/* =========================================================
   Mahmut Hayıroğlu - Dijital Pazarlama Uzmanı
   Koyu tema, mobile-first, harici kütüphane yok.
   ========================================================= */

/* ---------- 1. Değişkenler ---------- */
:root {
  /* Arka plan gradyanı */
  --bg-start: #000000;
  --bg-end:   #707070;

  /* Yüzeyler */
  --card:        #101210;
  --card-hover:  #151815;
  --panel:       rgba(16, 18, 16, 0.72);
  --border:      rgba(255, 255, 255, 0.10);
  --border-soft: rgba(255, 255, 255, 0.06);

  /* Yeşil */
  --green:       #7ED957;
  --green-deep:  #00BF63;
  --green-soft:  rgba(126, 217, 87, 0.12);

  /* Metin */
  --text:       #ffffff;
  --text-muted: rgba(255, 255, 255, 0.68);
  --text-dim:   rgba(255, 255, 255, 0.60);
  --navy:       #062A45;

  /* Tipografi: klasik sans-serif */
  --font: Arial, "Helvetica Neue", Helvetica, sans-serif;

  --fs-xs:   0.75rem;
  --fs-sm:   1rem;
  --fs-base: 1rem;
  --fs-lg:   1.0625rem;
  --fs-xl:   1.25rem;
  --fs-2xl:  1.75rem;
  --fs-3xl:  2.25rem;

  /* Ölçek */
  --radius:      12px;
  --radius-sm:   8px;
  --radius-pill: 999px;
  --container:   1120px;
  --header-h:    64px;

  --shadow-cta:  0 12px 28px rgba(126, 217, 87, 0.28);
  --shadow-card: 0 16px 34px rgba(0, 0, 0, 0.45);
  --transition:  220ms ease;
}

/* ---------- 2. Sıfırlama ve temel ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font);
  font-size: var(--fs-base);
  line-height: 1.7;
  overflow-x: hidden;
  background-color: var(--bg-start);
  -webkit-font-smoothing: antialiased;
}

/* Diyagonal gradyan: sabit katman.
   iOS Safari background-attachment: fixed'i doğru işlemediği için pseudo eleman kullanılıyor. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(135deg, var(--bg-start) 0%, #0a0a0a 28%, #3a3a3a 68%, var(--bg-end) 100%);
}

body.nav-open { overflow: hidden; }

h1, h2, h3 {
  margin: 0 0 0.5em;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  text-align: left;
}

p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }

a { color: var(--green); text-decoration: none; transition: color var(--transition); }
/* Hover efektleri yalnızca gerçek imleçli cihazlarda uygulanır.
   Dokunmatikte :hover, dokunuştan sonra takılı kalıyordu. */
@media (hover: hover) {
  a:hover { color: var(--green-deep); }
}

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: var(--green); color: var(--navy); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 12px 18px;
  background: var(--green);
  color: var(--navy);
  font-weight: 700;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; color: var(--navy); }

/* ---------- 3. Yerleşim ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.section { padding: 72px 0; }
.section-dark {
  background: rgba(0, 0, 0, 0.34);
  border-block: 1px solid var(--border-soft);
}

.section-head { margin-bottom: 32px; }
.section-title { font-size: var(--fs-2xl); margin-bottom: 16px; }
.section-head .section-title { margin-bottom: 0; }

/* Etiket: HERO ve bölüm üstü küçük yeşil başlık */
.tag {
  display: inline-block;
  margin: 0 0 14px;
  padding: 6px 14px;
  border: 1px solid var(--green-deep);
  border-radius: var(--radius-pill);
  background: var(--green-soft);
  color: var(--green);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* ---------- 4. Butonlar ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 14px 30px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-primary {
  background: var(--green);
  color: var(--navy);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}
@media (hover: hover) {
  .btn-primary:hover {
    background: var(--green-deep);
    color: var(--navy);
    transform: translateY(-3px);
    box-shadow: var(--shadow-cta);
  }
}
.btn-primary:active { transform: translateY(-1px); }

/* ---------- 5. Başlık ve menü ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition);
}
.site-header.is-scrolled {
  background: rgba(0, 0, 0, 0.86);
  border-bottom-color: var(--border);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: var(--text);
}
@media (hover: hover) {
  .logo:hover { color: var(--text); }
}
.logo-photo {
  display: block;
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--green);
  background: var(--card);
  transition: border-color var(--transition);
}
@media (hover: hover) {
  .logo:hover .logo-photo { border-color: var(--green-deep); }
}

/* İsmin solundaki yeşil dikey çizgi */
.logo-mark {
  flex: 0 0 auto;
  width: 4px;
  height: 24px;
  border-radius: 2px;
  background: var(--green);
}
.logo-text {
  /* Ölçeğe bağlı değil: 16px'te dar ekranlarda isim ucundan kırpılıyordu. */
  font-size: 0.9375rem; /* 15px */
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  display: grid;
  place-content: center;
  gap: 5px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav {
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  padding: 8px 20px 20px;
  background: rgba(0, 0, 0, 0.96);
  border-bottom: 1px solid var(--border);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }

.nav-list { display: flex; flex-direction: column; }
.nav-list a {
  display: flex;
  align-items: center;
  min-height: 48px;
  color: var(--text-muted);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-soft);
}
.nav-list a.is-active { color: var(--green); }
@media (hover: hover) {
  .nav-list a:hover { color: var(--green); }
}
.nav-list li:last-child a { border-bottom: none; }
.nav-cta { color: var(--green) !important; }

/* ---------- 6. Hero ---------- */
.hero {
  position: relative;
  padding: 72px 0 88px;
  overflow: hidden;
}

.hero-inner { position: relative; z-index: 2; max-width: 720px; }

.hero-title {
  font-size: var(--fs-3xl);
  letter-spacing: 0.005em;
  margin-bottom: 18px;
}

.hero-lead {
  max-width: 46ch;
  margin-bottom: 30px;
  color: var(--text-muted);
  font-size: var(--fs-lg);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* İmza öğesi: yükseliş çizgisi */
.growth {
  position: absolute;
  right: 0;
  bottom: 0;
  z-index: 1;
  width: 100%;
  height: 68%;
  opacity: 0.5;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 38%, #000 100%);
          mask-image: linear-gradient(to right, transparent 0%, #000 38%, #000 100%);
}
.growth-svg { width: 100%; height: 100%; }

.growth-grid line {
  stroke: rgba(255, 255, 255, 0.07);
  stroke-width: 1;
}

.growth-bars rect {
  fill: rgba(126, 217, 87, 0.10);
  transform-origin: 50% 390px;
  transform: scaleY(0);
  transition: transform 900ms cubic-bezier(0.22, 1, 0.36, 1);
}
.growth-area {
  fill: url(#growthArea);
  opacity: 0;
  transition: opacity 900ms ease 700ms;
}
.growth-line {
  fill: none;
  stroke: url(#growthStroke);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
  filter: drop-shadow(0 0 10px rgba(126, 217, 87, 0.45));
}
.growth-dot {
  fill: var(--green);
  opacity: 0;
  filter: drop-shadow(0 0 10px rgba(126, 217, 87, 0.8));
}

/* Animasyon sayfa yüklenince tetiklenir */
.growth.is-live .growth-bars rect { transform: scaleY(1); }
.growth.is-live .growth-bars rect:nth-child(1) { transition-delay: 120ms; }
.growth.is-live .growth-bars rect:nth-child(2) { transition-delay: 220ms; }
.growth.is-live .growth-bars rect:nth-child(3) { transition-delay: 320ms; }
.growth.is-live .growth-bars rect:nth-child(4) { transition-delay: 420ms; }
.growth.is-live .growth-bars rect:nth-child(5) { transition-delay: 520ms; }
.growth.is-live .growth-bars rect:nth-child(6) { transition-delay: 620ms; }

.growth.is-live .growth-area { opacity: 1; }
.growth.is-live .growth-line { animation: draw 1900ms cubic-bezier(0.33, 0.9, 0.4, 1) forwards; }
.growth.is-live .growth-dot { animation: pop 500ms ease 1700ms forwards, pulse 2600ms ease-in-out 2200ms infinite; }

/* Hero ekrandan çıkınca sonsuz animasyon boşuna çalışmasın */
.growth.is-idle .growth-dot { animation-play-state: paused; }

@keyframes draw  { to { stroke-dashoffset: 0; } }
@keyframes pop   { from { opacity: 0; r: 3; } to { opacity: 1; r: 7; } }
@keyframes pulse {
  0%, 100% { filter: drop-shadow(0 0 8px rgba(126, 217, 87, 0.55)); }
  50%      { filter: drop-shadow(0 0 18px rgba(126, 217, 87, 0.95)); }
}

/* ---------- 7. Hizmet kartları ---------- */
.cards { display: grid; gap: 18px; }

.card {
  position: relative;
  padding: 26px 24px 24px 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition),
              background var(--transition), box-shadow var(--transition);
}

/* Solda ince yeşil dikey vurgu çubuğu */
.card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--green);
  transition: background var(--transition);
}

@media (hover: hover) {
  .card:hover {
    transform: translateY(-6px);
    background: var(--card-hover);
    border-color: var(--green-deep);
    box-shadow: var(--shadow-card);
  }
  .card:hover::before { background: var(--green-deep); }
}

.card-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: var(--radius-sm);
  background: var(--green-soft);
  border: 1px solid rgba(126, 217, 87, 0.28);
  color: var(--green);
}
.card-icon svg { width: 23px; height: 23px; }

.card h3 { font-size: var(--fs-base); letter-spacing: 0.04em; margin-bottom: 10px; }
.card p { margin: 0; color: var(--text-muted); font-size: var(--fs-sm); }

/* ---------- 8. Hakkımda ---------- */
.about { display: grid; gap: 28px; }
.about-text p:not(.tag) { color: var(--text-muted); margin: 0; }

.about-panel {
  padding: 6px 22px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.facts li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-soft);
}
.facts li:last-child { border-bottom: none; }

.fact-label {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
}
.fact-value { font-size: var(--fs-sm); color: var(--text); }

/* ---------- 9. İletişim ---------- */
.contact {
  padding: 28px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.contact-lead { margin: 0; color: var(--text-muted); }

.contact-links {
  display: grid;
  gap: 12px;
  margin: 28px 0;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 64px;
  padding: 12px 16px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
@media (hover: hover) {
  .contact-link:hover {
    transform: translateY(-3px);
    color: var(--text);
    border-color: var(--green-deep);
    background: rgba(126, 217, 87, 0.07);
  }
}

.contact-icon {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--green-soft);
  color: var(--green);
}
.contact-icon svg { width: 21px; height: 21px; }

.contact-body { display: flex; flex-direction: column; min-width: 0; }
.contact-label {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
}
.contact-value {
  font-size: var(--fs-sm);
  line-height: 1.4;
  overflow-wrap: anywhere;
}

/* ---------- 10. Alt bilgi ---------- */
.site-footer {
  background: rgba(0, 0, 0, 0.6);
  border-top: 1px solid var(--border);
  padding: 32px 0;
}
.footer-inner p { margin: 0; }
.footer-brand {
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: var(--fs-sm);
}
.footer-copy { margin-top: 8px !important; color: var(--text-dim); font-size: var(--fs-xs); }

/* ---------- 11. Giriş animasyonu ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 560ms ease, transform 560ms ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 11b. Sayfa yüklenirken fade-in ---------- */
.site-header,
#main,
.site-footer {
  animation: page-in 700ms ease both;
}
.site-header { animation-delay: 0ms; }
#main         { animation-delay: 90ms; }
.site-footer  { animation-delay: 180ms; }

@keyframes page-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ---------- 11c. Yukarı çık butonu ---------- */
.to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 60;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  padding: 0;
  background: var(--green);
  color: var(--navy);
  border: 1px solid var(--green-deep);
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.45);
  transition: opacity var(--transition), transform var(--transition),
              visibility var(--transition), background var(--transition),
              box-shadow var(--transition);
}
.to-top svg { width: 22px; height: 22px; }

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}
@media (hover: hover) {
  .to-top.is-visible:hover {
    background: var(--green-deep);
    transform: translateY(-3px);
    box-shadow: var(--shadow-cta);
  }
}
.to-top:active { transform: translateY(-1px); }

/* ---------- 12. Kırılma noktaları (mobile-first) ---------- */

/* 480px ve üzeri */
@media (min-width: 480px) {
  .container { padding: 0 24px; }
  .hero-title { font-size: 2.75rem; }
  .contact { padding: 36px 30px; }
}

/* 768px ve üzeri */
@media (min-width: 768px) {
  :root { --header-h: 72px; }

  .section { padding: 96px 0; }
  .section-title { font-size: var(--fs-3xl); }

  .hero { padding: 104px 0 120px; }
  .hero-title { font-size: 3.5rem; }
  .hero-lead { font-size: var(--fs-xl); }

  .logo-photo { width: 52px; height: 52px; }
  .logo { gap: 12px; }

  .nav-toggle { display: none; }
  .nav {
    position: static;
    padding: 0;
    background: transparent;
    border: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .nav-list { flex-direction: row; align-items: center; gap: 6px; }
  .nav-list a {
    min-height: 44px;
    padding: 0 14px;
    border-bottom: none;
    border-radius: var(--radius-pill);
    font-size: var(--fs-xs);
  }
  .nav-cta { border: 1px solid var(--green-deep); margin-left: 8px; }
  body.nav-open { overflow: auto; }

  .to-top { right: 28px; bottom: 28px; width: 52px; height: 52px; }

  .cards { grid-template-columns: repeat(3, 1fr); gap: 20px; }

  .about { grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: start; }

  .contact { padding: 44px 40px; }
  .contact-links { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  .footer-inner {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
  }
  .footer-copy { margin-top: 0 !important; }
}

/* 1024px ve üzeri */
@media (min-width: 1024px) {
  .section { padding: 112px 0; }
  .hero { padding: 128px 0 144px; }
  .hero-title { font-size: 4.25rem; }

  .growth { width: 78%; height: 82%; opacity: 0.62; }

  .card { padding: 30px 28px 28px 32px; }
  .card h3 { font-size: var(--fs-lg); }

  .about { gap: 72px; }
  .contact { padding: 56px 52px; }
}

/* ---------- 13. Hareket tercihi ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal { opacity: 1; transform: none; }
  .growth-line { stroke-dashoffset: 0; }
  .growth-area { opacity: 1; }
  .growth-dot { opacity: 1; }
  .growth-bars rect { transform: scaleY(1); }
  .to-top { transform: none; }

  @media (hover: hover) {
    .to-top.is-visible:hover { transform: none; }
  }
}