ========================= */
.split-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; margin-bottom: 3rem; }
.info-box { padding: 2rem; border-radius: var(--radius-xl); border: 1px solid; }
.problem-box { background: var(--color-soft-red); border-color: #fecaca; }
.solution-box { background: var(--color-soft-green); border-color: #bbf7d0; }
.info-box h3 { font-size: 1.25rem; margin-bottom: 1rem; }
.info-box p, .check-list { color: var(--color-muted); font-size: .875rem; }
.check-list { list-style: none; padding: 0; margin: 1rem 0 0; display: grid; gap: .6rem; }
.check-list li { position: relative; padding-left: 1.8rem; }
.check-list li::before { position: absolute; left: 0; top: 0; font-weight: 800; }
.check-list.negative li::before { content: "×"; color: #ef4444; }
.check-list.positive li::before { content: "✓"; color: #16a34a; }
.ayu-card { background: linear-gradient(135deg, #f0fdf4, #ffffff); }
.ayu-card .icon-box { margin-bottom: 1rem; }

/* =========================
   Recognition / Portfolio
   ========================= */
.recognition-card { background: #fff; border: 2px solid; border-radius: var(--radius-xl); padding: 2rem; text-align: center; transition: var(--transition); }
.recognition-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.recognition-card.orange { border-color: #fed7aa; }
.recognition-card.blue { border-color: #bfdbfe; }
.recognition-card.green { border-color: #bbf7d0; }
.round-icon { width: 4rem; height: 4rem; border-radius: 50%; display: grid; place-items: center; margin: 0 auto 1rem; font-size: 1.7rem; font-weight: 800; }
.orange .round-icon { background: #ffedd5; color: #ea580c; }
.blue .round-icon { background: #dbeafe; color: #2563eb; }
.green .round-icon { background: #dcfce7; color: #16a34a; }
.recognition-card p { color: var(--color-muted); font-size: .875rem; margin-bottom: 0; }
.portfolio-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.portfolio-item { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.5rem; text-align: center; font-weight: 600; font-size: .875rem; transition: var(--transition); }
.portfolio-item:hover { border-color: var(--color-primary); color: var(--color-primary); box-shadow: var(--shadow-md); transform: translateY(-4px); }

/* =========================
   Contact Section
   ========================= */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
.contact-info { display: grid; gap: 1.5rem; }
.contact-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: 1.5rem; display: flex; gap: 1rem; align-items: flex-start; }
.contact-card h3 { margin-bottom: .25rem; }
.contact-card a { color: var(--color-muted); font-size: .875rem; transition: color var(--transition); }
.contact-card a:hover { color: var(--color-primary); }
.contact-form { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-xl); box-shadow: var(--shadow-md); padding: 2rem; }
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: .875rem; font-weight: 600; margin-bottom: .5rem; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: #fff; padding: .85rem 1rem; outline: none; transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--color-primary); box-shadow: 0 0 0 4px rgba(0, 102, 204, .12); }
.form-note { min-height: 1.25rem; color: var(--color-primary); font-size: .875rem; margin: 1rem 0 0; }

/* =========================
   Footer
   ========================= */
.site-footer { background: var(--color-foreground); color: #fff; padding: 2rem 0; text-align: center; }
.footer-logo-wrap { background: #fff; display: inline-flex; border-radius: var(--radius-md); padding: .5rem 1rem; margin-bottom: 1rem; }
.footer-logo-wrap img { height: 2.5rem; width: auto; object-fit: contain; }
.site-footer p { color: #9ca3af; margin: 0; font-size: .875rem; }

/* =========================
   Service Modal
   ========================= */
.modal-backdrop { position: fixed; inset: 0; z-index: 2000; display: none; align-items: center; justify-content: center; padding: 1rem; background: rgba(0,0,0,.5); backdrop-filter: blur(4px); }
.modal-backdrop.is-open { display: flex; }
.service-modal { width: min(100%, 760px); max-height: 90vh; overflow: auto; background: #fff; border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); animation: modalIn .2s ease; }
@keyframes modalIn { from { opacity: 0; transform: translateY(12px) scale(.98); } to { opacity: 1; transform: none; } }
.modal-header { position: sticky; top: 0; background: #fff; border-bottom: 1px solid var(--color-border); padding: 1.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.modal-header h2 { font-size: 1.5rem; margin: 0; }
.modal-close { width: 2rem; height: 2rem; border-radius: 999px; display: grid; place-items: center; font-size: 1.5rem; color: var(--color-foreground); transition: var(--transition); }
.modal-close:hover { background: #f3f4f6; }
.modal-body { padding: 1.5rem; }
.modal-description { color: var(--color-muted); margin-top: 0; }
.modal-block { margin-top: 1.5rem; }
.feature-list { display: grid; gap: .75rem; margin-top: 1rem; }
.feature-list div { background: rgba(243,244,246,.65); border-radius: var(--radius-md); padding: .75rem; display: flex; gap: .75rem; font-size: .875rem; }
.feature-list div::before { content: "✓"; color: var(--color-primary); font-weight: 800; }
.tech-list { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .75rem; }
.tech-list span { padding: .35rem .75rem; border-radius: 999px; background: rgba(0,102,204,.1); color: var(--color-primary); font-size: .875rem; font-weight: 600; }
.modal-actions { padding-top: 1.5rem; border-top: 1px solid var(--color-border); margin-top: 1.5rem; }
body.modal-open { overflow: hidden; }

/* =========================
   Scroll Reveal Interaction
   ========================= */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* =========================
   Responsive Styles
   ========================= */
@media (max-width: 1024px) {
  .stats-grid, .four-col, .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .three-col { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 4rem 0; }
  .mobile-toggle { display: inline-flex; }
  .nav-menu {
    position: absolute; top: 5rem; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: .25rem;
    background: #fff; border-bottom: 1px solid var(--color-border); padding: 1rem; box-shadow: var(--shadow-sm);
  }
  .nav-menu.is-open { display: flex; }
  .nav-link { padding: .65rem 1rem; border-radius: .5rem; }
  .nav-link:hover { background: #f3f4f6; }
  .nav-menu .btn { margin-top: .5rem; }
  .brand-logo { height: 3.5rem; }
  .hero-section { padding-top: 6.5rem; }
  .stats-grid, .three-col, .four-col, .split-grid, .contact-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; gap: 0; }
}
@media (max-width: 480px) {
  .container { width: min(100% - 1.25rem, var(--container)); }
  .btn { width: 100%; padding-inline: 1rem; }
  .hero-actions { flex-direction: column; }
  .trust-badges { gap: .9rem; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .stat-card, .service-card, .content-card, .why-card, .contact-form, .info-box { padding: 1.25rem; }
}