/* ======================================================
   PORTFÖY — STİL DOSYASI
   ------------------------------------------------------
   Renkleri tek yerden değiştirmek için aşağıdaki
   :root değişkenlerini düzenleyebilirsin.
   ====================================================== */

:root {
  /* ANA RENK — sitenin vurgu rengi. Buradan değiştir, her yere yansır. */
  --accent: #6c5ce7;          /* mor */
  --accent-dark: #5a4bd4;

  /* Nötr tonlar */
  --bg: #0e0e12;              /* koyu arka plan */
  --bg-alt: #16161d;         /* bölüm arka planı (biraz daha açık) */
  --surface: #1c1c26;        /* kart yüzeyi */
  --border: #2a2a37;         /* ince çizgiler */

  --text: #f2f2f5;           /* ana metin */
  --text-muted: #a0a0b0;     /* soluk metin */

  /* Ölçüler */
  --radius: 16px;
  --radius-sm: 10px;
  --max-width: 1140px;
  --transition: 0.3s ease;

  --font: 'Poppins', system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;       /* yumuşak kaydırma */
  scroll-padding-top: 80px;      /* sticky menü için boşluk */
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

/* ======================================================
   BUTONLAR
   ====================================================== */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform var(--transition), background var(--transition),
              box-shadow var(--transition), color var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 20px rgba(108, 92, 231, 0.3);
}
.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(108, 92, 231, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
}

.btn-block { width: 100%; text-align: center; }

/* ======================================================
   NAVİGASYON (sticky)
   ====================================================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(14, 14, 18, 0.7);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition),
              padding var(--transition);
  padding: 18px 0;
}
/* Sayfa kaydırılınca (script.js .scrolled ekler) */
.navbar.scrolled {
  padding: 12px 0;
  background: rgba(14, 14, 18, 0.9);
  border-bottom-color: var(--border);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-link {
  font-size: 0.95rem;
  color: var(--text-muted);
  position: relative;
  transition: color var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-link:hover,
.nav-link.active {
  color: var(--text);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Hamburger menü butonu (mobilde görünür) */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.menu-toggle span {
  width: 26px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
}
/* Açıkken X şekline dönüşür */
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ======================================================
   HERO / GİRİŞ
   ====================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  overflow: hidden;
  padding: 100px 0 60px;
}

/* Arka plandaki yumuşak renk lekeleri (animasyonlu) */
.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  z-index: 0;
}
.blob-1 {
  width: 420px; height: 420px;
  background: var(--accent);
  top: -80px; left: -100px;
  animation: float 9s ease-in-out infinite;
}
.blob-2 {
  width: 360px; height: 360px;
  background: #00b8a9;
  bottom: -120px; right: -80px;
  animation: float 11s ease-in-out infinite reverse;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 30px) scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero-greeting {
  color: var(--accent);
  font-weight: 500;
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.hero-name {
  font-size: clamp(2.6rem, 8vw, 5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
}

.hero-role {
  font-size: clamp(1.2rem, 4vw, 2rem);
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 24px;
  min-height: 1.4em;
}
.hero-role .static-text { color: var(--text-muted); }
.hero-role .typed-text { color: var(--text); font-weight: 600; }
/* Yanıp sönen imleç */
.cursor {
  display: inline-block;
  width: 3px;
  background: var(--accent);
  margin-left: 2px;
  animation: blink 1s infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

.hero-tagline {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto 36px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Aşağı kaydır göstergesi (fare ikonu) */
.scroll-down {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
.mouse {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid var(--text-muted);
  border-radius: 14px;
  position: relative;
}
.wheel {
  position: absolute;
  top: 8px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollWheel 1.6s infinite;
}
@keyframes scrollWheel {
  0% { opacity: 1; top: 8px; }
  100% { opacity: 0; top: 20px; }
}

/* ======================================================
   GENEL BÖLÜM YAPISI
   ====================================================== */
.section {
  padding: 110px 0;
}
.section-alt {
  background: var(--bg-alt);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}
.section-tag {
  display: inline-block;
  color: var(--accent);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.section-title {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -1px;
}
.section-sub {
  color: var(--text-muted);
  margin-top: 14px;
  font-size: 1.05rem;
}

/* ======================================================
   HAKKIMDA
   ====================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.about-text h3,
.about-skills h3 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 18px;
}
.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* Yetenek kartları ızgarası */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 10px;
  text-align: center;
  transition: transform var(--transition), border-color var(--transition),
              background var(--transition);
}
.skill-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  background: #20202c;
}
.skill-icon {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}
.skill-name {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ======================================================
   PORTFÖY
   ====================================================== */
.filter-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}
.filter-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 9px 22px;
  border-radius: 50px;
  font-family: var(--font);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover {
  color: var(--text);
  border-color: var(--accent);
}
.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

/* Portföy boşken gösterilen mesaj */
.portfolio-empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--text-muted);
  padding: 50px 0;
  font-size: 1.05rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition),
              border-color var(--transition);
}
.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
}
/* Filtreyle gizlenen kartlar */
.project-card.hide {
  display: none;
}

.project-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
}
.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.project-card:hover .project-image img {
  transform: scale(1.08);
}
.project-badge {
  position: absolute;
  top: 12px; left: 12px;
  background: rgba(14, 14, 18, 0.8);
  backdrop-filter: blur(6px);
  color: var(--text);
  font-size: 0.75rem;
  padding: 5px 12px;
  border-radius: 50px;
  border: 1px solid var(--border);
}

.project-info {
  padding: 22px;
}
.project-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.project-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 16px;
}
.project-link {
  color: var(--accent);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
}
.project-link:hover {
  color: var(--text);
  letter-spacing: 0.5px;
}

/* ======================================================
   İLETİŞİM
   ====================================================== */
/* Ortalanmış iletişim kutusu */
.contact-box {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}

/* Instagram DM ana butonu */
.btn-dm {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  padding: 15px 32px;
}
.btn-dm .dm-icon {
  width: 20px;
  height: 20px;
}

.contact-note {
  color: var(--text-muted);
  margin: 30px 0 18px;
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
}
.social-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: var(--transition);
}
.social-link svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}
.social-link:hover {
  color: var(--text);
  border-color: var(--accent);
  transform: translateX(6px);
}

/* ======================================================
   FOOTER
   ====================================================== */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 30px 0;
}
.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-content p {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.back-to-top {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text);
  font-size: 1.1rem;
  transition: var(--transition);
}
.back-to-top:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-4px);
}

/* ======================================================
   SCROLL FADE-IN ANİMASYONU
   (.reveal öğeleri görünür olunca .show alır — script.js)
   ====================================================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

/* ======================================================
   RESPONSIVE — TABLET
   ====================================================== */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .section { padding: 80px 0; }
}

/* ======================================================
   RESPONSIVE — MOBİL
   ====================================================== */
@media (max-width: 640px) {
  /* Mobil menü: ekranın üstünden açılır panel */
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    flex-direction: column;
    align-items: center;
    gap: 0;
    background: rgba(14, 14, 18, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
  }
  .nav-links.open {
    max-height: 320px;
    padding: 16px 0;
  }
  .nav-link {
    padding: 14px 0;
    width: 100%;
    text-align: center;
  }
  .menu-toggle { display: flex; }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .hero-buttons { flex-direction: column; width: 100%; }
  .hero-buttons .btn { width: 100%; }
  .footer-content { justify-content: center; text-align: center; }
}