/* ============================================================
   AKORENA TEKNOLOGI INDONESIA — stylesheet
   Mobile-first, dark theme
   ============================================================ */

/* ---- Custom Properties ---- */
:root {
  --bg:        #0f172a;
  --bg-2:      #1e293b;
  --bg-3:      #0d1424;
  --accent:    #6366f1;
  --accent-2:  #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.25);
  --text:      #f1f5f9;
  --text-muted:#94a3b8;
  --border:    rgba(148, 163, 184, 0.12);
  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 22px;
  --shadow:    0 4px 32px rgba(0,0,0,0.45);
  --font:      'Inter', system-ui, -apple-system, sans-serif;
  --transition: 0.25s ease;
}

/* ---- Light theme overrides ---- */
[data-theme="light"] {
  --bg:        #f8fafc;
  --bg-2:      #ffffff;
  --bg-3:      #f1f5f9;
  --accent:    #4f46e5;
  --accent-2:  #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.18);
  --text:      #0f172a;
  --text-muted:#475569;
  --border:    rgba(15, 23, 42, 0.1);
  --shadow:    0 4px 32px rgba(0,0,0,0.1);
}
[data-theme="light"] .hero-bg {
  background:
    radial-gradient(ellipse 70% 60% at 50% -10%, rgba(99,102,241,.12) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 90% 80%, rgba(99,102,241,.06) 0%, transparent 60%);
}
[data-theme="light"] .nav-wrapper {
  background: rgba(248, 250, 252, 0.85);
}
[data-theme="light"] .service-card:hover,
[data-theme="light"] .value-card:hover {
  box-shadow: 0 12px 40px rgba(99,102,241,.1);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ---- Container ---- */
.container {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: .9375rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-2);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-ghost {
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-2);
}
.btn-full { width: 100%; }

/* ---- Section Common ---- */
.section { padding: 5rem 0; }
.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 1rem;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.02em;
  margin-bottom: 1.25rem;
}
.section-sub {
  color: var(--text-muted);
  font-size: 1.0625rem;
  max-width: 520px;
  margin-bottom: 3rem;
}
.centered { text-align: center; margin-inline: auto; }

.gradient-text {
  background: linear-gradient(135deg, var(--accent-2) 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================================
   NAV
   ============================================================ */
.nav-wrapper {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 700;
  font-size: 1.0625rem;
}
.logo-mark {
  width: 32px; height: 32px;
  background: var(--accent);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: .9rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.logo-text { color: var(--text); }

/* ---- Lang toggle ---- */
.nav-controls {
  display: flex;
  align-items: center;
  gap: .375rem;
}
.lang-btn {
  display: flex;
  align-items: center;
  gap: .25rem;
  padding: .3rem .5rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: none;
  cursor: pointer;
  transition: border-color var(--transition);
}
.lang-btn:hover { border-color: var(--accent); }
.lang-opt {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--text-muted);
  transition: color var(--transition);
  line-height: 1;
}
.lang-opt.active { color: var(--accent-2); }
.lang-sep {
  font-size: .625rem;
  color: var(--border);
  line-height: 1;
}

/* ---- Theme toggle ---- */
.theme-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: none;
  cursor: pointer;
  color: var(--text-muted);
  transition: border-color var(--transition), color var(--transition);
  flex-shrink: 0;
}
.theme-btn:hover { border-color: var(--accent); color: var(--accent-2); }
.theme-btn svg { display: block; }
.theme-btn .icon-sun  { display: none; }
.theme-btn .icon-moon { display: block; }
[data-theme="light"] .theme-btn .icon-sun  { display: block; }
[data-theme="light"] .theme-btn .icon-moon { display: none; }

/* Mobile nav toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: .5rem;
  z-index: 110;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.nav-links {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.25rem 1.5rem;
  transform: translateY(-120%);
  opacity: 0;
  transition: transform .3s ease, opacity .3s ease;
  pointer-events: none;
}
.nav-links.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.nav-link {
  display: block;
  padding: .75rem 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}
.nav-link:hover { color: var(--text); }
.nav-cta {
  margin-top: .75rem;
  border: none;
  background: var(--accent);
  color: #fff !important;
  padding: .65rem 1.25rem;
  border-radius: var(--radius-sm);
  text-align: center;
  font-weight: 600;
}
.nav-cta:hover { background: var(--accent-2); }

/* Desktop nav */
@media (min-width: 768px) {
  .nav-toggle { display: none; }
  .nav-links {
    position: static;
    flex-direction: row;
    align-items: center;
    gap: .25rem;
    background: none;
    border: none;
    padding: 0;
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }
  .nav-link {
    padding: .45rem .875rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: .9375rem;
  }
  .nav-link:hover { background: var(--bg-2); color: var(--text); }
  .nav-cta {
    margin-top: 0;
    padding: .5rem 1.125rem;
  }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% -10%, rgba(99,102,241,.22) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 90% 80%, rgba(99,102,241,.08) 0%, transparent 60%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding-top: 4rem;
  padding-bottom: 4rem;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(99,102,241,.15);
  border: 1px solid rgba(99,102,241,.3);
  color: var(--accent-2);
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .05em;
  padding: .35rem .875rem;
  border-radius: 999px;
  margin-bottom: 1.75rem;
}
.hero-title {
  font-size: clamp(2.25rem, 7vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.03em;
  margin-bottom: 1.25rem;
}
.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 2.25rem;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .875rem;
  margin-bottom: 3.5rem;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.stat { display: flex; flex-direction: column; gap: .2rem; }
.stat-num {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.02em;
}
.stat-label {
  font-size: .8125rem;
  color: var(--text-muted);
  font-weight: 500;
}
.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
  display: none;
}
@media (min-width: 480px) { .stat-divider { display: block; } }

/* ============================================================
   ABOUT
   ============================================================ */
.about { background: var(--bg-3); }
.about-grid {
  display: grid;
  gap: 3rem;
}
.about-text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 1.0625rem;
}
.about-cards {
  display: grid;
  gap: 1rem;
}
.value-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color var(--transition), transform var(--transition);
}
.value-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}
.value-icon {
  color: var(--accent);
  font-size: .75rem;
  margin-bottom: .875rem;
}
.value-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: .5rem;
}
.value-card p {
  font-size: .9375rem;
  color: var(--text-muted);
  line-height: 1.6;
}

@media (min-width: 900px) {
  .about-grid { grid-template-columns: 1fr 1fr; align-items: start; gap: 4rem; }
  .about-cards { grid-template-columns: 1fr; }
}

/* ============================================================
   SERVICES
   ============================================================ */
.services { background: var(--bg); }
.services-grid {
  display: grid;
  gap: 1.25rem;
}
.service-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(99,102,241,.12);
}
.service-icon {
  width: 52px; height: 52px;
  background: rgba(99,102,241,.12);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: var(--accent-2);
  margin-bottom: 1.125rem;
}
.service-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: .625rem;
}
.service-card > p {
  color: var(--text-muted);
  font-size: .9375rem;
  line-height: 1.65;
  margin-bottom: 1.125rem;
}
.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}
.service-tags li {
  font-size: .75rem;
  font-weight: 600;
  color: var(--accent-2);
  background: rgba(99,102,241,.1);
  border: 1px solid rgba(99,102,241,.2);
  padding: .25rem .625rem;
  border-radius: 999px;
}

@media (min-width: 640px)  { .services-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .services-grid { grid-template-columns: repeat(3, 1fr); } }

/* ============================================================
   CONTACT
   ============================================================ */
.contact { background: var(--bg-3); }
.contact-inner {
  display: grid;
  gap: 3rem;
}
.contact-text p {
  color: var(--text-muted);
  font-size: 1.0625rem;
  margin-bottom: 2rem;
}
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact-details li {
  display: flex;
  align-items: center;
  gap: .75rem;
  color: var(--text-muted);
  font-size: .9375rem;
}
.contact-details svg { color: var(--accent-2); flex-shrink: 0; }
.contact-details a { color: var(--accent-2); }
.contact-details a:hover { text-decoration: underline; }

/* Form */
.contact-form {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.form-group label {
  font-size: .875rem;
  font-weight: 600;
  color: var(--text);
}
.form-group input,
.form-group textarea {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: .9375rem;
  padding: .75rem 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-note {
  font-size: .875rem;
  text-align: center;
  color: var(--accent-2);
}

@media (min-width: 900px) {
  .contact-inner { grid-template-columns: 1fr 1fr; align-items: start; gap: 4rem; }
  .contact-form { padding: 2.5rem; }
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding-top: 3rem;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-bottom: 2rem;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: .9375rem;
  margin-top: .75rem;
  max-width: 280px;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.footer-links a {
  color: var(--text-muted);
  font-size: .9375rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--text); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}
.footer-bottom p {
  font-size: .8125rem;
  color: var(--text-muted);
}

@media (min-width: 640px) {
  .footer-inner { flex-direction: row; justify-content: space-between; align-items: flex-start; }
}

/* ============================================================
   Utility — scroll reveal
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}