@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Mono:wght@300;400;500&display=swap');

/* === CRIMSON + WHITE (default) === */
:root {
  --bg: #ffffff;
  --surface: rgba(247, 242, 242, 0.82);
  --surface2: rgba(237, 228, 228, 0.85);
  --border: #e0cece;
  --accent: #dc143c;
  --accent2: #a00028;
  --text: #1a0a0a;
  --muted: #8a6060;
  --glow: rgba(220, 20, 60, 0.1);
  --nav-bg: rgba(255,255,255,0.82);
  --hero-grid-color: #e8d5d5;
  --bg-overlay-opacity: 0.60;
}

/* === CRIMSON + BLACK (dark) === */
:root.dark {
  --bg: #0a0000;
  --surface: rgba(21, 5, 5, 0.80);
  --surface2: rgba(32, 8, 8, 0.85);
  --border: #3a1010;
  --accent: #dc143c;
  --accent2: #ff4060;
  --text: #f5e8e8;
  --muted: #8a6060;
  --glow: rgba(220, 20, 60, 0.15);
  --nav-bg: rgba(10,0,0,0.82);
  --hero-grid-color: #2a0a0a;
  --bg-overlay-opacity: 0.70;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Mono', monospace;
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* BACKGROUND IMAGE */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url('../img/bg_img.png');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  filter: blur(6px) brightness(0.55) saturate(0.8);
  transform: scale(1.05);
  z-index: -2;
  pointer-events: none;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--bg);
  opacity: 0.55;
  z-index: -1;
  pointer-events: none;
  transition: background 0.3s;
}

/* NAV */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 4rem;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--accent); }

/* NAV RIGHT: toggle + hamburger */
.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* HAMBURGER BUTTON */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  padding: 6px;
  transition: border-color 0.2s;
}

.hamburger:hover { border-color: var(--accent); }

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

/* Hamburger → X animation */
.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* MOBILE MENU OVERLAY */
.mobile-menu {
  /* display: none yerine flex kullan, görünürlüğü opacity ile kontrol et */
  display: flex;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--nav-bg);
  backdrop-filter: blur(24px);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  visibility: hidden; /* ekran okuyuculardan da gizle */
}

.mobile-menu.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
  visibility: visible;
}

.mobile-menu a {
  font-family: 'Syne', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: color 0.2s;
}

.mobile-menu a:hover { color: var(--accent); }

.mobile-menu-close {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--muted);
  cursor: pointer;
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 4rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 50%, rgba(220,20,60,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(160,0,40,0.04) 0%, transparent 60%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--hero-grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid-color) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.5;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  width: 100%;
}

.hero-tag {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(220,20,60,0.35);
  padding: 0.3rem 0.8rem;
  border-radius: 2px;
  margin-bottom: 2rem;
  animation: fadeUp 0.6s ease both;
}

.hero h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  animation: fadeUp 0.6s 0.1s ease both;
}

.hero h1 .accent { color: var(--accent); }
.hero h1 .accent2 { color: var(--accent2); }

.hero-desc {
  font-size: 1rem;
  color: var(--muted);
  max-width: 480px;
  margin-bottom: 2.5rem;
  animation: fadeUp 0.6s 0.2s ease both;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeUp 0.6s 0.3s ease both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 3px;
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: #b01030;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(220,20,60,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* SECTIONS */
section {
  padding: 6rem 4rem;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

.section-label {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
  line-height: 1.1;
}

.divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  max-width: 1100px;
  margin: 0 auto;
}

/* GITHUB AVATAR */
.avatar-wrap {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  width: fit-content;
  max-width: 100%;
}

.avatar-wrap img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  flex-shrink: 0;
  /* Görselin taşmasını engelle */
  object-fit: cover;
  max-width: 64px;
}

.avatar-info .name {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
}

.avatar-info .handle {
  color: var(--muted);
  font-size: 0.8rem;
}

/* SKILLS GRID */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
}

.skill-card {
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--glow);
  opacity: 0;
  transition: opacity 0.2s;
}

.skill-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.skill-card:hover::before { opacity: 1; }

.skill-icon {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  display: block;
}

/* HOBBIES */
.hobbies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.hobby-card {
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.2s;
}

.hobby-card:hover {
  border-color: var(--accent2);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(220,20,60,0.08);
}

.hobby-num {
  font-family: 'Syne', sans-serif;
  font-size: 3rem;
  font-weight: 800;
  color: var(--border);
  line-height: 1;
  margin-bottom: 1rem;
}

.hobby-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.hobby-desc { color: var(--muted); font-size: 0.85rem; }

/* CONTACT */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s;
  /* Taşmayı engelle */
  overflow: hidden;
  word-break: break-word;
}

.contact-card:hover {
  border-color: var(--accent);
  transform: translateX(4px);
}

.contact-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-label { font-size: 0.7rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.1em; }
.contact-value { font-size: 0.85rem; word-break: break-all; }

/* PROJECTS */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2rem;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.project-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform: scaleX(0);
  transition: transform 0.3s;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(124,109,250,0.1);
}

.project-card:hover::after { transform: scaleX(1); }

.project-tag {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(124,109,250,0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  margin-bottom: 1rem;
}

.project-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.project-desc {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.project-link {
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.05em;
}

.project-link:hover { text-decoration: underline; }

/* =============================================
   SCROLL TO TOP BUTTON
   ============================================= */
.scroll-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 200;
  width: 44px;
  height: 44px;
  border-radius: 4px;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 20px rgba(220,20,60,0.35);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.2s;
}

.scroll-top-btn.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.scroll-top-btn:hover {
  background: var(--accent2);
  box-shadow: 0 8px 28px rgba(220,20,60,0.45);
}

/* =============================================
   HOBBY MODAL
   ============================================= */
.hobby-card {
  cursor: pointer;
}

/* Hide description inside the card — shown only in modal */
.hobby-card .hobby-desc {
  display: none;
}

/* "Detay" hint badge on card */
.hobby-hint {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(220,20,60,0.3);
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
  transition: background 0.2s;
}

.hobby-card:hover .hobby-hint {
  background: rgba(220,20,60,0.1);
}

/* Overlay backdrop */
.hobby-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(6px);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.hobby-modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

/* Modal box */
.hobby-modal {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2.5rem;
  max-width: 420px;
  width: 100%;
  position: relative;
  transform: translateY(16px) scale(0.97);
  transition: transform 0.25s ease;
  box-shadow: 0 24px 64px rgba(0,0,0,0.35), 0 0 0 1px rgba(220,20,60,0.12);
}

.hobby-modal-overlay.open .hobby-modal {
  transform: translateY(0) scale(1);
}

.hobby-modal-num {
  font-family: 'Syne', sans-serif;
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--border);
  line-height: 1;
  margin-bottom: 0.75rem;
}

.hobby-modal-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text);
}

.hobby-modal-desc {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
}

.hobby-modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--muted);
  font-size: 1rem;
  transition: border-color 0.2s, color 0.2s;
}

.hobby-modal-close:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* FOOTER */
footer {
  text-align: center;
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
}

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* THEME TOGGLE */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  color: var(--muted);
  transition: all 0.2s;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.theme-toggle .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* Görsellerin genel taşma koruması */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* =============================================
   RESPONSIVE — TABLET (max-width: 1024px)
   ============================================= */
@media (max-width: 1024px) {
  nav { padding: 1.2rem 2rem; }

  .hero { padding: 8rem 2rem 4rem; }

  section { padding: 5rem 2rem; }

  .skills-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }

  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  }
}

/* =============================================
   RESPONSIVE — MOBİL (max-width: 768px)
   ============================================= */
@media (max-width: 768px) {

  /* NAV — Hamburger göster, linkleri gizle */
  nav {
    padding: 1rem 1.5rem;
  }

  .nav-links {
    display: none; /* Masaüstü link listesi mobilde gizli */
  }

  .hamburger {
    display: flex; /* Hamburger butonu göster */
  }

  /* Theme toggle metnini kısalt */
  #theme-label {
    display: none;
  }

  .theme-toggle {
    padding: 0.35rem 0.5rem;
  }

  /* HERO */
  .hero {
    padding: 7rem 1.5rem 3rem;
    min-height: 100svh; /* Mobilde safe-area kullan */
  }

  .hero h1 {
    font-size: clamp(2.5rem, 12vw, 4rem);
  }

  .hero-desc {
    font-size: 0.9rem;
    max-width: 100%;
  }

  .hero-cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  /* SECTIONS */
  section {
    padding: 4rem 1.5rem;
  }

  .section-title {
    font-size: clamp(1.6rem, 7vw, 2.5rem);
  }

  /* AVATAR — Mobilde sığacak şekilde */
  .avatar-wrap {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1rem;
    width: 100%;
  }

  /* SKILLS GRID — Mobilde 2 kolon */
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }

  /* HOBBIES — Mobilde tek kolon */
  .hobbies-grid {
    grid-template-columns: 1fr;
  }

  /* CONTACT — Mobilde tek kolon */
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-card {
    transform: none !important; /* Hover slideı mobilde engelle */
  }

  /* PROJECTS — Mobilde tek kolon */
  .projects-grid {
    grid-template-columns: 1fr;
  }

  /* Scroll-to-top — Mobilde biraz daha küçük ve yukarıda */
  .scroll-top-btn {
    bottom: 1.25rem;
    right: 1.25rem;
    width: 40px;
    height: 40px;
  }

  /* Hobby Modal — Mobilde tam genişlik */
  .hobby-modal {
    padding: 2rem 1.5rem;
  }

  /* Arka plan — iOS fixed hack */
  body::after {
    background-attachment: scroll;
    filter: blur(8px) brightness(0.50) saturate(0.75);
  }
}

/* =============================================
   RESPONSIVE — KÜÇÜK MOBİL (max-width: 400px)
   ============================================= */
@media (max-width: 400px) {
  .hero h1 {
    font-size: 2.2rem;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .avatar-wrap img {
    width: 48px;
    height: 48px;
    max-width: 48px;
  }
}