/*
Theme Name: yuVem Studio Custom
Author: yuVem
Description: yuVem — Premium Yazılım & Ağ Altyapı Stüdyosu. Minimalist, zarif, modern.
Version: 2.0
*/

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,200;0,14..32,300;0,14..32,400;0,14..32,500;0,14..32,600;1,14..32,300&display=swap');

:root {
  /* Base */
  --bg: #0a0a0f;
  --bg-subtle: #0f0f1a;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-md: rgba(255, 255, 255, 0.06);

  /* Borders */
  --border: rgba(255, 255, 255, 0.08);
  --border-md: rgba(255, 255, 255, 0.14);

  /* Brand */
  --blue-1: #1d6af8;
  --blue-2: #3b82f6;
  --blue-3: #60a5fa;
  --blue-glow: rgba(29, 106, 248, 0.3);

  /* Text */
  --txt-1: #f2f2f7;
  --txt-2: #a0a8b8;
  --txt-3: #52596b;

  /* Spacing */
  --nav-h: 72px;
  --section-gap: 140px;
  --container: 1200px;

  /* Easing */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Font */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--txt-1);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

img,
canvas,
svg {
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(29, 106, 248, 0.5);
  border-radius: 2px;
}

/* ============================================================
   LAYOUT HELPERS
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 2.5rem;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
#site-nav {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 900;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 0.5s var(--ease-out),
    border-color 0.5s var(--ease-out);
  border-bottom: 1px solid transparent;
}

#site-nav.scrolled {
  background: rgba(10, 10, 15, 0.82);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border-color: var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 2.5rem;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.nav-logo-img {
  height: 36px;
  width: auto;
}

/* Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 0.45rem 0.9rem;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--txt-2);
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
  letter-spacing: 0.01em;
}

.nav-links a:hover {
  color: var(--txt-1);
  background: var(--surface-md);
}

.nav-links .nav-cta {
  margin-left: 0.5rem;
  padding: 0.5rem 1.1rem;
  background: var(--blue-1);
  color: #fff;
  font-weight: 500;
  border-radius: 7px;
  transition: opacity 0.2s, box-shadow 0.3s, background 0.2s;
}

.nav-links .nav-cta:hover {
  background: var(--blue-2);
  box-shadow: 0 0 24px var(--blue-glow);
  color: #fff;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
#hero {
  position: relative;
  width: 100%;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-block: calc(var(--nav-h) + 5rem) 6rem;
}

/* Three.js canvas */
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  will-change: transform;
}

/* Soft radial vignette */
.hero-vignette {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 70% 60% at 50% 40%,
      transparent 30%,
      rgba(10, 10, 15, 0.65) 100%),
    linear-gradient(to bottom,
      rgba(10, 10, 15, 0.1) 0%,
      rgba(10, 10, 15, 0) 30%,
      rgba(10, 10, 15, 0) 60%,
      rgba(10, 10, 15, 1) 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 900px;
  margin-inline: auto;
  padding-inline: 2.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.25rem;
}

/* Eyebrow label */
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 1.1rem;
  background: rgba(29, 106, 248, 0.15);
  border: 1px solid rgba(29, 106, 248, 0.6);
  box-shadow: 0 0 20px rgba(29, 106, 248, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #ffffff;
  /* Sönük kalmaması için saf beyaz */
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(12px);
  will-change: transform, opacity;
}

.eyebrow-dot {
  width: 5px;
  height: 5px;
  background: #22c55e;
  border-radius: 50%;
  box-shadow: 0 0 6px #22c55e;
  animation: blink 2.5s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.3;
  }
}

/* Main headline */
.hero-headline {
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 500;
  /* İncelikten kurtarılıp çok daha belirgin hale getirildi */
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: #ffffff;
  /* Tam beyaz */
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.8), 0 0 15px rgba(0, 0, 0, 0.6);
  /* 3D dünyadan kopması için çok güçlü gölge efekti */
}

.hero-headline .line {
  display: block;
  overflow: hidden;
  /* 'j', 'y' gibi harflerin alt kısımlarının kesilmesini engeller */
  padding-bottom: 0.2em;
  margin-bottom: -0.2em;
  /* 'İ', 'Ş' gibi şapkalı/noktalı büyük harflerin üst kısmının kesilmesini engeller */
  padding-top: 0.2em;
  margin-top: -0.2em;
}

.hero-headline .line span {
  display: block;
  opacity: 0;
  transform: translateY(100%);
  will-change: transform, opacity;
}

.hero-headline em {
  font-style: italic;
  font-weight: 700;
  /* İnşa ediyoruz kısmı daha vurgulu */
  will-change: transform, opacity;
  color: var(--blue-2);
  /* Işık yansıması yerine temanın sabit mavi tonu */
}

/* Description */
.hero-desc {
  font-size: 1.125rem;
  font-weight: 400;
  /* Daha okunaklı bir kalınlık */
  color: #f1f5f9;
  /* Soluk griden daha parlak bir beyaza çekildi */
  text-shadow: 0 2px 15px rgba(0, 0, 0, 0.9);
  /* Arka planda kaybolmasını engelleyen gölge */
  max-width: 560px;
  line-height: 1.75;
  opacity: 0;
  transform: translateY(16px);
  will-change: transform, opacity;
}

/* CTA Row */
.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(16px);
  will-change: transform, opacity;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: all 0.25s var(--ease-out);
  white-space: nowrap;
}

.btn-solid {
  background: var(--blue-1);
  color: #fff;
  box-shadow: 0 2px 20px rgba(29, 106, 248, 0.2);
}

.btn-solid:hover {
  background: var(--blue-2);
  box-shadow: 0 4px 32px rgba(29, 106, 248, 0.45);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--txt-2);
  border: 1px solid var(--border-md);
}

.btn-outline:hover {
  color: var(--txt-1);
  border-color: rgba(255, 255, 255, 0.25);
  background: var(--surface-md);
  transform: translateY(-1px);
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  transition: transform 0.25s var(--ease-spring);
}

.btn-solid:hover svg {
  transform: translateX(3px);
}

/* Scroll hint */
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  opacity: 0;
  animation: fade-up 0.8s 2.8s var(--ease-out) forwards;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--txt-3));
  animation: scroll-grow 1.8s ease-in-out infinite;
}

@keyframes scroll-grow {

  0%,
  100% {
    height: 28px;
    opacity: 0.4;
  }

  50% {
    height: 48px;
    opacity: 1;
  }
}

.scroll-txt {
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--txt-3);
}

/* ============================================================
   SECTION: FEATURED PROJECT (Captive Portal)
   ============================================================ */
#featured {
  padding-block: var(--section-gap);
}

.featured-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

/* Left: text */
.featured-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--blue-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  opacity: 0;
  will-change: transform, opacity;
}

.featured-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin-bottom: 1.25rem;
  opacity: 0;
  transform: translateY(24px);
  will-change: transform, opacity;
}

.featured-title strong {
  font-weight: 500;
}

.featured-desc {
  font-size: 1rem;
  color: var(--txt-2);
  line-height: 1.8;
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(16px);
  will-change: transform, opacity;
}

.featured-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  opacity: 0;
  will-change: transform, opacity;
}

.tag {
  padding: 0.3rem 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--txt-3);
  letter-spacing: 0.04em;
  transition: border-color 0.2s, color 0.2s;
}

.tag:hover {
  border-color: rgba(29, 106, 248, 0.4);
  color: var(--blue-3);
}

.featured-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--blue-3);
  opacity: 0;
  transition: gap 0.25s var(--ease-spring);
  will-change: transform, opacity;
}

.featured-link:hover {
  gap: 0.8rem;
}

.featured-link svg {
  width: 15px;
  height: 15px;
  transition: transform 0.25s var(--ease-spring);
}

.featured-link:hover svg {
  transform: translateX(4px);
}

/* Right: Visual card */
.featured-visual {
  opacity: 0;
  transform: translateX(32px);
  will-change: transform, opacity;
}

.featured-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.5rem;
  overflow: hidden;
  transition: border-color 0.4s, box-shadow 0.4s;
}

.featured-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
      rgba(29, 106, 248, 0.04) 0%,
      transparent 60%);
  pointer-events: none;
}

.featured-card:hover {
  border-color: rgba(29, 106, 248, 0.3);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4),
    0 0 40px rgba(29, 106, 248, 0.06);
}

/* Card header bar */
.card-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.card-top-dots {
  display: flex;
  gap: 0.4rem;
}

.card-top-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-md);
}

.card-top-dots span:first-child {
  background: #ff5f57;
}

.card-top-dots span:nth-child(2) {
  background: #febc2e;
}

.card-top-dots span:nth-child(3) {
  background: #28c840;
}

.card-live-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  color: #22c55e;
}

.live-dot {
  width: 5px;
  height: 5px;
  background: #22c55e;
  border-radius: 50%;
  box-shadow: 0 0 6px #22c55e;
  animation: blink 2s ease-in-out infinite;
}

/* Topology visualization (pure CSS) */
.topology-viz {
  position: relative;
  height: 180px;
  margin-bottom: 2rem;
}

.topo-canvas {
  width: 100%;
  height: 100%;
}

/* Stats strip */
.card-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.metric {
  background: var(--bg-subtle);
  padding: 1rem;
  text-align: center;
}

.metric-val {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--txt-1);
  letter-spacing: -0.03em;
  display: block;
  line-height: 1;
  margin-bottom: 0.3rem;
}

.metric-lbl {
  font-size: 0.67rem;
  color: var(--txt-3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ============================================================
   SECTION: SERVICES
   ============================================================ */
#services {
  padding-block: var(--section-gap);
  border-top: 1px solid var(--border);
}

.section-header {
  text-align: center;
  margin-bottom: 5rem;
}

.section-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--blue-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  opacity: 0;
  will-change: transform, opacity;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 300;
  letter-spacing: -0.025em;
  line-height: 1.1;
  opacity: 0;
  transform: translateY(20px);
  will-change: transform, opacity;
}

.section-title strong {
  font-weight: 500;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.service-card {
  background: var(--bg-subtle);
  padding: 2.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: background 0.3s;
  will-change: transform, opacity;
}

.service-card:hover {
  background: var(--surface-md);
}

.service-icon {
  width: 44px;
  height: 44px;
  background: rgba(29, 106, 248, 0.08);
  border: 1px solid rgba(29, 106, 248, 0.2);
  border-radius: 10px;
  display: grid;
  place-items: center;
  margin-bottom: 1.5rem;
  transition: background 0.3s, box-shadow 0.3s;
}

.service-card:hover .service-icon {
  background: rgba(29, 106, 248, 0.14);
  box-shadow: 0 0 20px rgba(29, 106, 248, 0.15);
}

.service-icon svg {
  width: 20px;
  height: 20px;
  color: var(--blue-3);
}

.service-name {
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.service-desc {
  font-size: 0.875rem;
  color: var(--txt-2);
  line-height: 1.75;
}

/* ============================================================
   SECTION: ABOUT / PHILOSOPHY
   ============================================================ */
#about {
  padding-block: var(--section-gap);
  border-top: 1px solid var(--border);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 6rem;
  align-items: start;
}

.about-left {
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
}

.about-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--blue-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 0;
  will-change: transform, opacity;
}

.about-statement {
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-weight: 300;
  line-height: 1.3;
  letter-spacing: -0.02em;
  opacity: 0;
  transform: translateY(20px);
  will-change: transform, opacity;
}

.about-statement em {
  font-style: italic;
  color: var(--txt-2);
}

.about-items {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.about-item {
  opacity: 0;
  transform: translateY(20px);
  will-change: transform, opacity;
}

.about-item-num {
  font-size: 0.7rem;
  color: var(--txt-3);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  font-variant-numeric: tabular-nums;
}

.about-item-title {
  font-size: 1.0625rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.about-item-text {
  font-size: 0.9rem;
  color: var(--txt-2);
  line-height: 1.75;
}

/* ============================================================
   FOOTER
   ============================================================ */
#site-footer {
  border-top: 1px solid var(--border);
  padding-block: 3.5rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  display: flex;
  align-items: center;
}

.footer-logo img {
  height: 28px;
  width: auto;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.footer-logo:hover img {
  opacity: 1;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--txt-3);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  font-size: 0.8125rem;
  color: var(--txt-3);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--txt-2);
}

/* ============================================================
   REVEAL UTILITY (used by JS)
   ============================================================ */
.revealed {
  opacity: 1 !important;
  transform: none !important;
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .featured-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .featured-visual {
    transform: none;
  }

  .services-grid {
    grid-template-columns: 1fr 1fr;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .about-left {
    position: static;
  }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 90px;
  }

  /* Mobil Hero Düzeltmeleri */
  .hero-content {
    gap: 1.25rem;
    /* Mobilde dikey boşluklar daraltıldı */
  }

  .hero-headline {
    font-size: clamp(2rem, 9vw, 4rem);
    /* Kelimelerin alt satıra geçip kırpılmaması için küçültüldü */
    line-height: 1.15;
    /* Satırlar arası nefes alma payı bırakıldı */
  }

  .hero-headline .line {
    /* Negatif marginler mobilde kelimeleri birbirine soktuğu için sıfırlandı */
    margin-bottom: 0;
    margin-top: 0;
    padding-bottom: 0.1em;
    padding-top: 0.1em;
  }

  .hero-desc {
    font-size: 1rem;
    line-height: 1.6;
    margin-top: 0.5rem;
  }

  .nav-links {
    display: none;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .featured-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }

  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding-inline: 1.25rem;
  }

  .hero-content {
    padding-inline: 1.25rem;
  }

  .hero-ctas {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    justify-content: center;
    width: 100%;
  }

  .featured-card {
    padding: 1.5rem;
  }
}