/* ============================================================
   style.css — Portfolyo Özel Stilleri
   Tailwind'in karşılayamadığı özel animasyon ve bileşenler
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=DM+Serif+Display:ital@0;1&display=swap');

/* ─── DESIGN TOKENS ─────────────────────────────────────── */
:root {
  --bg-primary:     #f9fafb;
  --bg-secondary:   #ffffff;
  --bg-section:     #f3f4f6;

  --text-primary:   #1a1a2e;
  --text-secondary: #4b5563;
  --text-muted:     #9ca3af;

  --accent:         #6366f1;
  --accent-dark:    #4f46e5;
  --accent-light:   #e0e7ff;
  --accent-2:       #f59e0b;

  --shadow-sm:   0 1px 4px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:   0 4px 20px rgba(0,0,0,0.07), 0 2px 8px rgba(0,0,0,0.04);
  --shadow-lg:   0 12px 40px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.05);
  --shadow-hover:0 16px 48px rgba(99,102,241,0.18);

  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .display-font {
  font-family: 'DM Serif Display', serif;
}

/* ─── SCROLLBAR ─────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ─── SELECTION ─────────────────────────────────────────── */
::selection { background: var(--accent-light); color: var(--accent-dark); }

/* ─── NAVBAR ────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(249, 250, 251, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: box-shadow var(--transition);
}
.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 1.4rem;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 99px;
  transition: all var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: var(--accent-light);
}
.nav-cta {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 8px 20px !important;
}
.nav-cta:hover {
  background: var(--accent-dark) !important;
  color: #fff !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  border: none;
  background: none;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: #fff;
  border-bottom: 1px solid rgba(0,0,0,0.07);
  padding: 16px 24px 24px;
  z-index: 49;
  box-shadow: var(--shadow-md);
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 500;
  padding: 12px 0;
  border-bottom: 1px solid #f3f4f6;
  transition: color var(--transition);
}
.mobile-menu a:hover { color: var(--accent); }

/* ─── HERO ──────────────────────────────────────────────── */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--bg-primary);
  padding-top: 64px;
}
.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  pointer-events: none;
  animation: float 8s ease-in-out infinite;
}
.hero-blob-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #c7d2fe, #e0e7ff);
  top: -100px; right: -100px;
}
.hero-blob-2 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, #fde68a, #fef3c7);
  bottom: 50px; left: -80px;
  animation-delay: -4s;
}
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-24px) scale(1.04); }
}
.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 99px;
  margin-bottom: 20px;
  letter-spacing: 0.03em;
}
.hero-badge::before {
  content: '';
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}
.hero-title {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(2.6rem, 5vw, 4rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.hero-title .accent { color: var(--accent); font-style: italic; }
.hero-tagline {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: 99px;
  text-decoration: none;
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(99,102,241,0.3);
}
.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99,102,241,0.4);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: 99px;
  text-decoration: none;
  border: 1.5px solid #e5e7eb;
  transition: all var(--transition);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.hero-social {
  display: flex;
  gap: 12px;
  margin-top: 28px;
}
.social-link {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: #fff;
  border: 1.5px solid #e5e7eb;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition);
  font-size: 1.1rem;
}
.social-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

/* Avatar */
.hero-avatar-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-avatar-ring {
  position: relative;
  width: 320px; height: 320px;
}
.hero-avatar-ring::before {
  content: '';
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, var(--accent), var(--accent-light), var(--accent-2), var(--accent));
  animation: spin 8s linear infinite;
  opacity: 0.6;
}
@keyframes spin { to { transform: rotate(360deg); } }
.hero-avatar-ring::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: var(--bg-primary);
}
.hero-avatar {
  position: relative;
  z-index: 1;
  width: 100%; height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background: linear-gradient(135deg, var(--accent-light) 0%, #e0f2fe 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 7rem;
  overflow: hidden;
}
.hero-avatar img {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: 50%;
}
.hero-avatar .avatar-placeholder {
  font-size: 7rem;
  line-height: 1;
}

/* ─── SECTION COMMON ────────────────────────────────────── */
.section {
  padding: 100px 24px;
}
.section-alt { background: var(--bg-section); }
.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.section-title {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.8;
}
.section-header {
  margin-bottom: 56px;
}

/* ─── ABOUT ─────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text p {
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 16px;
  font-size: 1.02rem;
}
.highlights-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 28px;
}
.highlight-item {
  background: #fff;
  border: 1.5px solid #f3f4f6;
  border-radius: var(--radius-md);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: all var(--transition);
}
.highlight-item:hover {
  border-color: var(--accent-light);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}
.highlight-item .icon { font-size: 1.2rem; }

.about-visual {
  position: relative;
}
.about-card-stack {
  position: relative;
  height: 380px;
}
.about-card {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
}
.about-card-main {
  width: 100%;
  top: 0;
  background: linear-gradient(135deg, var(--accent) 0%, #818cf8 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
}
.about-card-main h3 {
  font-family: 'DM Serif Display', serif;
  font-size: 1.4rem;
  margin-bottom: 8px;
}
.about-card-main p { opacity: 0.85; font-size: 0.92rem; }
.about-card-bottom {
  bottom: 0; left: 24px; right: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.stat-item { text-align: center; }
.stat-number {
  display: block;
  font-family: 'DM Serif Display', serif;
  font-size: 1.8rem;
  color: var(--accent);
  line-height: 1;
}
.stat-label {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 4px;
  display: block;
}
.stat-divider {
  width: 1px; height: 40px;
  background: #e5e7eb;
}

/* ─── PROJECTS ──────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1.5px solid #f1f5f9;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  transform: translateY(-7px);
  box-shadow: var(--shadow-hover);
}
.project-card-img {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.project-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.project-card:hover .project-card-img img {
  transform: scale(1.05);
}
.project-card-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  font-family: 'DM Serif Display', serif;
  font-style: italic;
  color: rgba(99,102,241,0.4);
  letter-spacing: -0.05em;
}
.project-featured-badge {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 99px;
}
.project-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.project-title {
  font-family: 'DM Serif Display', serif;
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.3;
}
.project-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 16px;
}
.tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}
.tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  padding: 3px 10px;
  border-radius: 99px;
  letter-spacing: 0.02em;
}
.project-links {
  display: flex;
  gap: 10px;
}
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  padding: 6px 14px;
  border: 1.5px solid var(--accent-light);
  border-radius: 99px;
  transition: all var(--transition);
}
.project-link:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.project-link.github {
  color: var(--text-secondary);
  border-color: #e5e7eb;
}
.project-link.github:hover {
  background: var(--text-primary);
  color: #fff;
  border-color: var(--text-primary);
}

/* ─── SKILLS ────────────────────────────────────────────── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.skill-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1.5px solid #f1f5f9;
  transition: all var(--transition);
}
.skill-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-light);
}
.skill-card-icon {
  font-size: 2rem;
  margin-bottom: 14px;
  display: block;
}
.skill-card-title {
  font-family: 'DM Serif Display', serif;
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 18px;
}
.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.skill-pill {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-section);
  padding: 5px 13px;
  border-radius: 99px;
  transition: all var(--transition);
}
.skill-pill:hover {
  background: var(--accent-light);
  color: var(--accent);
}

/* ─── CONTACT ───────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
  align-items: start;
}
.contact-info h3 {
  font-family: 'DM Serif Display', serif;
  font-size: 1.5rem;
  margin-bottom: 12px;
}
.contact-info p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
}
.contact-details { display: flex; flex-direction: column; gap: 12px; }
.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 0.92rem;
}
.contact-detail-icon {
  width: 36px; height: 36px;
  background: var(--accent-light);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

/* Form */
.contact-form-wrap {
  background: #fff;
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1.5px solid #f1f5f9;
}
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 7px;
}
.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid #e5e7eb;
  border-radius: var(--radius-md);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: all var(--transition);
  outline: none;
}
.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(99,102,241,0.1);
}
.form-input::placeholder,
.form-textarea::placeholder { color: var(--text-muted); }
.form-textarea { resize: vertical; min-height: 130px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.btn-submit {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: #fff;
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(99,102,241,0.3);
}
.btn-submit:hover:not(:disabled) {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99,102,241,0.4);
}
.btn-submit:disabled { opacity: 0.7; cursor: not-allowed; }

.form-status {
  display: none;
  text-align: center;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 14px;
}
.form-status.success {
  display: block;
  background: #ecfdf5;
  color: #065f46;
  border: 1.5px solid #a7f3d0;
}
.form-status.error {
  display: block;
  background: #fef2f2;
  color: #991b1b;
  border: 1.5px solid #fecaca;
}

/* ─── FOOTER ────────────────────────────────────────────── */
.footer {
  background: var(--text-primary);
  color: rgba(255,255,255,0.6);
  padding: 40px 24px;
  text-align: center;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 1.2rem;
  color: #fff;
  text-decoration: none;
}
.footer-logo span { color: var(--accent); }
.footer-links { display: flex; gap: 20px; }
.footer-links a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: #fff; }
.footer-copy { font-size: 0.82rem; }

/* ─── SCROLL REVEAL ─────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ─── BACK TO TOP ───────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 28px; right: 28px;
  width: 44px; height: 44px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 16px rgba(99,102,241,0.35);
  transition: all var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 40;
}
.back-to-top.visible { opacity: 1; pointer-events: all; }
.back-to-top:hover { background: var(--accent-dark); transform: translateY(-3px); }

/* ─── RESPONSIVE ────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 60px 24px;
  }
  .hero-actions { justify-content: center; }
  .hero-social { justify-content: center; }
  .hero-avatar-wrap { order: -1; }
  .hero-avatar-ring { width: 220px; height: 220px; }
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .section { padding: 72px 20px; }
  .projects-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .highlights-grid { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 24px; }
  .hero-tagline { font-size: 1rem; }
}