:root {
  /* Açık Tema Renkleri */
  --bg: #F6F8FB;
  --surface: #FFFFFF;
  --border: #E1E6EF;
  --text: #101A2C;
  --text-muted: #55617A;
  --text-faint: #8D97AE;
  --accent: #17ACAE;
  --accent-dark: #12898B;
  --accent-soft: #E1F5F5;
  --navy: #074a6b;
  --navy-deep: #0B233F;
  --radius: 0px; /* Daha keskin, net ve profesyonel görünüm için sıfırlandı */
  --max: 1120px;
}

/* Koyu Tema Renkleri */
[data-theme="dark"] {
  --bg: #0B1120;
  --surface: #111827;
  --border: #374151;
  --text: #F9FAFB;
  --text-muted: #9CA3AF;
  --text-faint: #6B7280;
  --accent-soft: #1F2937;
  --navy: #0B1120;
  --navy-deep: #030712;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Poppins', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.mono { font-family: 'JetBrains Mono', monospace; }
a { color: inherit; }
img, svg { display: block; }
ul { list-style: none; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}

section { padding: 88px 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- Header ---------- */
header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}
.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  text-decoration: none;
  color: var(--text);
}
.brand-mark {
  width: 32px; height: 32px;
  background: var(--accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand-mark svg { width: 17px; height: 17px; }

nav.links {
  display: flex;
  gap: 30px;
  font-size: 14.5px;
  font-weight: 500;
}
nav.links a {
  text-decoration: none;
  color: var(--text-muted);
  transition: color .15s ease;
}
nav.links a:hover, nav.links a:focus-visible { color: var(--text); }

.nav-actions { display: flex; align-items: center; gap: 16px; }

@media (max-width: 860px) {
  nav.links { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14.5px;
  font-weight: 600;
  padding: 11px 20px;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid transparent;
  transition: all .15s ease;
  cursor: pointer;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { border-color: var(--text-faint); }
.btn-icon { padding: 10px; background: transparent; border: 1px solid var(--border); color: var(--text-muted); }
.btn-icon:hover { color: var(--text); background: var(--bg); }
.btn-lg { padding: 14px 26px; font-size: 15.5px; }

/* ---------- Hero ---------- */
.hero {
  padding: 88px 0;
  background: var(--navy);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -140px; right: -120px;
  width: 520px; height: 520px;
  background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0));
  transform: rotate(28deg);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  left: -80px; bottom: -160px;
  width: 360px; height: 360px;
  background: var(--navy-deep);
  transform: rotate(20deg);
  pointer-events: none;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero .eyebrow { color: #6FE0E2; }
.hero .eyebrow::before { background: #6FE0E2; }
.hero h1 {
  color: #fff;
  font-size: clamp(34px, 4.4vw, 50px);
  line-height: 1.1;
  margin-bottom: 16px;
}
.hero h1 span { color: var(--accent); }
.hero .lede {
  font-size: 16.5px;
  color: #B7C4DA;
  max-width: 500px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.hero .btn-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.28);
}
.hero .btn-secondary:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.5); }

.hero-rows {
  display: flex;
  flex-direction: column;
  gap: 1px;
  max-width: 440px;
}
.hero-rows li {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255,255,255,0.05);
  border-left: 2px solid var(--accent);
  padding: 14px 18px;
  font-size: 14.5px;
  font-weight: 600;
}
.hero-rows .r-icon {
  width: 30px; height: 30px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.08);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.hero-rows .r-icon svg { width: 15px; height: 15px; }

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

.hero-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 20px 50px -20px rgba(5,15,30,0.5);
}
.hero-panel .hp-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}
.hero-panel .hp-head .dots { display: flex; gap: 6px; }
.hero-panel .hp-head .dots span { width: 9px; height: 9px; border-radius: 50%; background: var(--border); }
.hero-panel .hp-title { font-size: 12.5px; color: var(--text-faint); font-family: 'JetBrains Mono', monospace; }
.hp-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 0;
  border-top: 1px solid var(--border);
  font-size: 14px;
}
.hp-row:first-of-type { border-top: none; }
.hp-row .hp-name { color: var(--text); font-weight: 500; }
.hp-row .hp-sub { color: var(--text-faint); font-size: 12.5px; margin-top: 2px; }
.hp-row .hp-amt { font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: 13.5px; }
.hp-amt.pos { color: var(--accent); }
.hp-amt.neg { color: #B4453A; }
.hp-total {
  margin-top: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.hp-total .lbl { font-size: 13px; color: var(--text-muted); }
.hp-total .val { font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 20px; color: var(--accent); }

/* ---------- Section head ---------- */
.section-head {
  
  margin-bottom: 52px;
}
.section-head h2 {
  font-size: clamp(26px, 3.4vw, 34px);
  margin-bottom: 12px;
}
.section-head p {
  color: var(--text-muted);
  font-size: 16px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- Features (YENİDEN DÜZENLENDİ) ---------- */
.features { 
  background: var(--bg); 
  border-top: 1px solid var(--border); 
  border-bottom: 1px solid var(--border); 
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px; /* Kartlar arası boşluk eklendi */
}
@media (max-width: 880px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .feature-grid { grid-template-columns: 1fr; } }

.feature {
  background: var(--surface);
  padding: 40px 32px; /* Daha ferah iç boşluk */
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

/* Üst Kısım Hover Vurgu Çizgisi */
.feature::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.feature:hover {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
  transform: translateY(-4px);
}
.feature:hover::before {
  transform: scaleX(1);
}

.feature .f-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  border: 1px solid transparent;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: all 0.3s ease;
}

.feature:hover .f-icon {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.feature .f-icon svg { width: 24px; height: 24px; }
.feature h3 { font-size: 18px; margin-bottom: 12px; color: var(--text); }
.feature p { font-size: 14.5px; color: var(--text-muted); line-height: 1.7; margin: 0; }

/* ---------- Versions ---------- */
.current-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.current-card .cc-left { display: flex; align-items: center; gap: 20px; }
.current-card .cc-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: var(--radius);
}
.current-card .cc-ver {
  font-family: 'JetBrains Mono', monospace;
  font-size: 28px;
  font-weight: 700;
}
.current-card .cc-meta {
  display: flex;
  gap: 20px;
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.current-card .cc-actions { display: flex; gap: 12px; flex-wrap: wrap; }

table.history {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
table.history th {
  text-align: left;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 14px 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
table.history td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  vertical-align: top;
}
table.history tr:last-child td { border-bottom: none; }
table.history .t-ver { font-family: 'JetBrains Mono', monospace; font-weight: 600; }
table.history .t-date { color: var(--text-faint); font-family: 'JetBrains Mono', monospace; font-size: 12.5px; white-space: nowrap; }
table.history .t-note { color: var(--text-muted); }
table.history .t-dl a { color: var(--accent); text-decoration: none; font-weight: 600; font-size: 13.5px; white-space: nowrap; }
table.history .t-dl a:hover { text-decoration: underline; }

@media (max-width: 720px) {
  table.history thead { display: none; }
  table.history, table.history tbody, table.history tr, table.history td { display: block; width: 100%; }
  table.history tr { padding: 16px 20px; border-bottom: 1px solid var(--border); }
  table.history td { padding: 3px 0; border-bottom: none; }
  table.history .t-dl { margin-top: 8px; }
}

/* ---------- Sponsor ---------- */
.sponsor { background: var(--navy-deep); color: #fff; }
.sponsor .eyebrow { color: #6FE0E2; }
.sponsor .section-head h2 { color: #fff; }
.sponsor .section-head p { color: #B7C4DA; }

.sponsor-grid {
  display: grid;
  margin-bottom: 44px;
}
@media (max-width: 780px) { .sponsor-grid { grid-template-columns: 1fr; } }
.sponsor-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius);
  padding: 26px;
}
.sponsor-card h3 { color: #fff; font-size: 16.5px; margin-bottom: 8px; }
.sponsor-card p { font-size: 14px; color: #B7C4DA; margin-bottom: 18px; }
.sponsor-card a {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.3);
  padding: 9px 16px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all .15s ease;
}
.sponsor-card a:hover { background: #fff; color: var(--accent-dark); }

.sponsor-why {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.14);
}
@media (max-width: 780px) { .sponsor-why { grid-template-columns: repeat(2, 1fr); } }
.sponsor-why .w-num { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: #6FE0E2; margin-bottom: 6px; }
.sponsor-why .w-txt { font-size: 14px; color: #D5DDEA; }

/* ---------- Support ---------- */
.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 780px) { .support-grid { grid-template-columns: 1fr; } }
.support-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color .15s ease, transform .15s ease;
}
.support-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.support-card .s-icon {
  width: 34px; height: 34px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 6px;
}
.support-card .s-icon svg { width: 17px; height: 17px; }
.support-card h3 { font-size: 16px; }
.support-card p { font-size: 14px; color: var(--text-muted); }
.support-card .go { margin-top: auto; font-size: 13px; font-weight: 600; color: var(--accent); padding-top: 6px; }

/* ---------- Contact ---------- */
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 44px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
}
.contact-card h2 { font-size: clamp(24px,3vw,30px); margin-bottom: 10px; }
.contact-card p { color: var(--text-muted); max-width: 400px; }
.contact-list { display: flex; flex-direction: column; gap: 14px; min-width: 220px; }
.contact-list .c-label { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 3px; }
.contact-list a { text-decoration: none; font-weight: 600; color: var(--text); }
.contact-list a:hover { color: var(--accent); }

/* ---------- Contact Form ---------- */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  transition: border-color 0.15s ease;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea {
  min-height: 120px;
  resize: vertical;
}
.form-submit {
  text-align: right;
}

/* ---------- Footer ---------- */
footer { padding: 36px 0; border-top: 1px solid var(--border); background: var(--surface); }
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13.5px;
  color: var(--text-faint);
}
.footer-inner .brand { font-size: 15px; font-weight: 600; color: var(--text); }
.footer-links { display: flex; gap: 22px; }
.footer-links a { text-decoration: none; color: var(--text-faint); }
.footer-links a:hover { color: var(--accent); }