/* ==========================================================================
   Suphi Atilim CELIKOZ - Kisisel marka sitesi
   Bolumler:
   01 Tokens / Tema        06 Uzmanlik alanlari    11 Sertifikalar
   02 Reset / Temel        07 Hakkimda + akis      12 Egitim
   03 Yardimci siniflar    08 Zaman cizelgesi      13 Iletisim
   04 Header / Navigasyon  09 Projeler             14 Footer
   05 Hero                 10 Mobil uygulamalar    15 Yazdirma (CV)
   ========================================================================== */

/* 01 -- Tokens ------------------------------------------------------------ */
:root {
  color-scheme: dark;

  --bg:          #060a15;
  --bg-soft:     #0a1020;
  --surface:     #0e1526;
  --surface-2:   #131d33;
  --surface-3:   #18233d;
  --border:      rgba(255, 255, 255, .09);
  --border-str:  rgba(255, 255, 255, .17);

  --text:        #e8eefc;
  --text-soft:   #b6c3dd;
  --muted:       #8395b5;

  --brand:       #2e7dff;
  --brand-soft:  #6ba4ff;
  --brand-dim:   rgba(46, 125, 255, .14);
  --cyan:        #22d3ee;
  --cyan-dim:    rgba(34, 211, 238, .13);
  --amber:       #f5a524;
  --amber-dim:   rgba(245, 165, 36, .13);
  --green:       #2dd4a7;
  --green-dim:   rgba(45, 212, 167, .13);
  --violet:      #a78bfa;
  --violet-dim:  rgba(167, 139, 250, .13);

  --grad:        linear-gradient(135deg, #2e7dff 0%, #22d3ee 100%);
  --grad-text:   linear-gradient(120deg, #ffffff 0%, #a9c8ff 46%, #22d3ee 100%);

  --radius:      18px;
  --radius-sm:   12px;
  --radius-lg:   26px;
  --shadow:      0 18px 50px -22px rgba(0, 0, 0, .8);
  --shadow-lg:   0 40px 90px -38px rgba(0, 0, 0, .95);
  --ring:        0 0 0 3px rgba(46, 125, 255, .45);

  --nav-h:       72px;
  --maxw:        1180px;

  --ff-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --ff-head: "Space Grotesk", var(--ff-sans);
  --ff-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

html[data-theme="light"] {
  color-scheme: light;

  --bg:          #f4f7fc;
  --bg-soft:     #eaeff9;
  --surface:     #ffffff;
  --surface-2:   #f2f6fd;
  --surface-3:   #e7eef9;
  --border:      rgba(11, 22, 44, .11);
  --border-str:  rgba(11, 22, 44, .20);

  --text:        #0b1526;
  --text-soft:   #33445f;
  --muted:       #5b6b87;

  --brand:       #1d5fe0;
  --brand-soft:  #1d5fe0;
  --brand-dim:   rgba(29, 95, 224, .09);
  --cyan:        #0e8ba8;
  --cyan-dim:    rgba(14, 139, 168, .10);
  --amber:       #a86c07;
  --amber-dim:   rgba(168, 108, 7, .10);
  --green:       #0d8f6e;
  --green-dim:   rgba(13, 143, 110, .10);
  --violet:      #6d47d9;
  --violet-dim:  rgba(109, 71, 217, .10);

  --grad-text:   linear-gradient(120deg, #0b1526 0%, #1d5fe0 55%, #0e8ba8 100%);
  --shadow:      0 16px 40px -24px rgba(13, 30, 60, .35);
  --shadow-lg:   0 34px 70px -36px rgba(13, 30, 60, .40);
}

/* 02 -- Reset / Temel ----------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--ff-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(680px 480px at 78% -6%,  rgba(46, 125, 255, .22), transparent 62%),
    radial-gradient(560px 420px at 4% 24%,   rgba(34, 211, 238, .13), transparent 60%),
    radial-gradient(760px 700px at 52% 116%, rgba(46, 125, 255, .11), transparent 62%);
}
html[data-theme="light"] body::before { opacity: .55; }

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .6;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 85% 55% at 50% 0%, #000 15%, transparent 78%);
  mask-image: radial-gradient(ellipse 85% 55% at 50% 0%, #000 15%, transparent 78%);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
ul { list-style: none; padding: 0; }

h1, h2, h3, h4 {
  font-family: var(--ff-head);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.02em;
}

::selection { background: var(--brand); color: #fff; }

:focus-visible { outline: none; box-shadow: var(--ring); border-radius: 10px; }

.skip-link {
  position: absolute;
  left: 16px;
  top: -90px;
  z-index: 300;
  padding: 12px 22px;
  background: var(--brand);
  color: #fff;
  border-radius: 0 0 12px 12px;
  transition: top .2s;
}
.skip-link:focus { top: 0; }

/* 03 -- Yardimci siniflar -------------------------------------------------- */
.wrap { width: min(100% - 40px, var(--maxw)); margin-inline: auto; }

.section { padding: clamp(62px, 8.5vw, 116px) 0; position: relative; }
.section--alt {
  background: color-mix(in srgb, var(--surface) 60%, transparent);
  border-block: 1px solid var(--border);
}

.section-head { max-width: 800px; margin-bottom: clamp(34px, 5vw, 58px); }
.section-head--center { margin-inline: auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
  padding: 7px 15px;
  font-family: var(--ff-mono);
  font-size: .73rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--brand-soft);
  background: var(--brand-dim);
  border: 1px solid var(--border-str);
  border-radius: 999px;
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--cyan-dim);
}

.section-title { font-size: clamp(1.8rem, 3.9vw, 2.85rem); }

.section-desc {
  margin-top: 16px;
  max-width: 66ch;
  color: var(--text-soft);
  font-size: clamp(1rem, 1.5vw, 1.08rem);
}
.section-head--center .section-desc { margin-inline: auto; }

.card {
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
}

.btn {
  --btn-bg: var(--surface-2);
  --btn-fg: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 25px;
  font-size: .95rem;
  font-weight: 600;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--border-str);
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
}
.btn:hover { transform: translateY(-2px); border-color: var(--brand); }
.btn:active { transform: translateY(0); }
.btn svg { width: 17px; height: 17px; flex: none; }

.btn--primary {
  --btn-bg: var(--grad);
  --btn-fg: #fff;
  border-color: transparent;
  box-shadow: 0 12px 30px -14px rgba(46, 125, 255, .9);
}
.btn--primary:hover { box-shadow: 0 18px 42px -16px rgba(46, 125, 255, 1); }
.btn--ghost { --btn-bg: transparent; }
.btn--sm { padding: 9px 18px; font-size: .86rem; }

.tag {
  display: inline-block;
  padding: 5px 12px;
  font-family: var(--ff-mono);
  font-size: .77rem;
  color: var(--text-soft);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  white-space: nowrap;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.22, .61, .36, 1), transform .7s cubic-bezier(.22, .61, .36, 1);
  transition-delay: var(--d, 0ms);
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

/* 04 -- Header / Navigasyon ------------------------------------------------ */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  border-bottom: 1px solid transparent;
}
.header.is-stuck {
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(16px) saturate(1.4);
  border-bottom-color: var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 18px;
  width: min(100% - 40px, var(--maxw));
  margin-inline: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--ff-head);
  font-weight: 700;
  letter-spacing: -.01em;
  margin-right: auto;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  flex: none;
  border-radius: 11px;
  background: var(--grad);
  color: #fff;
  font-size: .82rem;
  letter-spacing: .02em;
  box-shadow: 0 8px 20px -10px rgba(46, 125, 255, .95);
}
.brand__name { font-size: .98rem; white-space: nowrap; }
.brand__role {
  display: block;
  font-family: var(--ff-mono);
  font-size: .66rem;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative;
  padding: 9px 13px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-soft);
  border-radius: 999px;
  transition: color .18s ease, background .18s ease;
}
.nav a:hover { color: var(--text); background: var(--surface-2); }
.nav a.is-active { color: var(--text); }
.nav a.is-active::after {
  content: "";
  position: absolute;
  left: 13px; right: 13px; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
}

.header__actions { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 11px;
  cursor: pointer;
  transition: border-color .18s ease, transform .18s ease, color .18s ease;
}
.icon-btn:hover { border-color: var(--brand); transform: translateY(-1px); }
.icon-btn svg { width: 18px; height: 18px; }

.lang-switch {
  display: flex;
  padding: 3px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 11px;
}
.lang-switch a {
  padding: 5px 11px;
  font-family: var(--ff-mono);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--muted);
  border-radius: 8px;
  transition: color .18s, background .18s;
}
.lang-switch a[aria-current="true"] { color: #fff; background: var(--brand); }

.theme-toggle .icon-moon { display: none; }
html[data-theme="light"] .theme-toggle .icon-moon { display: block; }
html[data-theme="light"] .theme-toggle .icon-sun { display: none; }

.burger { display: none; }

@media (max-width: 1024px) {
  .nav {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 16px 20px 26px;
    background: color-mix(in srgb, var(--bg) 96%, transparent);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transform: translateY(-14px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .22s ease, transform .22s ease, visibility .22s;
  }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav a { padding: 13px 14px; font-size: 1rem; border-radius: var(--radius-sm); }
  .nav a.is-active::after { display: none; }
  .nav a.is-active { background: var(--brand-dim); }
  .burger { display: grid; }
  /* CV butonu her zaman erisilebilir kalsin: dar ekranda ikona doner */
  .header__cv { padding: 0; width: 40px; height: 40px; border-radius: 11px; }
  .header__cv .header__cv-label { display: none; }
}
/* Dar ekranda marka adi header yuksekligini tasirmasin: yalniz logo rozeti kalir */
@media (max-width: 720px) {
  .brand__role { display: none; }
}
@media (max-width: 620px) {
  .brand__name { display: none; }
}

/* 05 -- Hero -------------------------------------------------------------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + clamp(48px, 8vw, 96px)) 0 clamp(56px, 7vw, 92px);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.hero__status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px 7px 12px;
  margin-bottom: 22px;
  font-size: .82rem;
  color: var(--text-soft);
  background: var(--green-dim);
  border: 1px solid color-mix(in srgb, var(--green) 35%, transparent);
  border-radius: 999px;
}
.hero__dot {
  position: relative;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
}
.hero__dot::after {
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  border: 1px solid var(--green);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { transform: scale(.6); opacity: .9; }
  100% { transform: scale(1.5); opacity: 0; }
}

.hero__title {
  font-size: clamp(2.3rem, 6vw, 4.15rem);
  line-height: 1.03;
  letter-spacing: -.035em;
}
.hero__title span { display: block; }

.hero__roles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-top: 20px;
  font-family: var(--ff-mono);
  font-size: clamp(.82rem, 1.5vw, .95rem);
  color: var(--brand-soft);
}
.hero__roles li { display: flex; align-items: center; gap: 14px; }
.hero__roles li:not(:last-child)::after {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--border-str);
}

.hero__lead {
  margin-top: 26px;
  max-width: 56ch;
  font-size: clamp(1.02rem, 1.7vw, 1.18rem);
  color: var(--text-soft);
}
.hero__lead strong { color: var(--text); font-weight: 600; }

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero__social {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid var(--border);
}
.hero__social span {
  font-family: var(--ff-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 4px;
}

/* Fotograf */
.hero__photo { position: relative; justify-self: center; width: min(100%, 380px); }
.hero__photo-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-str);
  background: var(--surface-2);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 3 / 3.7;
}
.hero__photo-frame img { width: 100%; height: 100%; object-fit: cover; object-position: center 18%; }
.hero__photo-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(6, 10, 21, .78) 100%);
  pointer-events: none;
}
html[data-theme="light"] .hero__photo-frame::after {
  background: linear-gradient(180deg, transparent 52%, rgba(11, 21, 38, .55) 100%);
}

.hero__photo-fallback {
  display: grid;
  place-items: center;
  width: 100%; height: 100%;
  font-family: var(--ff-head);
  font-size: 4rem;
  font-weight: 700;
  color: #fff;
  background: var(--grad);
}

.hero__photo-glow {
  position: absolute;
  inset: -22% -18% -12%;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 45%, rgba(46, 125, 255, .42), transparent 66%);
  filter: blur(26px);
}

.hero__badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border: 1px solid var(--border-str);
  border-radius: 14px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  font-size: .8rem;
  line-height: 1.3;
}
.hero__badge b { display: block; font-family: var(--ff-head); font-size: .93rem; }
.hero__badge small { color: var(--muted); font-size: .72rem; }
.hero__badge--tl { top: 8%; left: -12%; animation: float 6s ease-in-out infinite; }
.hero__badge--br { bottom: 12%; right: -12%; animation: float 6s ease-in-out infinite 1.6s; }
.hero__badge i {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  flex: none;
  border-radius: 9px;
  background: var(--brand-dim);
  color: var(--brand-soft);
  font-style: normal;
}
.hero__badge i svg { width: 16px; height: 16px; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

/* Istatistik kartlari */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: clamp(48px, 6vw, 78px);
}
.stat { padding: 24px 22px; }
.stat__num {
  display: block;
  font-family: var(--ff-head);
  font-size: clamp(1.9rem, 3.4vw, 2.5rem);
  line-height: 1;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat__label { display: block; margin-top: 9px; font-size: .87rem; color: var(--text-soft); }

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__photo { order: -1; width: min(100%, 300px); }
  .hero__badge--tl { left: -8%; }
  .hero__badge--br { right: -8%; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 480px) {
  .hero__badge { display: none; }
}

/* 06 -- Uzmanlik alanlari -------------------------------------------------- */
.domains {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.domain {
  position: relative;
  padding: 28px 26px 26px;
  overflow: hidden;
  transition: transform .22s ease, border-color .22s ease;
}
.domain:hover { transform: translateY(-5px); border-color: var(--border-str); }
.domain::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--accent, var(--brand));
  opacity: .85;
}
.domain__icon {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  margin-bottom: 18px;
  border-radius: 13px;
  background: var(--accent-dim, var(--brand-dim));
  color: var(--accent, var(--brand));
}
.domain__icon svg { width: 23px; height: 23px; }
.domain h3 { font-size: 1.12rem; }
.domain p { margin-top: 10px; font-size: .92rem; color: var(--text-soft); }
.domain ul { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.domain li { font-family: var(--ff-mono); font-size: .73rem; color: var(--muted); }
.domain li:not(:last-child)::after { content: " /"; color: var(--border-str); }

/* 07 -- Hakkimda ---------------------------------------------------------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  gap: clamp(30px, 5vw, 62px);
  align-items: start;
}
.about__text p { margin-bottom: 18px; color: var(--text-soft); font-size: 1.03rem; }
.about__text p:last-child { margin-bottom: 0; }
.about__text strong { color: var(--text); font-weight: 600; }

.about__quote {
  margin: 26px 0;
  padding: 20px 24px;
  border-left: 3px solid var(--brand);
  background: var(--brand-dim);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: var(--ff-head);
  font-size: 1.12rem;
  color: var(--text);
}

/* Akis: Maden -> ... -> Dijital cozumler */
.flow { padding: 28px 24px; }
.flow__title {
  font-family: var(--ff-mono);
  font-size: .72rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}
.flow__list { display: grid; gap: 4px; }
.flow__item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
  transition: transform .2s ease, border-color .2s ease;
}
.flow__item:hover { transform: translateX(5px); border-color: var(--brand); }
.flow__num {
  font-family: var(--ff-mono);
  font-size: .7rem;
  color: var(--brand-soft);
  min-width: 22px;
}
.flow__label { font-weight: 600; font-size: .95rem; }
.flow__arrow {
  justify-self: center;
  width: 1px;
  height: 16px;
  margin-left: 36px;
  background: linear-gradient(var(--border-str), transparent);
}
.flow__item--final {
  background: var(--grad);
  border-color: transparent;
  color: #fff;
}
.flow__item--final .flow__num { color: rgba(255, 255, 255, .75); }

@media (max-width: 900px) { .about { grid-template-columns: 1fr; } }

/* 08 -- Zaman cizelgesi ---------------------------------------------------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 11px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--brand), var(--cyan), transparent);
  opacity: .5;
}

.tl-item { position: relative; padding-bottom: 30px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -29px; top: 22px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--brand);
  box-shadow: 0 0 0 4px var(--brand-dim);
}
.tl-item--edu::before { border-color: var(--cyan); box-shadow: 0 0 0 4px var(--cyan-dim); }
.tl-item--now::before { background: var(--brand); }

.tl-card { padding: 22px 24px; transition: transform .2s ease, border-color .2s ease; }
.tl-card:hover { transform: translateX(5px); border-color: var(--border-str); }

.tl-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: 8px;
}
.tl-year {
  font-family: var(--ff-mono);
  font-size: .78rem;
  font-weight: 600;
  color: var(--brand-soft);
  padding: 3px 11px;
  background: var(--brand-dim);
  border-radius: 999px;
}
.tl-item--edu .tl-year { color: var(--cyan); background: var(--cyan-dim); }
.tl-kind {
  font-family: var(--ff-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.tl-card h3 { font-size: 1.12rem; }
.tl-org { display: block; margin-top: 3px; font-size: .9rem; color: var(--brand-soft); font-weight: 500; }
.tl-card p { margin-top: 11px; font-size: .93rem; color: var(--text-soft); }
.tl-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 15px; }

/* 09 -- Projeler ----------------------------------------------------------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 30px;
}
.filter {
  padding: 9px 18px;
  font-size: .88rem;
  font-weight: 500;
  color: var(--text-soft);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: all .18s ease;
}
.filter:hover { border-color: var(--brand); color: var(--text); }
.filter[aria-pressed="true"] {
  color: #fff;
  background: var(--grad);
  border-color: transparent;
}

.projects {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}
.project {
  display: flex;
  flex-direction: column;
  padding: 26px;
  overflow: hidden;
  position: relative;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.project:hover {
  transform: translateY(-6px);
  border-color: var(--border-str);
  box-shadow: var(--shadow);
}
.project.is-hidden { display: none; }

.project__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}
.project__icon {
  display: grid;
  place-items: center;
  width: 50px; height: 50px;
  flex: none;
  border-radius: 14px;
  background: var(--accent-dim, var(--brand-dim));
  color: var(--accent, var(--brand));
  font-family: var(--ff-head);
  font-size: 1.15rem;
  font-weight: 700;
}
.project__icon svg { width: 24px; height: 24px; }
.project__kind {
  font-family: var(--ff-mono);
  font-size: .66rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
}
.project h3 { font-size: 1.16rem; }
.project__url {
  display: inline-block;
  margin-top: 5px;
  font-family: var(--ff-mono);
  font-size: .77rem;
  color: var(--brand-soft);
}
.project p { margin-top: 13px; font-size: .93rem; color: var(--text-soft); }

.project__meta { margin-top: 18px; display: grid; gap: 10px; }
.project__row { display: flex; gap: 10px; font-size: .87rem; }
.project__row b {
  flex: none;
  min-width: 62px;
  font-family: var(--ff-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  padding-top: 3px;
}
.project__row span { color: var(--text-soft); }

.project__tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
.project__links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: auto; padding-top: 22px; }

/* 10 -- Mobil uygulamalar -------------------------------------------------- */
.apps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
}
/* Genis ekranda bes uygulama tek sirada dursun */
@media (min-width: 1100px) {
  .apps { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
}
.app { display: flex; flex-direction: column; align-items: center; text-align: center; }

.phone {
  position: relative;
  width: 100%;
  max-width: 216px;
  aspect-ratio: 9 / 18.5;
  padding: 9px;
  border-radius: 32px;
  background: linear-gradient(160deg, #222c42, #0c1322);
  border: 1px solid var(--border-str);
  box-shadow: var(--shadow-lg);
  transition: transform .28s ease;
}
.app:hover .phone { transform: translateY(-8px) rotate(-1.2deg); }
.phone::before {
  content: "";
  position: absolute;
  top: 16px; left: 50%;
  transform: translateX(-50%);
  width: 58px; height: 5px;
  border-radius: 99px;
  background: rgba(255, 255, 255, .22);
  z-index: 2;
}
.phone__screen {
  position: relative;
  width: 100%; height: 100%;
  border-radius: 24px;
  overflow: hidden;
  background: var(--app-bg, linear-gradient(170deg, #101a30, #060b16));
  display: flex;
  flex-direction: column;
  padding: 32px 15px 15px;
  color: #eef3ff;
}
/* Yalnizca dogrudan cocuk olan tam ekran goruntusu; ikon gorselleri etkilenmez */
.phone__screen > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

.phone__icon {
  display: grid;
  place-items: center;
  width: 52px; height: 52px;
  margin: 4px auto 12px;
  border-radius: 14px;
  background: var(--app-accent, #2e7dff);
  color: #fff;
  font-size: 1.35rem;
  box-shadow: 0 10px 22px -10px rgba(0, 0, 0, .9);
}
/* Gercek uygulama simgesi kullanildiginda kendi zeminini getirir */
.phone__icon--img { background: none; overflow: hidden; }
.phone__icon--img img { width: 100%; height: 100%; object-fit: cover; border-radius: inherit; }
.phone__name { font-family: var(--ff-head); font-size: .84rem; font-weight: 700; }
.phone__sub { font-size: .6rem; color: rgba(238, 243, 255, .6); margin-top: 2px; }
.phone__rows { display: grid; gap: 6px; margin-top: 14px; text-align: left; }
.phone__row {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 9px;
  font-size: .58rem;
  line-height: 1.3;
  color: rgba(238, 243, 255, .82);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 9px;
}
.phone__row::before {
  content: "";
  width: 5px; height: 5px;
  flex: none;
  border-radius: 50%;
  background: var(--app-accent, #2e7dff);
}

.app__body { margin-top: 20px; }
.app h3 { font-size: 1.03rem; }
.app p { margin-top: 8px; font-size: .87rem; color: var(--text-soft); max-width: 30ch; margin-inline: auto; }
.app__links { display: flex; justify-content: center; gap: 8px; margin-top: 15px; }

.play-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  font-size: .8rem;
  font-weight: 600;
  background: var(--surface-2);
  border: 1px solid var(--border-str);
  border-radius: 11px;
  transition: border-color .18s ease, transform .18s ease;
}
.play-badge:hover { border-color: var(--brand); transform: translateY(-2px); }
.play-badge svg { width: 17px; height: 17px; }
.play-badge small { display: block; font-size: .62rem; font-weight: 500; color: var(--muted); }

/* 11 -- Yetkinlikler / Sertifikalar ---------------------------------------- */
.skills {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.skillset { padding: 26px 24px; }
.skillset__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.skillset__head i {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  flex: none;
  border-radius: 11px;
  background: var(--accent-dim, var(--brand-dim));
  color: var(--accent, var(--brand));
  font-style: normal;
}
.skillset__head i svg { width: 19px; height: 19px; }
.skillset h3 { font-size: 1.05rem; }
.skillset__note { font-size: .85rem; color: var(--muted); margin-bottom: 16px; }
.skillset ul { display: flex; flex-wrap: wrap; gap: 8px; }

.certs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 18px;
}
.cert {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px 24px;
  overflow: hidden;
  transition: transform .22s ease, border-color .22s ease;
}
.cert:hover { transform: translateY(-5px); border-color: var(--border-str); }
.cert::after {
  content: "";
  position: absolute;
  top: -55px; right: -55px;
  width: 130px; height: 130px;
  border-radius: 50%;
  background: var(--accent-dim, var(--brand-dim));
}
.cert__seal {
  position: relative;
  display: grid;
  place-items: center;
  width: 52px; height: 52px;
  margin-bottom: 18px;
  border-radius: 14px;
  background: var(--accent-dim, var(--brand-dim));
  border: 1px solid color-mix(in srgb, var(--accent, var(--brand)) 40%, transparent);
  color: var(--accent, var(--brand));
}
.cert__seal svg { width: 25px; height: 25px; }
.cert h3 { position: relative; font-size: 1.06rem; }
.cert__issuer {
  position: relative;
  display: block;
  margin-top: 4px;
  font-family: var(--ff-mono);
  font-size: .76rem;
  color: var(--accent, var(--brand));
}
.cert p { position: relative; margin-top: 12px; font-size: .89rem; color: var(--text-soft); }
.cert__btn { margin-top: auto; padding-top: 20px; }
.cert__btn button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  font-size: .83rem;
  font-weight: 600;
  background: var(--surface-2);
  border: 1px solid var(--border-str);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color .18s ease;
}
.cert__btn button:hover { border-color: var(--accent, var(--brand)); }
.cert__btn button svg { width: 15px; height: 15px; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(3, 6, 14, .86);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .24s ease, visibility .24s;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox__inner {
  position: relative;
  width: min(100%, 820px);
  max-height: 88vh;
  overflow: auto;
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--border-str);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}
.lightbox__close {
  position: absolute;
  top: 14px; right: 14px;
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
}
.lightbox__title { font-size: 1.2rem; margin-bottom: 6px; padding-right: 40px; }
.lightbox__issuer { font-family: var(--ff-mono); font-size: .8rem; color: var(--brand-soft); }
.lightbox__body { margin-top: 20px; }
.lightbox__body img { width: 100%; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.lightbox__placeholder {
  display: grid;
  place-items: center;
  gap: 10px;
  padding: 54px 24px;
  text-align: center;
  color: var(--muted);
  font-size: .9rem;
  border: 1px dashed var(--border-str);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.lightbox__placeholder code {
  font-family: var(--ff-mono);
  font-size: .78rem;
  color: var(--brand-soft);
  background: var(--brand-dim);
  padding: 4px 9px;
  border-radius: 6px;
}

/* 12 -- Egitim ------------------------------------------------------------- */
.edu { display: grid; gap: 14px; }
.edu-item {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding: 22px 26px;
  transition: border-color .2s ease, transform .2s ease;
}
.edu-item:hover { border-color: var(--border-str); transform: translateX(4px); }
.edu-item__years {
  font-family: var(--ff-mono);
  font-size: .86rem;
  font-weight: 600;
  color: var(--cyan);
}
.edu-item h3 { font-size: 1.06rem; }
.edu-item span { display: block; margin-top: 3px; font-size: .9rem; color: var(--text-soft); }
@media (max-width: 640px) {
  .edu-item { grid-template-columns: 1fr; gap: 8px; }
}

/* 13 -- Iletisim ----------------------------------------------------------- */
.contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.contact-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 28px 26px;
  transition: transform .2s ease, border-color .2s ease;
}
.contact-card:hover { transform: translateY(-5px); border-color: var(--brand); }
.contact-card i {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  margin-bottom: 12px;
  border-radius: 13px;
  background: var(--brand-dim);
  color: var(--brand-soft);
  font-style: normal;
}
.contact-card i svg { width: 21px; height: 21px; }
.contact-card small {
  font-family: var(--ff-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-card b { font-family: var(--ff-head); font-size: 1.02rem; word-break: break-word; }

.cta-band {
  margin-top: 34px;
  padding: clamp(32px, 5vw, 52px);
  text-align: center;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-str);
  background:
    radial-gradient(600px 240px at 50% -10%, rgba(46, 125, 255, .28), transparent 70%),
    color-mix(in srgb, var(--surface) 90%, transparent);
}
.cta-band h3 { font-size: clamp(1.4rem, 3vw, 2rem); }
.cta-band p { margin: 12px auto 0; max-width: 52ch; color: var(--text-soft); }
.cta-band .hero__cta { justify-content: center; }

/* 14 -- Footer ------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0 34px;
  background: color-mix(in srgb, var(--surface) 55%, transparent);
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.footer p { font-size: .86rem; color: var(--muted); }
.footer nav { display: flex; flex-wrap: wrap; gap: 16px; font-size: .86rem; }
.footer nav a { color: var(--text-soft); transition: color .18s; }
.footer nav a:hover { color: var(--brand-soft); }

.to-top {
  position: fixed;
  right: 22px; bottom: 22px;
  z-index: 90;
  width: 44px; height: 44px;
  display: grid;
  place-items: center;
  background: var(--surface-2);
  border: 1px solid var(--border-str);
  border-radius: 13px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .24s ease;
  backdrop-filter: blur(10px);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { border-color: var(--brand); }
.to-top svg { width: 18px; height: 18px; }

/* 15 -- Yazdirma (sayfa dogrudan CV olarak ciktilanir) ---------------------- */
@media print {
  :root {
    --bg: #fff; --surface: #fff; --surface-2: #fff; --surface-3: #fff;
    --text: #111; --text-soft: #333; --muted: #555;
    --border: #d5dae3; --border-str: #b9c1cd;
    --brand: #14497f; --brand-soft: #14497f; --cyan: #14497f;
    --brand-dim: #eef3fa; --cyan-dim: #eef3fa;
    --shadow: none; --shadow-lg: none;
  }
  body { background: #fff; color: #111; font-size: 10.5pt; line-height: 1.45; }
  body::before, body::after { display: none; }
  .header, .to-top, .lightbox, .filters, .hero__cta, .hero__social,
  .cta-band, .footer nav, .hero__badge, .hero__photo-glow,
  .project__links, .app__links, .cert__btn, .skip-link, .print-hide { display: none !important; }
  .section { padding: 14pt 0; break-inside: avoid; }
  .section--alt { background: none; border: none; }
  .hero { padding: 0 0 12pt; }
  .hero__grid { grid-template-columns: 1fr 150px; gap: 18pt; }
  .hero__photo { width: 150px; }
  .hero__photo-frame { box-shadow: none; border: 1px solid #ccc; }
  .hero__title { font-size: 24pt; }
  .card, .project, .tl-card, .cert, .domain, .edu-item, .skillset, .contact-card {
    border: 1px solid #d5dae3 !important;
    background: #fff !important;
    box-shadow: none !important;
    break-inside: avoid;
    backdrop-filter: none;
  }
  .projects, .certs, .skills, .domains, .contact { grid-template-columns: 1fr 1fr; gap: 8pt; }
  .apps { display: none; }
  .stats { grid-template-columns: repeat(4, 1fr); }
  .reveal { opacity: 1 !important; transform: none !important; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 7.5pt; color: #555; word-break: break-all; }
  .grad-text, .stat__num { color: #14497f !important; -webkit-text-fill-color: #14497f; }
  h2, h3 { break-after: avoid; }
}