/* Pert Dünyası — Özet Sitesi */
/* HTML & CSS only, responsive, Turkish content */

/* ---------- Reset & Base ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background: #ffffff;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-bg {
  background: #f8fafc;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.section-header .subtitle {
  color: #64748b;
  font-size: 1rem;
}

/* ---------- Navbar ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #e2e8f0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.25rem;
  color: #0f172a;
}

.logo-mark {
  width: 32px;
  height: 32px;
  background: #2563eb;
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.875rem;
}

.logo-text {
  color: #0f172a;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: #334155;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #2563eb;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: #2563eb;
  color: #fff;
}

.btn-primary:hover {
  background: #1d4ed8;
}

.btn-secondary {
  background: #f1f5f9;
  color: #1e293b;
}

.btn-secondary:hover {
  background: #e2e8f0;
}

.btn-outline {
  background: transparent;
  color: #2563eb;
  border-color: #2563eb;
}

.btn-outline:hover {
  background: #eff6ff;
}

.btn-full {
  width: 100%;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: #334155;
  border-radius: 2px;
}

/* ---------- Hero ---------- */
.hero {
  padding: 6rem 0 7rem;
  background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.badge {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  background: #dbeafe;
  color: #1d4ed8;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  color: #0f172a;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
}

.hero p {
  font-size: 1.1rem;
  color: #475569;
  margin-bottom: 1.75rem;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.stat-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 1.25rem;
  text-align: center;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  color: #2563eb;
}

.stat-label {
  font-size: 0.8rem;
  color: #64748b;
  margin-top: 0.25rem;
  display: block;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  margin-bottom: 1rem;
  color: #334155;
}

.feature-list {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: #334155;
}

.feature-list .check {
  color: #2563eb;
  font-weight: 800;
}

.about-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 1.75rem;
}

.about-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 0.5rem;
}

.about-card p {
  color: #475569;
  font-size: 0.95rem;
}

/* ---------- Steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.step {
  text-align: center;
  padding: 2rem 1rem;
}

.step-number {
  width: 3rem;
  height: 3rem;
  background: #2563eb;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  margin: 0 auto 1rem;
}

.step h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 0.5rem;
}

.step p {
  color: #475569;
  font-size: 0.95rem;
}

/* ---------- Auction Grid ---------- */
.auction-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.auction-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.auction-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

.auction-icon {
  font-size: 2.5rem;
}

.auction-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #0f172a;
}

.auction-card p {
  color: #475569;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

/* ---------- Blog ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.blog-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

.blog-thumb {
  height: 160px;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.blog-card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.blog-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: #e2e8f0;
  color: #475569;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
}

.blog-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #0f172a;
}

.blog-card p {
  color: #475569;
  font-size: 0.95rem;
}

.read-more {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
}

.read-more:hover {
  gap: 0.6rem;
}

/* ---------- Testimonials ---------- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.testimonial-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.stars {
  color: #f59e0b;
  font-size: 1.25rem;
  font-weight: 700;
}

.testimonial-card p {
  color: #334155;
  font-size: 0.95rem;
  line-height: 1.7;
}

.testimonial-author {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.author-name {
  font-weight: 700;
  color: #0f172a;
}

.author-role {
  font-size: 0.85rem;
  color: #64748b;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-info p {
  color: #334155;
  margin-bottom: 0.75rem;
}

.socials {
  margin-top: 1.5rem;
  display: flex;
  gap: 1rem;
}

.socials a {
  text-decoration: none;
  color: #2563eb;
  font-weight: 500;
  font-size: 0.95rem;
}

.socials a:hover {
  text-decoration: underline;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: #334155;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #2563eb;
}

/* ---------- Footer ---------- */
.footer {
  padding: 3rem 0;
  border-top: 1px solid #e2e8f0;
  background: #f8fafc;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: #0f172a;
  text-decoration: none;
}

.footer-copy {
  color: #64748b;
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  text-decoration: none;
  color: #64748b;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: #2563eb;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-inner,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .steps,
  .auction-grid,
  .blog-grid,
  .testimonial-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h1 {
    font-size: 2.25rem;
  }

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

  .hero-actions .btn {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .steps,
  .auction-grid,
  .blog-grid,
  .testimonial-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    position: absolute;
    top: 4.5rem;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid #e2e8f0;
    flex-direction: column;
    padding: 1rem;
    gap: 0.75rem;
    display: none;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  }

  .nav-links.open {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    padding: 4rem 0 5rem;
  }

  .hero h1 {
    font-size: 1.875rem;
  }
}