/* =========================================================
   ABBAS KARAAĞAÇ — Tasarım Sistemi
   Yazılım geliştirici / Logo-Tiger ERP & E-ticaret uzmanı
   Konsept: "sistem paneli" — modüler, renkli, canlı
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* --- Renk tokenları --- */
  --ink: #12172B;
  --ink-soft: #1C2340;
  --paper: #F3F5F8;
  --paper-raised: #FFFFFF;
  --line: rgba(18, 23, 43, 0.10);
  --line-strong: rgba(18, 23, 43, 0.18);
  --text: #171B2E;
  --text-muted: #545B76;
  --text-on-dark: #EDEFF6;
  --text-on-dark-muted: #A4ABC9;

  --accent-indigo: #5B5FEF;
  --accent-lime: #B6F13B;
  --accent-coral: #FF6B4A;
  --accent-magenta: #FF3E9A;

  /* --- Tipografi --- */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* --- Layout --- */
  --container: 1180px;
  --radius: 14px;
  --radius-sm: 8px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; color: var(--text-muted); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--accent-indigo);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 2px;
  background: currentColor;
  display: inline-block;
}

/* =========================================================
   NAVBAR
   ========================================================= */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(243, 245, 248, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--container);
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
}
.brand__mark {
  width: 32px; height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent-indigo), var(--accent-magenta));
  display: flex; align-items: center; justify-content: center;
  color: white; font-family: var(--font-mono); font-weight: 500; font-size: 0.85rem;
}
.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: background .15s, color .15s;
}
.nav-links a:hover, .nav-links a.active {
  background: var(--ink);
  color: white;
}
.nav-cta {
  background: var(--ink);
  color: white !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
}
.nav-toggle { display: none; }

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

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--ink);
  color: white;
  box-shadow: 0 8px 24px rgba(18,23,43,0.18);
}
.btn-primary:hover { box-shadow: 0 12px 28px rgba(18,23,43,0.26); }
.btn-outline {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line-strong);
}
.btn-outline:hover { border-color: var(--ink); }
.btn-accent {
  background: var(--accent-lime);
  color: var(--ink);
}

/* =========================================================
   HERO — sistem paneli
   ========================================================= */
.hero {
  padding: 88px 0 60px;
  position: relative;
  overflow: hidden;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
}
.hero h1 { color: var(--ink); }
.hero h1 .hl {
  background: linear-gradient(90deg, var(--accent-indigo), var(--accent-magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lede { font-size: 1.12rem; max-width: 46ch; }
.hero__ctas { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }

/* --- Panel: modül node diyagramı --- */
.panel {
  background: var(--ink);
  border-radius: 22px;
  padding: 26px;
  position: relative;
  box-shadow: 0 30px 60px rgba(18,23,43,0.25);
}
.panel__header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-on-dark-muted);
}
.panel__dot { width: 9px; height: 9px; border-radius: 50%; }
.panel__dot--red { background: #FF5F57; }
.panel__dot--yellow { background: #FEBC2E; }
.panel__dot--green { background: #28C840; }

.node-map {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.node {
  background: var(--ink-soft);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius-sm);
  padding: 16px 14px;
  position: relative;
  overflow: hidden;
}
.node::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--node-color, var(--accent-indigo));
}
.node__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-on-dark-muted);
  display: block;
  margin-bottom: 6px;
}
.node__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text-on-dark);
}
.node__pulse {
  position: absolute;
  top: 14px; right: 12px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--node-color, var(--accent-indigo));
  box-shadow: 0 0 0 0 var(--node-color, var(--accent-indigo));
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--node-color, var(--accent-indigo)) 55%, transparent); }
  70%  { box-shadow: 0 0 0 9px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.panel__footer {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed rgba(255,255,255,0.1);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-on-dark-muted);
  display: flex;
  justify-content: space-between;
}
@media (prefers-reduced-motion: reduce) {
  .node__pulse { animation: none; }
}

/* =========================================================
   SECTION genel
   ========================================================= */
.section { padding: 76px 0; }
.section--tight { padding: 56px 0; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.section-head p { margin: 0; max-width: 52ch; }

/* =========================================================
   CARDS — hizmet / portfolyo
   ========================================================= */
.grid {
  display: grid;
  gap: 20px;
}
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  position: relative;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(18,23,43,0.10);
  border-color: var(--line-strong);
}
.card__code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: white;
  background: var(--card-accent, var(--accent-indigo));
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}
.card__title { margin-bottom: 8px; }
.card ul { margin: 14px 0 0; padding-left: 18px; color: var(--text-muted); font-size: 0.92rem; }
.card ul li { margin-bottom: 4px; }

.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 999px;
}
.card__bar {
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--card-accent, var(--accent-indigo));
}

/* Portfolio kategori pili */
.pill {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--card-accent, var(--accent-indigo));
  border: 1px solid currentColor;
  padding: 3px 10px;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 12px;
}

/* =========================================================
   BLOG
   ========================================================= */
.post-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 22px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.post-row:first-child { padding-top: 0; }
.post-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-top: 4px;
}
.post-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-indigo);
  margin-bottom: 8px;
  display: flex; gap: 10px; align-items: center;
}
.post-title { font-size: 1.3rem; margin-bottom: 8px; }
.post-title a:hover { color: var(--accent-indigo); }
@media (max-width: 620px) {
  .post-row { grid-template-columns: 1fr; gap: 6px; }
}

.prose { max-width: 68ch; font-size: 1.05rem; }
.prose p { color: var(--text); }

/* =========================================================
   CTA band
   ========================================================= */
.cta-band {
  background: var(--ink);
  border-radius: 24px;
  padding: 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(91,95,239,0.35), transparent 45%),
              radial-gradient(circle at 80% 80%, rgba(255,62,154,0.28), transparent 45%);
}
.cta-band > * { position: relative; z-index: 1; }
.cta-band h2 { color: white; margin-bottom: 10px; }
.cta-band p { color: var(--text-on-dark-muted); max-width: 48ch; margin: 0 auto 26px; }

/* =========================================================
   FORM (İletişim)
   ========================================================= */
.form-grid { display: grid; gap: 16px; max-width: 560px; }
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ink);
}
.field input, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--line-strong);
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: white;
  color: var(--text);
}
.field input:focus, .field textarea:focus {
  outline: 2px solid var(--accent-indigo);
  outline-offset: 1px;
  border-color: var(--accent-indigo);
}
.field textarea { min-height: 140px; resize: vertical; }

.contact-info {
  display: grid;
  gap: 14px;
}
.contact-info__item {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 16px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.contact-info__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-indigo);
  text-transform: uppercase;
  display: block;
  margin-bottom: 2px;
}

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  border-top: 1px solid var(--line);
  padding: 40px 0;
  margin-top: 40px;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.88rem;
  color: var(--text-muted);
}
.footer__links { display: flex; gap: 18px; }

/* =========================================================
   UTIL
   ========================================================= */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.badge-focus:focus-visible {
  outline: 2px solid var(--accent-indigo);
  outline-offset: 2px;
}
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent-indigo);
  outline-offset: 2px;
}