/* ====================================================================
   Lynex IT Destek — Main Stylesheet
   Modern, responsive, premium corporate IT service design
   ==================================================================== */

/* ── Variables ─────────────────────────────────────────────────────── */
:root {
  --primary:       #2563eb;
  --primary-dark:  #2563eb;
  --primary-glow:  rgba(37,99,235,.14);
  --accent:        #2563eb;
  --accent-dark:   #2563eb;
  --success:       #22c55e;
  --warning:       #f59e0b;
  --danger:        #ef4444;

  --bg:            #020617;
  --bg-card:       #1e293b;
  --bg-section:    #08111f;
  --bg-alt:        #020617;
  --border:        rgba(148,163,184,.18);
  --border-hover:  rgba(37,99,235,.36);

  --text:          #e5e7eb;
  --text-muted:    #94a3b8;
  --text-faint:    #64748b;

  --font:          'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm:     8px;
  --radius:        14px;
  --radius-lg:     22px;
  --radius-full:   9999px;

  --shadow-glow:   0 0 0 rgba(37,99,235,0);
  --shadow-card:   0 14px 34px rgba(2,6,23,.24);
  --shadow-hover:  0 18px 38px rgba(2,6,23,.28);

  --nav-h:         70px;
  --transition:    .25s cubic-bezier(.4,0,.2,1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a  { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary); }

/* ── Typography ────────────────────────────────────────────────────── */
h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -.025em;
}

.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-glow);
  padding: .3rem .85rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(37,99,235,.24);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  color: var(--text);
  margin-bottom: .75rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 3rem;
}

/* ── Layout ────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section { padding: 6rem 0; }
section:nth-child(odd) { background: var(--bg-section); }
section:nth-child(even) { background: var(--bg-alt); }

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

/* ── Navbar ────────────────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 900;
  display: flex;
  align-items: center;
  background: rgba(2,6,23,.88);
  backdrop-filter: blur(16px) saturate(1.15);
  -webkit-backdrop-filter: blur(16px) saturate(1.15);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), box-shadow var(--transition);
}

#navbar.scrolled {
  background: rgba(2,6,23,.96);
  box-shadow: 0 12px 28px rgba(2,6,23,.32);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo-box {
  display: block;
  height: calc(var(--nav-h) - 18px);
  aspect-ratio: 1466 / 416;
  overflow: hidden;
}

.nav-logo-image {
  display: block !important;
  width: 100% !important;
  height: 100% !important;
  max-width: 100% !important;
  max-height: 100% !important;
  object-fit: cover;
  object-position: center 46%;
  transform: scale(1.3);
  transform-origin: center;
}

.nav-links {
  display: flex;
  align-items: center;
  margin-left: auto;
  gap: .25rem;
  list-style: none;
}

.nav-links a {
  padding: .45rem .85rem;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(37,99,235,.09);
}

.nav-cta {
  background: var(--primary) !important;
  color: #fff !important;
  border-radius: var(--radius-full) !important;
  padding: .45rem 1.1rem !important;
  font-weight: 600 !important;
  box-shadow: 0 10px 20px rgba(2,6,23,.24);
  transition: transform var(--transition), filter var(--transition), box-shadow var(--transition) !important;
}
.nav-cta:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
  box-shadow: 0 14px 24px rgba(2,6,23,.3);
}

/* Hamburger */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid rgba(96,165,250,.42);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(37,99,235,.98), rgba(29,78,216,.92));
  box-shadow: 0 10px 20px rgba(37,99,235,.18), inset 0 1px 0 rgba(255,255,255,.12);
  appearance: none;
  -webkit-appearance: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}
.nav-toggle:hover,
.nav-toggle:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(147,197,253,.72);
  box-shadow: 0 14px 24px rgba(37,99,235,.24), 0 0 0 4px rgba(37,99,235,.12);
}
.nav-toggle:focus-visible {
  outline: none;
}
.nav-toggle.open {
  background: linear-gradient(135deg, rgba(29,78,216,1), rgba(30,64,175,.94));
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 17px;
  background: #eff6ff;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition), background var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 768px) {
  .nav-logo-box {
    height: 38px;
  }
  .nav-toggle {
    display: inline-flex;
    flex-shrink: 0;
  }
  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(2,6,23,.98);
    padding: 1rem 1.25rem 1.4rem;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 18px 30px rgba(2,6,23,.32);
    gap: .35rem;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 42px;
    padding: .55rem .7rem;
    line-height: 1.35;
  }
  .nav-links .nav-cta {
    margin-top: .25rem;
    justify-content: center;
  }
}

/* ── Hero ──────────────────────────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--nav-h) 0 0;
  overflow: hidden;
  background: var(--bg);
}

/* Future: replace with background-image/video overlay */
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 60% 40%, rgba(37,99,235,.08) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 20% 70%, rgba(37,99,235,.05) 0%, transparent 60%),
    var(--bg);
  z-index: 0;
}

.hero-bg-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: .76;
  filter: saturate(1.06) brightness(.88);
  pointer-events: none;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(2,6,23,.56) 0%, rgba(2,6,23,.26) 45%, rgba(2,6,23,.52) 100%),
    linear-gradient(180deg, rgba(2,6,23,.08) 0%, rgba(2,6,23,.26) 100%);
  z-index: 1;
}

.hero-bg-video::-webkit-media-controls {
  display: none !important;
}

.hero-bg-video::-webkit-media-controls-start-playback-button {
  display: none !important;
  -webkit-appearance: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(37,99,235,.08);
  border: 1px solid rgba(37,99,235,.2);
  padding: .35rem .9rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
  animation: fadeInUp .6s ease both;
}

.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(1.4); }
}

.hero-title {
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  animation: fadeInUp .7s .1s ease both;
}

.hero-title span {
  color: var(--primary);
  background: none;
  -webkit-text-fill-color: currentColor;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2.25rem;
  max-width: 560px;
  animation: fadeInUp .7s .2s ease both;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp .7s .3s ease both;
}

/* ── Buttons ───────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius-full);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: .01em;
}

.btn-icon {
  width: 1.05rem;
  height: 1.05rem;
}

.btn-icon--end {
  margin-left: .1rem;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 22px rgba(2,6,23,.22);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(2,6,23,.28);
  filter: brightness(1.04);
  color: #fff;
}

.btn-outline {
  background: rgba(30,41,59,.36);
  color: var(--text);
  border: 1px solid rgba(148,163,184,.22);
}
.btn-outline:hover {
  background: rgba(37,99,235,.08);
  border-color: rgba(37,99,235,.32);
  color: var(--text);
  transform: translateY(-2px);
}

.btn-sm {
  padding: .5rem 1.1rem;
  font-size: .85rem;
}

/* ── About ─────────────────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-visual {
  /* Future: replace with an image or illustration */
  border-radius: var(--radius-lg);
  background: rgba(30,41,59,.72);
  border: 1px solid var(--border);
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.about-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 50% 50%, rgba(37,99,235,.08) 0%, transparent 72%);
}

.about-visual-icon {
  position: relative;
  z-index: 1;
}

.about-visual-icon .ui-icon {
  width: 4.25rem;
  height: 4.25rem;
  color: var(--primary);
}

.about-visual-label {
  font-size: .85rem;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
  font-style: normal;
}

.about-text h2 { margin-bottom: 1rem; }
.about-text p  { color: var(--text-muted); margin-bottom: 1rem; }

.about-features {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  margin-top: 1.5rem;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .9rem;
  color: var(--text-muted);
}

.about-feature-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(37,99,235,.12);
  border: 1px solid rgba(37,99,235,.2);
  color: var(--primary);
  flex-shrink: 0;
}

.about-feature-icon .ui-icon {
  width: .95rem;
  height: .95rem;
}

@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-visual { min-height: 200px; }
}

/* ── Services ──────────────────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}

.service-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  background: var(--primary-glow);
  border: 1px solid rgba(37,99,235,.22);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--primary);
}

.service-icon .ui-icon {
  width: 1.4rem;
  height: 1.4rem;
}

.service-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: .5rem;
  color: var(--text);
}

.service-desc {
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Why Us ────────────────────────────────────────────────────────── */
.whyus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}

.whyus-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.whyus-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.whyus-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: rgba(37,99,235,.1);
  border: 1px solid rgba(37,99,235,.2);
  color: var(--primary);
}

.whyus-icon .ui-icon {
  width: 1.8rem;
  height: 1.8rem;
}

.whyus-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: .5rem;
}

.whyus-desc {
  font-size: .875rem;
  color: var(--text-muted);
}

/* ── Form ──────────────────────────────────────────────────────────── */
.form-wrap {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.75rem;
  box-shadow: var(--shadow-card);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .form-wrap { padding: 1.75rem 1.25rem; }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-bottom: 1.25rem;
}

.form-group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-group .required { color: var(--danger); margin-left: .2rem; }

.form-control {
  background: rgba(2,6,23,.7);
  border: 1px solid rgba(148,163,184,.22);
  border-radius: var(--radius-sm);
  padding: .7rem 1rem;
  color: var(--text);
  font-size: .925rem;
  font-family: var(--font);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.16);
}

.form-control::placeholder { color: var(--text-faint); }

select.form-control { cursor: pointer; }

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

.form-check {
  display: flex;
  align-items: flex-start;
  gap: .65rem;
  margin: 1rem 0;
}

.form-check input[type=checkbox] {
  width: 16px; height: 16px;
  margin-top: .2rem;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}

.form-check label {
  font-size: .875rem;
  color: var(--text-muted);
  cursor: pointer;
}

.form-submit {
  width: 100%;
  padding: .9rem;
  font-size: 1rem;
  border-radius: var(--radius-sm);
}

/* Alert boxes */
.alert {
  padding: .9rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: .6rem;
}
.alert--success { background: rgba(34,197,94,.1);  border-left: 3px solid var(--success); color: #86efac; }
.alert--error   { background: rgba(239,68,68,.1);  border-left: 3px solid var(--danger);  color: #fca5a5; }
.alert--warning { background: rgba(245,158,11,.1); border-left: 3px solid var(--warning); color: #fcd34d; }
.alert--info    { background: rgba(37,99,235,.1); border-left: 3px solid var(--primary); color: #bfdbfe; }

/* ── Contact ───────────────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

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

.contact-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 1rem;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(37,99,235,.1);
  border: 1px solid rgba(37,99,235,.2);
  color: var(--primary);
}

.contact-icon .ui-icon {
  width: 1.5rem;
  height: 1.5rem;
}
.contact-label { font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--primary); }
.contact-value { font-size: 1rem; color: var(--text); font-weight: 600; }
.contact-sub   { font-size: .85rem; color: var(--text-muted); }

/* ── Footer ────────────────────────────────────────────────────────── */
#footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  text-align: center;
}

.footer-logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: .75rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin: 1rem 0;
  list-style: none;
}

.footer-links a {
  font-size: .85rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.footer-contact-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .85rem;
  flex-wrap: wrap;
  margin-bottom: .5rem;
}

.footer-contact-link {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--text-muted);
}

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

.footer-contact-icon {
  color: var(--primary);
}

.footer-contact-separator {
  color: var(--text-faint);
}

.footer-copy {
  font-size: .8rem;
  color: var(--text-faint);
}

/* ── Animations ────────────────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

.animate-fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Back to top */
#back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  box-shadow: 0 12px 22px rgba(2,6,23,.26);
  z-index: 500;
}
#back-to-top.visible { opacity: 1; pointer-events: all; }
#back-to-top:hover {
  transform: translateY(-3px);
  filter: brightness(1.05);
}