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

body {
  font-family: "Inter", Arial, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

/* ANIMATED BACKGROUND */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    #0f172a 0%,
    #1e3c72 25%,
    #2a5298 50%,
    #4b8cff 75%,
    #0f172a 100%
  );
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
  z-index: -2;
  pointer-events: none;
}

/* ANIMATED BLOBS */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 50%, rgba(75, 140, 255, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
  animation: blobMove 20s ease-in-out infinite;
  z-index: -1;
  pointer-events: none;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  25% {
    background-position: 50% 100%;
  }
  50% {
    background-position: 100% 50%;
  }
  75% {
    background-position: 50% 0%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes blobMove {
  0% {
    transform: translateY(0px) scale(1);
  }
  25% {
    transform: translateY(-50px) scale(1.1);
  }
  50% {
    transform: translateY(0px) scale(1);
  }
  75% {
    transform: translateY(50px) scale(0.9);
  }
  100% {
    transform: translateY(0px) scale(1);
  }
}

/* NAVIGATION BAR */
.navbar {
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(31, 41, 55, 0.5);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 0;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
}

/* NAV LEFT - Home & About */
.nav-left {
  display: flex;
  list-style: none;
  gap: 40px;
}

.nav-link {
  color: #94a3b8;
  text-decoration: none;
  font-weight: 500;
  font-size: 16px;
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #4b8cff, #2563eb);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover,
.nav-link.active {
  color: #4b8cff;
}

/* NAV CENTER - Logo + Text */
.nav-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex: 1;
}

.logo-icon {
  width: 50px;
  height: 50px;
  filter: drop-shadow(0 4px 12px rgba(96, 165, 250, 0.3));
}

.nav-center h2 {
  font-size: 22px;
  font-weight: bold;
  background: linear-gradient(135deg, #4b8cff, #2563eb);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.5px;
  margin: 0;
}

/* NAV RIGHT - Login */
.nav-right {
  display: flex;
  justify-content: flex-end;
}

.nav-btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
}

.login-btn {
  background: rgba(75, 140, 255, 0.1);
  color: #4b8cff;
  border: 1.5px solid #4b8cff;
}

.login-btn:hover {
  background: #4b8cff;
  color: white;
  box-shadow: 0 0 20px rgba(75, 140, 255, 0.5);
  transform: scale(1.05);
}

/* CONTAINER */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
  z-index: 2;
}

/* ===== HOME SECTION ===== */
.hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 90vh;
  padding: 60px 0;
  gap: 80px;
}

.hero-content {
  flex: 1;
  z-index: 2;
}

.hero-content h1 {
  font-size: 52px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero-content p {
  font-size: 20px;
  color: #cbd5e1;
  margin-bottom: 40px;
  line-height: 1.6;
}

.hero-illustration {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2;
}

.girl-avatar {
  position: relative;
  width: 360px;
  height: 360px;
  animation: floatUp 3s ease-in-out infinite;
}

.avatar-circle {
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.18), transparent 45%),
    linear-gradient(145deg, rgba(75, 140, 255, 0.28), rgba(139, 92, 246, 0.22));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  border: 2px solid rgba(191, 219, 254, 0.45);
  box-shadow:
    0 30px 60px rgba(15, 23, 42, 0.35),
    0 0 60px rgba(96, 165, 250, 0.28),
    inset 0 0 30px rgba(191, 219, 254, 0.12);
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: 50%;
  display: block;
  box-shadow:
    0 16px 32px rgba(15, 23, 42, 0.32),
    inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

@keyframes floatUp {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* ===== ABOUT SECTION ===== */
.about {
  padding: 100px 40px;
  text-align: center;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
}

/* ABOUT GRADIENT BACKGROUND */
.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    #1a0033 0%,
    #2d1b69 15%,
    #4a2a8f 30%,
    #6b3fa0 45%,
    #8b4fa8 60%,
    #a85fa8 75%,
    #c27a9d 100%
  );
  background-size: 400% 400%;
  animation: purplePinkGlow 20s ease infinite;
  z-index: 0;
}

@keyframes purplePinkGlow {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* ABOUT GLOWING LIGHT EFFECT */
.about::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 30% 30%, rgba(200, 150, 255, 0.25) 0%, transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(255, 100, 150, 0.2) 0%, transparent 50%);
  z-index: 1;
  pointer-events: none;
}

/* ABOUT CONTENT */
.about h2 {
  font-size: 48px;
  margin-bottom: 30px;
  color: #ffffff;
  font-weight: 700;
  position: relative;
  z-index: 2;
}

.about p {
  font-size: 18px;
  color: #f0e0ff;
  max-width: 900px;
  margin: 20px auto;
  line-height: 1.8;
  position: relative;
  z-index: 2;
  background: rgba(50, 20, 100, 0.3);
  padding: 20px 30px;
  border-radius: 15px;
  border: 1px solid rgba(200, 150, 255, 0.2);
  backdrop-filter: blur(10px);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .navbar {
    padding: 14px 0 10px;
  }

  .nav-container {
    padding: 0 20px;
    flex-wrap: wrap;
    gap: 10px;
  }

  .nav-left {
    flex: 0 1 auto;
    gap: 20px;
    align-items: center;
  }

  .nav-center {
    flex: 1 1 100%;
    order: -1;
    justify-content: center;
  }

  .nav-right {
    flex: 0 1 auto;
    justify-content: flex-end;
    margin-left: auto;
  }

  .nav-btn {
    padding: 8px 16px;
    font-size: 13px;
  }

  .nav-link {
    font-size: 15px;
  }

  .hero {
    flex-direction: column;
    gap: 40px;
    padding: 40px 0;
  }

  .hero-content h1 {
    font-size: 36px;
  }

  .hero-content p {
    font-size: 16px;
  }

  .girl-avatar {
    width: 240px;
    height: 240px;
  }

  .about {
    padding: 60px 20px;
  }

  .about h2 {
    font-size: 32px;
  }

  .about p {
    font-size: 16px;
  }
}

.mobile-hero {
  padding: 30px 20px;
  text-align: center;
  color: white;
}

.hero-logo {
  width: 70px;
  margin-bottom: 15px;
}

.hero-title {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 10px;
}

.hero-sub {
  font-size: 14px;
  opacity: 0.85;
  margin-bottom: 25px;
}

.Tip-btn {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #5da9ff;
  background: transparent;
  color: white;
  margin-bottom: 15px;
  font-weight: bold;
}

.get-started-btn {
  display: block;
  text-decoration: none;
  background: #5da9ff;
  padding: 14px;
  border-radius: 8px;
  color: white;
  font-weight: bold;
}

.about-section {
  margin: 15px 0;
  text-align: left;
  font-size: 14px;
  background: rgba(255,255,255,0.05);
  padding: 15px;
  border-radius: 8px;
}

.about-section ul {
  padding-left: 18px;
}

.alone {
  margin-top: 10px;
  font-weight: bold;
  text-align: center;
}

.hidden {
  display: none;
}