/**
 * BerceSoft Otel — ürün tanıtım landing
 */
:root {
  --ot-brand: #1850b1;
  --ot-deep: #0a369b;
  --ot-navy: #041433;
  --ot-ink: #0f172a;
  --ot-muted: #64748b;
  --ot-line: #dbe4f0;
  --ot-bg: #eef3f9;
  --ot-surface: #ffffff;
  --ot-font: "Poppins", "Segoe UI", sans-serif;
  --ot-body: "Poppins", "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.ot-landing {
  margin: 0;
  font-family: var(--ot-body);
  background: var(--ot-bg);
  color: var(--ot-ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

/* —— Header —— */
.otl-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  transition: background .25s, box-shadow .25s, backdrop-filter .25s;
}
.otl-header.is-solid {
  background: rgba(4, 20, 51, .92);
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 32px rgba(4, 20, 51, .25);
}
.otl-header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: .85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.otl-logo {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  text-decoration: none;
  color: #fff;
  font-family: var(--ot-font);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -.02em;
}
.otl-logo span {
  width: 36px; height: 36px;
  border-radius: 11px;
  background: linear-gradient(135deg, #1850b1, #3b82f6);
  display: grid; place-items: center;
  font-size: .95rem;
  box-shadow: 0 6px 18px rgba(24, 80, 177, .45);
}
.otl-nav {
  display: flex;
  align-items: center;
  gap: .35rem 1.15rem;
}
.otl-nav a {
  color: rgba(255,255,255,.78);
  text-decoration: none;
  font-size: .86rem;
  font-weight: 600;
  transition: color .15s;
}
.otl-nav a:hover { color: #fff; }
.otl-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  min-height: 40px;
  padding: 0 1rem;
  border-radius: 11px;
  background: #fff;
  color: var(--ot-brand) !important;
  font-weight: 750 !important;
  font-size: .84rem !important;
}
.otl-nav-cta:hover { background: #eaf2ff !important; }
.otl-burger {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 11px;
  background: rgba(255,255,255,.08);
  color: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* —— Hero —— */
.otl-hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  color: #fff;
  overflow: hidden;
}
.otl-hero-media {
  position: absolute;
  inset: 0;
  background:
    url("https://images.unsplash.com/photo-1566073771259-6a8506099945?auto=format&fit=crop&w=1920&q=80") center/cover no-repeat;
  transform: scale(1.04);
  animation: otlKen 18s ease-in-out infinite alternate;
}
@keyframes otlKen {
  from { transform: scale(1.04) translateY(0); }
  to { transform: scale(1.1) translateY(-1.5%); }
}
.otl-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(4,20,51,.88) 0%, rgba(4,20,51,.45) 48%, rgba(10,54,155,.35) 100%),
    linear-gradient(180deg, rgba(4,20,51,.35) 0%, transparent 35%, rgba(4,20,51,.75) 100%);
}
.otl-hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 7.5rem 1.25rem 4.5rem;
}
.otl-brand-mark {
  font-family: var(--ot-font);
  font-size: clamp(1.7rem, 4.2vw, 2.65rem);
  font-weight: 800;
  letter-spacing: -.04em;
  margin: 0 0 .85rem;
  line-height: 1.05;
}
.otl-brand-mark em {
  font-style: normal;
  color: #93c5fd;
}
.otl-hero h1 {
  margin: 0 0 1rem;
  max-width: 16ch;
  font-family: var(--ot-font);
  font-size: clamp(1.55rem, 3.6vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.15;
}
.otl-hero-lead {
  margin: 0 0 1.75rem;
  max-width: 36rem;
  font-size: clamp(.95rem, 1.6vw, 1.08rem);
  opacity: .9;
  line-height: 1.6;
  font-weight: 500;
}
.otl-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}
.otl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  min-height: 48px;
  padding: .75rem 1.35rem;
  border-radius: 13px;
  font-family: inherit;
  font-weight: 700;
  font-size: .9rem;
  text-decoration: none;
  border: 0;
  cursor: pointer;
  transition: transform .18s, background .18s, box-shadow .18s;
}
.otl-btn:hover { transform: translateY(-2px); text-decoration: none; }
.otl-btn-light {
  background: #fff;
  color: var(--ot-brand);
  box-shadow: 0 12px 36px rgba(0,0,0,.22);
}
.otl-btn-ghost {
  background: rgba(255,255,255,.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,.32);
  backdrop-filter: blur(8px);
}
.otl-btn-brand {
  background: var(--ot-brand);
  color: #fff;
}
.otl-btn-brand:hover { background: var(--ot-deep); color: #fff; }

/* —— Sections —— */
.otl-wrap { max-width: 1120px; margin: 0 auto; padding: 0 1.25rem; }
.otl-section { padding: 4.75rem 0; }
.otl-label {
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ot-brand);
  margin: 0 0 .55rem;
}
.otl-section h2 {
  margin: 0 0 .65rem;
  font-family: var(--ot-font);
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.15;
}
.otl-sub {
  margin: 0 0 2.4rem;
  color: var(--ot-muted);
  font-size: .98rem;
  max-width: 34rem;
  line-height: 1.55;
}
.otl-center { text-align: center; }
.otl-center .otl-sub { margin-left: auto; margin-right: auto; }

.otl-feat-grid {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.otl-feat {
  padding: 1.35rem 0 0;
  border-top: 2px solid var(--ot-line);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .55s ease, transform .55s ease;
}
.otl-feat.is-in {
  opacity: 1;
  transform: none;
}
.otl-feat i {
  color: var(--ot-brand);
  font-size: 1.15rem;
  margin-bottom: .75rem;
  display: block;
}
.otl-feat h3 {
  margin: 0 0 .4rem;
  font-family: var(--ot-font);
  font-size: 1.05rem;
  font-weight: 750;
  letter-spacing: -.015em;
}
.otl-feat p {
  margin: 0;
  color: var(--ot-muted);
  font-size: .9rem;
  line-height: 1.55;
}

.otl-split {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 2.5rem;
  align-items: center;
}
.otl-split-visual {
  border-radius: 0;
  min-height: 360px;
  background:
    linear-gradient(160deg, rgba(4,20,51,.55), rgba(24,80,177,.35)),
    url("https://images.unsplash.com/photo-1611892440504-42a792e24d32?auto=format&fit=crop&w=1200&q=80") center/cover;
  box-shadow: 0 24px 60px rgba(4, 20, 51, .18);
}

.otl-plans {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  text-align: left;
}
.otl-plan {
  background: var(--ot-surface);
  border: 1px solid var(--ot-line);
  border-radius: 20px;
  padding: 1.7rem 1.55rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
}
.otl-plan.is-featured {
  border-color: rgba(24,80,177,.4);
  box-shadow: 0 18px 50px rgba(24,80,177,.12);
}
.otl-plan-badge {
  position: absolute;
  top: 1.15rem; right: 1.15rem;
  background: var(--ot-brand);
  color: #fff;
  font-size: .65rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: .3rem .7rem;
  border-radius: 99px;
}
.otl-plan .tier {
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ot-muted);
}
.otl-plan h3 {
  margin: 0;
  font-family: var(--ot-font);
  font-size: 1.45rem;
  font-weight: 800;
}
.otl-price {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  flex-wrap: wrap;
}
.otl-price strong {
  font-family: var(--ot-font);
  font-size: 2.15rem;
  font-weight: 800;
  letter-spacing: -.04em;
}
.otl-price s { color: #94a3b8; font-weight: 650; }
.otl-price em { font-style: normal; color: var(--ot-muted); font-size: .82rem; font-weight: 600; }
.otl-plan ul {
  margin: 0; padding: 0; list-style: none;
  display: flex; flex-direction: column; gap: .5rem; flex: 1;
}
.otl-plan li {
  display: flex; gap: .55rem; align-items: flex-start;
  font-size: .88rem; color: #334155; line-height: 1.45;
}
.otl-plan li i { color: #059669; margin-top: .2rem; font-size: .72rem; }

.otl-faq { max-width: 720px; margin: 0 auto; text-align: left; }
.otl-faq details {
  background: var(--ot-surface);
  border: 1px solid var(--ot-line);
  border-radius: 14px;
  padding: 1rem 1.15rem;
  margin-bottom: .65rem;
}
.otl-faq summary {
  cursor: pointer;
  font-weight: 750;
  font-size: .92rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}
.otl-faq summary::-webkit-details-marker { display: none; }
.otl-faq summary::after {
  content: "+";
  color: var(--ot-brand);
  font-weight: 800;
  font-size: 1.1rem;
}
.otl-faq details[open] summary::after { content: "−"; }
.otl-faq p {
  margin: .65rem 0 0;
  color: var(--ot-muted);
  font-size: .88rem;
  line-height: 1.55;
}

.otl-band {
  background: linear-gradient(135deg, var(--ot-navy), var(--ot-deep) 55%, #1a62c4);
  color: #fff;
  padding: 3.5rem 0;
  text-align: center;
}
.otl-band h2 {
  margin: 0 0 .75rem;
  font-family: var(--ot-font);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 800;
}
.otl-band p {
  margin: 0 auto 1.5rem;
  max-width: 32rem;
  opacity: .85;
}

/* —— Footer —— */
.otl-footer {
  background: var(--ot-navy);
  color: rgba(255,255,255,.68);
  padding: 3rem 0 1.75rem;
  font-size: .84rem;
}
.otl-foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.otl-foot-brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  color: #fff;
  font-family: var(--ot-font);
  font-weight: 750;
  font-size: 1rem;
  margin-bottom: .75rem;
}
.otl-foot-brand span {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: rgba(255,255,255,.1);
  display: grid; place-items: center;
}
.otl-footer h4 {
  margin: 0 0 .85rem;
  color: #fff;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.otl-footer a {
  display: block;
  color: rgba(255,255,255,.65);
  text-decoration: none;
  margin-bottom: .45rem;
  font-weight: 550;
}
.otl-footer a:hover { color: #fff; }
.otl-foot-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 1.15rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: .78rem;
}

@media (max-width: 960px) {
  .otl-feat-grid { grid-template-columns: 1fr 1fr; }
  .otl-split { grid-template-columns: 1fr; }
  .otl-foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .otl-nav { display: none; }
  .otl-nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    left: 1rem; right: 1rem; top: calc(100% + .35rem);
    background: rgba(4,20,51,.96);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 16px;
    padding: 1rem;
    gap: .75rem;
  }
  .otl-burger { display: inline-flex; }
  .otl-feat-grid, .otl-plans { grid-template-columns: 1fr; }
  .otl-foot-grid { grid-template-columns: 1fr; gap: 1.35rem; }
  .otl-hero-inner { padding-bottom: 3.25rem; }
}