:root {
  --bg-main: #0c0d10;
  --bg-card: rgba(22, 24, 29, 0.75);
  --bg-card-hover: rgba(30, 33, 41, 0.9);
  --yt-red: #FF0000;
  --yt-red-glow: rgba(255, 0, 0, 0.45);
  --yt-red-subtle: rgba(255, 0, 0, 0.12);
  --cat-gold: #FFB703;
  --cat-pink: #FF8FA3;
  --text-main: #F1F1F1;
  --text-muted: #AAAAAA;
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 0, 0, 0.35);
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* Arka Plan Atmosferik Parlamalar & Mesh Grid */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: -1;
}

.bg-glow-1 {
  position: fixed;
  top: -120px;
  right: -80px;
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, rgba(255, 0, 51, 0.35) 0%, rgba(157, 78, 221, 0.15) 50%, transparent 70%);
  filter: blur(100px);
  z-index: -2;
  pointer-events: none;
}

.bg-glow-2 {
  position: fixed;
  bottom: 0%;
  left: -120px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(255, 183, 3, 0.18) 0%, rgba(0, 255, 136, 0.08) 50%, transparent 70%);
  filter: blur(120px);
  z-index: -2;
  pointer-events: none;
}

/* Navigasyon Barı */
.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(12, 13, 16, 0.82);
  border-bottom: 1px solid var(--border-glass);
  z-index: 1000;
  padding: 0.85rem 2rem;
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 700;
  font-size: 1.35rem;
}

.nav-logo {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  box-shadow: 0 4px 12px var(--yt-red-glow);
  transition: var(--transition-smooth);
}

.nav-logo:hover {
  transform: rotate(5deg) scale(1.08);
}

.nav-tag {
  font-size: 0.72rem;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  background: var(--yt-red-subtle);
  color: var(--yt-red);
  border: 1px solid rgba(255, 0, 0, 0.3);
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

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

.lang-switch-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition-smooth);
}

.lang-switch-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--cat-gold);
  color: var(--cat-gold);
}

/* HERO SECTION */
.hero {
  max-width: 1280px;
  margin: 0 auto;
  padding: 5rem 2rem 3rem 2rem;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  min-height: calc(85vh - 70px);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(255, 0, 0, 0.08);
  border: 1px solid rgba(255, 0, 0, 0.28);
  padding: 0.4rem 1.1rem;
  border-radius: 50px;
  font-size: 0.88rem;
  color: #FFA5A5;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 20px rgba(255, 0, 0, 0.12);
}

.hero-badge .paw-icon {
  font-size: 1.1rem;
  animation: pawWiggle 2s infinite ease-in-out;
}

@keyframes pawWiggle {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(-15deg); }
  75% { transform: rotate(15deg); }
}

.hero-title {
  font-size: 3.2rem;
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1.2rem;
}

.hero-title span.highlight {
  background: linear-gradient(135deg, #FF3333 0%, #FFB703 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2.2rem;
  max-width: 600px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-bottom: 2.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
  color: #FFFFFF;
  padding: 0.95rem 1.8rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  box-shadow: 0 8px 24px var(--yt-red-glow);
  transition: var(--transition-smooth);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 30px rgba(255, 0, 0, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  padding: 0.95rem 1.8rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  border: 1px solid var(--border-glass);
  transition: var(--transition-smooth);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-3px);
}

.hero-stats {
  display: flex;
  gap: 2rem;
  border-top: 1px solid var(--border-glass);
  padding-top: 1.8rem;
}

.stat-item h4 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #FFFFFF;
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* HERO SAĞ: ULTRA-MODERN UYGULAMA MOCKUP & MASKOT */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 1000px;
}

.hero-app-mockup {
  position: relative;
  width: 100%;
  max-width: 520px;
  background: rgba(18, 20, 27, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 18px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7), 0 0 40px rgba(255, 0, 0, 0.2);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow: hidden;
  transform: rotateY(-6deg) rotateX(4deg);
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.5s ease;
}

.hero-app-mockup:hover {
  transform: rotateY(0deg) rotateX(0deg) translateY(-8px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.8), 0 0 60px rgba(255, 0, 51, 0.35);
  border-color: rgba(255, 0, 51, 0.4);
}

.mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.1rem;
  background: rgba(12, 14, 20, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.mockup-dots .dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  display: inline-block;
}

.mockup-dots .dot-red { background: #ff5f56; }
.mockup-dots .dot-yellow { background: #ffbd2e; }
.mockup-dots .dot-green { background: #27c93f; }

.mockup-title {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.mockup-badge {
  font-size: 0.7rem;
  font-family: monospace;
  background: rgba(255, 0, 51, 0.15);
  color: var(--yt-red);
  border: 1px solid rgba(255, 0, 51, 0.3);
  padding: 2px 7px;
  border-radius: 6px;
  font-weight: 700;
}

.mockup-screen {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9.5;
  background: #0a0b10;
  overflow: hidden;
}

.mockup-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.hero-app-mockup:hover .mockup-img {
  transform: scale(1.03);
}

.mockup-overlay-badge {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(10, 11, 16, 0.88);
  border: 1px solid rgba(255, 183, 3, 0.4);
  color: var(--cat-gold);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
}

.badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00ff88;
  box-shadow: 0 0 8px #00ff88;
  animation: pulseGreen 1.8s infinite;
}

@keyframes pulseGreen {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

/* Kedi Maskotu Mini Floating Rozet */
.mascot-container.mini-mascot {
  position: absolute;
  bottom: -25px;
  left: -25px;
  width: 130px;
  height: 130px;
  z-index: 10;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.mascot-container.mini-mascot:hover {
  transform: scale(1.1) rotate(-4deg);
}

.mascot-container.mini-mascot .mascot-img {
  width: 110px;
  height: 110px;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.7));
}

.mascot-container.mini-mascot .cat-bubble {
  top: -16px;
  right: -30px;
  padding: 0.45rem 0.8rem;
  font-size: 0.75rem;
  white-space: nowrap;
}

/* Kedi Konuşma Balonu */
.cat-bubble {
  position: absolute;
  top: -20px;
  right: -20px;
  background: rgba(26, 28, 35, 0.95);
  border: 1px solid var(--cat-gold);
  border-radius: 16px;
  padding: 0.7rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--cat-gold);
  box-shadow: 0 6px 20px rgba(0,0,0,0.5);
  z-index: 5;
  animation: bounceBubble 3s infinite ease-in-out;
}

@keyframes bounceBubble {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* BÖLÜM ORTAK STİLLERİ */
.section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--yt-red);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.6rem;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 0.8rem;
}

.section-desc {
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* ÖZELLİK KARTLARI (GRID) */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.8rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--yt-red), transparent);
  opacity: 0;
  transition: var(--transition-smooth);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

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

.feature-icon-box {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--yt-red-subtle);
  border: 1px solid rgba(255, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.4rem;
  transition: var(--transition-smooth);
}

.feature-card:hover .feature-icon-box {
  background: var(--yt-red);
  transform: scale(1.1) rotate(6deg);
  box-shadow: 0 6px 16px var(--yt-red-glow);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
}

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

/* EKRAN GÖRÜNTÜLERİ GALERİSİ & SEKMELER */
.gallery-section {
  background: linear-gradient(180deg, transparent 0%, rgba(20, 22, 28, 0.4) 50%, transparent 100%);
  padding: 4rem 0;
}

.gallery-tabs {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  padding: 0.65rem 1.3rem;
  border-radius: 50px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.tab-btn:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.09);
}

.tab-btn.active {
  background: var(--yt-red);
  color: #FFFFFF;
  border-color: var(--yt-red);
  box-shadow: 0 4px 16px var(--yt-red-glow);
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 1.8rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.screenshot-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  group: true;
}

.screenshot-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 0, 0, 0.4);
  box-shadow: 0 16px 36px rgba(0,0,0,0.6);
}

.screenshot-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #111;
}

.screenshot-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.screenshot-card:hover .screenshot-img-wrap img {
  transform: scale(1.04);
}

.screenshot-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-smooth);
}

.screenshot-card:hover .screenshot-overlay {
  opacity: 1;
}

.zoom-btn {
  background: var(--yt-red);
  color: white;
  border: none;
  padding: 0.6rem 1rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: 0 4px 14px rgba(0,0,0,0.5);
}

.screenshot-info {
  padding: 1.2rem 1.4rem;
}

.screenshot-info h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.screenshot-info p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* KLAVYE KISAYOLLARI TABLOSU */
.shortcuts-section {
  max-width: 1080px;
  margin: 0 auto;
}

.shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
}

.shortcut-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1rem 1.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

.shortcut-item:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.18);
}

.key-badge {
  background: #1e2029;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 3px 0 rgba(0,0,0,0.5);
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  font-family: monospace;
  font-weight: 700;
  font-size: 0.88rem;
  color: #FFFFFF;
}

.shortcut-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* KURULUM & ÇALIŞTIRMA ADIMLARI */
.install-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.install-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  position: relative;
}

.install-card-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}

.install-card-header h3 {
  font-size: 1.35rem;
}

.code-box {
  background: #08090b;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 1rem 1.2rem;
  font-family: monospace;
  font-size: 0.9rem;
  color: #38bdf8;
  margin: 1rem 0;
  overflow-x: auto;
  position: relative;
}

/* FOOTER */
.footer {
  border-top: 1px solid var(--border-glass);
  background: #08090b;
  padding: 4rem 2rem 2rem 2rem;
  margin-top: 5rem;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-brand p {
  color: var(--text-muted);
  max-width: 380px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
  color: #FFFFFF;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.7rem;
}

.footer-col ul li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.footer-col ul li a:hover {
  color: var(--yt-red);
}

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* LIGHTBOX MODAL */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(10px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 2rem;
}

.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.8);
  border: 1px solid var(--border-glass);
}

.lightbox-content img {
  width: 100%;
  height: auto;
  max-height: 85vh;
  display: block;
}

.lightbox-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background: rgba(0,0,0,0.7);
  border: 1px solid rgba(255,255,255,0.2);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  transition: var(--transition-smooth);
  z-index: 10;
}

.lightbox-close:hover {
  background: var(--yt-red);
}

/* RESPONSIVE DÜZENLEME */
@media (max-width: 992px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 3rem;
  }
  .hero-title {
    font-size: 2.6rem;
  }
  .hero-subtitle {
    margin: 0 auto 2rem auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-stats {
    justify-content: center;
  }
  .hero-visual {
    margin-top: 1rem;
  }
  .install-container {
    grid-template-columns: 1fr;
  }
  .footer-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-actions .btn-primary, .hero-actions .btn-secondary {
    width: 100%;
    justify-content: center;
  }
  .mascot-container {
    width: 250px;
    height: 250px;
  }
  .mascot-img {
    width: 200px;
    height: 200px;
  }
}