/* =====================================================================
   ENPOL — Sayfa iskeleti (style.css): navigasyon, hero, bölümler, footer
   ===================================================================== */

/* --- 1. Navigasyon -------------------------------------------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  color: #EEF1F6;
  background: transparent;
  transition: background-color .35s var(--ease), color .35s var(--ease),
              box-shadow .35s var(--ease), border-color .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav .wrap { display: flex; align-items: center; gap: 24px; }
.nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  color: var(--fg);
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
}

.brand { display: inline-flex; align-items: center; gap: 12px; color: inherit; }
.brand:hover { color: inherit; }
.brand .mark { width: 40px; height: 40px; flex: none; color: var(--brand); }
.wordmark { display: flex; flex-direction: column; line-height: 1; }
.wordmark b {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  letter-spacing: .16em;
}
.wordmark small {
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  opacity: .62;
  margin-top: 4px;
  white-space: nowrap;
}

.navlinks {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin-left: auto;
  padding: 0;
}
.navlinks a {
  display: inline-block;
  padding: 10px 14px;
  font-size: 14.5px;
  font-weight: 500;
  border-radius: var(--radius-pill);
  opacity: .86;
  transition: opacity .2s, background-color .2s, color .2s;
}
.navlinks a:hover { opacity: 1; color: inherit; background: color-mix(in srgb, currentColor 9%, transparent); }
.navlinks a[aria-current="page"] { opacity: 1; font-weight: 600; color: var(--accent); }

.nav-tools { display: flex; align-items: center; gap: 10px; margin-left: 8px; }

.theme-toggle {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, currentColor 26%, transparent);
  color: inherit;
  transition: background-color .2s, border-color .2s, transform .2s;
}
.theme-toggle:hover { background: color-mix(in srgb, currentColor 10%, transparent); transform: rotate(-8deg); }
.theme-toggle svg { width: 19px; height: 19px; }
.theme-toggle .ico-moon { display: none; }
[data-theme="dark"] .theme-toggle .ico-sun { display: none; }
[data-theme="dark"] .theme-toggle .ico-moon { display: block; }

.nav-toggle {
  display: none;
  width: 44px; height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border: 1px solid color-mix(in srgb, currentColor 26%, transparent);
  border-radius: var(--radius-sm);
  color: inherit;
}
.nav-toggle span { width: 20px; height: 2px; background: currentColor; transition: transform .3s var(--ease), opacity .3s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1024px) {
  .nav-toggle { display: flex; }
  .navlinks {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin: 0;
    padding: 18px var(--gutter) 26px;
    background: var(--bg);
    color: var(--fg);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s var(--ease), transform .25s var(--ease);
  }
  .navlinks.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .navlinks a { padding: 14px 16px; font-size: 17px; }
  .nav-cta { display: none; }
}

/* --- 2. Ekran okuyucu / odak ---------------------------------------- */
:target { scroll-margin-top: calc(var(--nav-h) + 20px); }
section[id], div[id] { scroll-margin-top: calc(var(--nav-h) + 20px); }

/* --- 3. Hero (ana sayfa) -------------------------------------------- */
.hero {
  position: relative;
  min-height: min(94vh, 900px);
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 60px) 0 clamp(60px, 8vw, 110px);
  color: #EEF1F6;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(90% 80% at 78% 18%, rgba(30, 61, 114, .7), transparent 62%),
    linear-gradient(155deg, #0A1322 0%, #10233F 52%, #0A1322 100%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(238, 241, 246, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(238, 241, 246, .05) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(80% 70% at 60% 40%, #000 20%, transparent 80%);
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.hero h1 { color: #fff; }
.hero .lede { color: rgba(238, 241, 246, .74); margin-top: 22px; }
.hero .eyebrow { color: var(--gold-400); }
.hero .eyebrow::before { background: var(--gold-400); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 52px;
  padding-top: 30px;
  border-top: 1px solid rgba(238, 241, 246, .14);
}
.hero-stats b {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 27px);
  color: #fff;
}
.hero-stats span { display: block; font-size: 12.5px; color: rgba(238, 241, 246, .62); margin-top: 5px; }
@media (max-width: 1024px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
}
@media (max-width: 560px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}

/* Hero görsel paneli (schematic) */
.schematic { position: relative; }
.schematic svg { width: 100%; height: auto; filter: drop-shadow(0 40px 60px rgba(0, 0, 0, .45)); }
.sch-grid line { stroke: rgba(238, 241, 246, .1); stroke-width: 1; }
.sch-plan { fill: rgba(30, 61, 114, .28); stroke: rgba(216, 188, 107, .55); stroke-width: 1.4; }
.sch-route { fill: none; stroke: var(--gold-400); stroke-width: 2.4; stroke-dasharray: 7 7; animation: dash 14s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -280; } }
.sch-label { font-family: var(--font-mono); font-size: 10px; fill: rgba(238, 241, 246, .8); letter-spacing: .1em; }
.sch-gauge-arc { fill: none; stroke-width: 5; stroke-linecap: round; }

/* --- 4. Sayfa başlığı (iç sayfalar) --------------------------------- */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + 70px) 0 clamp(56px, 7vw, 92px);
  color: #EEF1F6;
  overflow: hidden;
  isolation: isolate;
  border-bottom: 1px solid rgba(238, 241, 246, .08);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(80% 90% at 85% 0%, rgba(30, 61, 114, .62), transparent 60%),
    linear-gradient(150deg, #0A1322, #0E1B2E 60%, #0A1322);
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(238, 241, 246, .045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(238, 241, 246, .045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, #000, transparent 92%);
}
.page-hero .wrap { max-width: 860px; }
.page-hero h1 { color: #fff; }
.page-hero .lede { color: rgba(238, 241, 246, .74); margin-top: 22px; }
.page-hero .eyebrow { color: var(--gold-400); }
.page-hero .eyebrow::before { background: var(--gold-400); }

/* --- 5. CTA bandı --------------------------------------------------- */
.cta-band {
  position: relative;
  padding: clamp(64px, 8vw, 104px) 0;
  text-align: center;
  color: #EEF1F6;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(70% 120% at 50% 0%, rgba(30, 61, 114, .72), transparent 62%),
    linear-gradient(160deg, #0A1322, #0E1B2E 55%, #0A1322);
}
.cta-band::after {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(to right, rgba(238, 241, 246, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(238, 241, 246, .05) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(70% 100% at 50% 40%, #000 10%, transparent 78%);
}
.cta-band h2 { color: #fff; max-width: 20ch; margin-inline: auto; }
.cta-band p { color: rgba(238, 241, 246, .7); margin: 18px auto 0; max-width: 56ch; }
.cta-band .eyebrow { justify-content: center; color: var(--gold-400); }
.cta-band .eyebrow::before { background: var(--gold-400); }
.cta-band .hero-actions,
.cta-band .actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 34px; }

/* --- 6. Alıntı ------------------------------------------------------ */
.quote {
  position: relative;
  margin: 0 0 8px;
  padding: 30px 34px 30px 58px;
  background: var(--bg-2);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--fg);
}
.quote::before {
  content: "”";
  position: absolute;
  left: 18px; top: 22px;
  font-family: var(--font-display);
  font-size: 52px;
  line-height: 1;
  color: var(--accent);
  opacity: .9;
}
.quote cite {
  display: block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-style: normal;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--fg-mute);
}

/* --- 7. Konfor modeli (5 boyut) ------------------------------------- */
.dimensions {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.dimensions > div { padding: 28px 24px; border-right: 1px solid var(--line); }
.dimensions > div:last-child { border-right: none; }
.dimensions h4 { color: var(--accent); margin-bottom: 8px; }
.dimensions p { font-size: 14px; color: var(--fg-soft); }
@media (max-width: 980px) {
  .dimensions { grid-template-columns: repeat(2, 1fr); }
  .dimensions > div { border-bottom: 1px solid var(--line); }
  .dimensions > div:nth-child(2n) { border-right: none; }
}
@media (max-width: 560px) { .dimensions { grid-template-columns: 1fr; } .dimensions > div { border-right: none; } }

/* --- 8. Segment satırı ---------------------------------------------- */
.segment-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.segment {
  padding: 28px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  transition: transform .3s var(--ease), border-color .3s, box-shadow .3s;
}
.segment:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow); }
.segment .tag { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.segment p { margin-top: 10px; color: var(--fg-soft); font-size: 15px; }
@media (max-width: 860px) { .segment-row { grid-template-columns: 1fr; } }

/* --- 9. Footer ------------------------------------------------------ */
.foot {
  position: relative;
  color: rgba(238, 241, 246, .8);
  background:
    radial-gradient(80% 120% at 50% 0%, rgba(30, 61, 114, .4), transparent 60%),
    #0A1322;
  border-top: 1px solid rgba(238, 241, 246, .08);
  padding-top: clamp(52px, 6vw, 76px);
}
.foot .brand { color: #fff; }
.foot .brand .mark { color: #fff; }
.foot-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: clamp(44px, 5vw, 64px);
}
.foot-brand p { margin-top: 16px; font-size: 13.5px; max-width: 300px; color: rgba(238, 241, 246, .58); }
.foot h4 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold-400);
  margin-bottom: 16px;
}
.foot ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.foot ul a { font-size: 14px; color: rgba(238, 241, 246, .72); }
.foot ul a:hover { color: #fff; }
.foot-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  padding: 22px 0 30px;
  border-top: 1px solid rgba(238, 241, 246, .1);
  font-size: 12.5px;
  color: rgba(238, 241, 246, .5);
}
.foot-legal a:hover { color: #fff; }
@media (max-width: 900px) { .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 540px) { .foot-grid { grid-template-columns: 1fr; } }

/* --- 10. İçerik sayfası iki kolon ----------------------------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

.prose { color: var(--fg-soft); }
.prose p + p { margin-top: 16px; }
.prose strong { color: var(--fg); font-weight: 600; }