/* Web Sayfası Premium Tasarım Sistemi - style.css */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Renk Paleti (Modern HSL) */
  --bg-dark: hsl(224, 71%, 4%);
  --bg-card: hsla(224, 71%, 7%, 0.65);
  --bg-card-hover: hsla(224, 71%, 10%, 0.8);
  --border-light: hsla(224, 71%, 20%, 0.3);
  --border-focus: hsla(217, 91%, 60%, 0.5);
  
  --text-main: hsl(220, 100%, 98%);
  --text-muted: hsl(218, 20%, 65%);
  --text-dark: hsl(224, 71%, 8%);
  
  --primary: hsl(217, 91%, 60%);
  --primary-glow: hsla(217, 91%, 60%, 0.35);
  --success: hsl(142, 72%, 49%);
  --success-glow: hsla(142, 72%, 49%, 0.3);
  --warning: hsl(38, 92%, 50%);
  
  --gradient-main: linear-gradient(135deg, hsl(217, 91%, 60%) 0%, hsl(263, 84%, 55%) 100%);
  --gradient-hover: linear-gradient(135deg, hsl(217, 91%, 65%) 0%, hsl(263, 84%, 60%) 100%);
  --gradient-accent: linear-gradient(135deg, hsl(142, 72%, 49%) 0%, hsl(174, 86%, 42%) 100%);
  
  /* Animasyon Sabitleri */
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
}

/* Genel Sıfırlama ve Temel Kurallar */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Arka Plan Dekoratif Işıklar (Glowing Blobs) */
.glowing-bg {
  position: fixed;
  width: 100vw;
  height: 100vh;
  top: 0;
  left: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.glowing-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
}

.blob-1 {
  width: 500px;
  height: 500px;
  background: var(--primary);
  top: -10%;
  right: -5%;
  animation: float 20s infinite alternate;
}

.blob-2 {
  width: 400px;
  height: 400px;
  background: hsl(263, 84%, 55%);
  bottom: 10%;
  left: -5%;
  animation: float 15s infinite alternate-reverse;
}

@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(50px, 40px) scale(1.1); }
}

/* Sayfa Konteyneri */
.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem 1.5rem;
}

/* Header Tasarımı */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--gradient-main);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px var(--primary-glow);
}

.logo-icon svg {
  width: 24px;
  height: 24px;
  fill: var(--text-main);
}

.logo-text {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-main);
}

.logo-text span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-badge {
  background: hsla(142, 72%, 49%, 0.1);
  border: 1px solid var(--success-glow);
  color: var(--success);
  padding: 0.4rem 0.8rem;
  border-radius: 99px;
  font-size: 0.85rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.header-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px var(--success);
}

/* Ana Bölüm (Hero) */
.hero-section {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 5rem;
}

.hero-content h1 {
  font-family: 'Outfit', sans-serif;
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -1.5px;
}

.hero-content h1 span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 580px;
}

/* İndirme Butonu ve Detayları */
.download-actions {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1.1rem 2.2rem;
  font-family: 'Outfit', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-main);
  background: var(--gradient-main);
  border: none;
  border-radius: 16px;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-smooth);
  box-shadow: 0 10px 30px var(--primary-glow);
  position: relative;
  overflow: hidden;
  max-width: 320px;
}

.btn-download::after {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 200%;
  height: 100%;
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.15), transparent);
  transform: skewX(-25deg);
  transition: 0.75s;
}

.btn-download:hover::after {
  left: 125%;
}

.btn-download:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px var(--primary-glow);
  background: var(--gradient-hover);
}

.btn-download:active {
  transform: translateY(-1px);
}

.btn-download svg {
  width: 28px;
  height: 28px;
}

.file-info {
  display: flex;
  gap: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.info-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.info-item svg {
  width: 16px;
  height: 16px;
  stroke: var(--text-muted);
  fill: none;
}

/* Sağ Bölüm: QR Kod Kartı */
.qr-card-container {
  display: flex;
  justify-content: center;
}

.qr-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 28px;
  padding: 2.5rem;
  width: 100%;
  max-width: 340px;
  text-align: center;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  transition: var(--transition-smooth);
  position: relative;
}

.qr-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 28px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.qr-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-focus);
  box-shadow: 0 30px 50px rgba(37, 99, 235, 0.15);
}

.qr-wrapper {
  background: white;
  padding: 1.25rem;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 1.5rem;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  transition: var(--transition-smooth);
}

.qr-wrapper canvas {
  display: block;
}

.qr-card h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.qr-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Alt Bölüm: Kurulum Talimatları */
.instructions-section {
  margin-top: 2rem;
  padding-top: 5rem;
  border-top: 1px solid var(--border-light);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* Adım Kartları Düzeni */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 24px;
  padding: 2.5rem;
  position: relative;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition-smooth);
}

.step-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 24px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.step-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-focus);
  background: var(--bg-card-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.step-badge {
  position: absolute;
  top: -1.25rem;
  left: 2.5rem;
  background: var(--gradient-main);
  color: var(--text-main);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.step-icon-wrapper {
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  color: var(--primary);
  transition: var(--transition-smooth);
}

.step-card:hover .step-icon-wrapper {
  background: var(--primary-glow);
  color: var(--text-main);
  border-color: var(--primary);
}

.step-icon-wrapper svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

.step-card h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.step-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.step-image-container {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-light);
  background: hsla(224, 71%, 4%, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: var(--transition-smooth);
}

.step-screenshot {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition-smooth);
}

.step-card:hover .step-image-container {
  border-color: var(--border-focus);
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.1);
}

.step-card:hover .step-screenshot {
  transform: scale(1.03);
}

footer a {
  transition: var(--transition-fast);
}

footer a:hover {
  color: hsl(217, 91%, 70%) !important;
  text-shadow: 0 0 8px var(--primary-glow);
}

/* Bilgi Kutusu */
.info-box {
  margin-top: 3.5rem;
  background: rgba(38, 92, 50, 0.05);
  border: 1px solid rgba(142, 72, 49, 0.2);
  border-radius: 20px;
  padding: 1.5rem 2rem;
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.info-box-icon {
  color: var(--success);
  flex-shrink: 0;
}

.info-box-icon svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

.info-box-content h4 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--success);
}

.info-box-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Footer Tasarımı */
footer {
  margin-top: 6rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Responsive Kurallar */
@media (max-width: 992px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: 3rem;
  }
  
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  
  .download-actions {
    align-items: center;
  }
  
  .file-info {
    justify-content: center;
  }
  
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .step-card {
    padding: 2rem;
  }
  
  .step-badge {
    left: 2rem;
  }
}

@media (max-width: 576px) {
  .hero-content h1 {
    font-size: 2.25rem;
  }
  
  header {
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2.5rem;
  }
  
  .btn-download {
    width: 100%;
    max-width: none;
  }
  
  .file-info {
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
  }
}