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

html, body {
  height: 100%;
  font-family: 'Inter', sans-serif;
  background-color: #0b0f14;
  color: #e6e6e6;
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 24px 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
}

.logo {
  font-weight: 600;
  font-size: 20px;
  color: #5cff9a;
}

.navbar nav a {
  margin-left: 32px;
  text-decoration: none;
  color: #b5b5b5;
  font-size: 14px;
}

.navbar nav a:hover {
  color: #ffffff;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 64px;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 820px;
  z-index: 2;
}

.hero h1 {
  font-size: 56px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.hero h1 span {
  color: #5cff9a;
}

.hero p {
  margin-top: 24px;
  font-size: 16px;
  color: #9aa0a6;
  max-width: 520px;
}

/* ===== BUTTONS ===== */
.hero-actions {
  margin-top: 40px;
  display: flex;
  gap: 20px;
}

.btn {
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 14px;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
}

.btn.primary {
  background: #5cff9a;
  color: #0b0f14;
}

.btn.secondary {
  background: transparent;
  border: 1px solid #2a2f36;
  color: #e6e6e6;
}

.btn:hover {
  transform: translateY(-2px);
}

/* ===== AMBIENT GLOW ===== */
.ambient-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(92, 255, 154, 0.15),
    transparent 70%
  );
  top: 50%;
  left: 60%;
  transform: translate(-50%, -50%);
  filter: blur(80px);
  z-index: 1;
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  width: 100%;
  z-index: 2;
}
.hero-media {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}
.image-card {
  background: #0f141a;
  border-radius: 20px;
  padding: 16px;
  border: 1px solid #1f252d;
  max-width: 800px;
  transform: translateY(30px);
}

.image-card img {
  width: 100%;
  border-radius: 14px;
  display: block;
}
.more-btn {
  position: absolute;
  top: -10px;
  right: 0;
  padding: 8px 16px;
  font-size: 13px;
  text-decoration: none;
  color: #5cff9a;
  border: 1px solid rgba(92, 255, 154, 0.3);
  border-radius: 999px;
  background: rgba(11, 15, 20, 0.8);
  backdrop-filter: blur(6px);
}

.more-btn:hover {
  background: rgba(92, 255, 154, 0.15);
}
/* ===== OVERLAY ===== */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 50;
}

/* ===== MODAL ===== */
.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  width: 480px;
  max-width: 90%;
  background: #0f141a;
  border: 1px solid #1f252d;
  border-radius: 16px;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 100;
}

/* Active state */
.overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal.active {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

/* ===== MODAL CONTENT ===== */
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 500;
  color: #5cff9a;
}

.close-btn {
  background: none;
  border: none;
  font-size: 22px;
  color: #9aa0a6;
  cursor: pointer;
}

.close-btn:hover {
  color: #ffffff;
}

.modal-content {
  margin-top: 20px;
  font-size: 15px;
  color: #b5b5b5;
}
.nav {
  display:inline-block
}

/* ===== PHOTO WALL OVERLAY ===== */
.photo-wall-overlay {
  position: fixed;
  display: none;
  inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(6px);
  justify-content: center;
  align-items: center;
  z-index: 999;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.photo-wall-overlay.show {
  display:flex;
  opacity: 1;
  pointer-events: auto;
}
/* ===== MAIN FRAME ===== */
.photo-wall {
  width: 90%;
  max-width: 900px;
  background: linear-gradient(180deg, #1c2f3d, #12202b);
  border: 2px solid #4aa3ff;
  border-radius: 12px;
  box-shadow: 0 0 30px rgba(0, 170, 255, 0.35);
  padding: 16px;
  animation: popIn 0.25s ease;
}

@keyframes popIn {
  from { transform: scale(0.95); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

/* ===== HEADER ===== */
.photo-wall-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.photo-wall-title {
  font-weight: 700;
  letter-spacing: 2px;
  color: #8fd3ff;
}

.photo-wall-close {
  background: none;
  border: none;
  font-size: 26px;
  color: #fff;
  cursor: pointer;
}

/* ===== GRID ===== */
.photo-wall-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.photo-slot {
  background: #0f1b24;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.photo-slot::after {
  content: "+";
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  color: rgba(255,255,255,0.2);
  font-size: 40px;
  pointer-events: none;
}

.photo-slot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (max-width: 768px) {
  /* NAVBAR */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 28px;
  position: relative;
  z-index: 1000;
}
#menu {
  display: none;
  margin-top:8px;
  list-style: none;
  padding: 0;
}

.menu-btn {
  font-size: 28px;
  cursor: pointer;
}
#menu li {
  margin: 6px 0;
}
#menu a:hover {
  color: #ffffff;         /* hover sáng hơn tí */
  text-decoration: underline;
  text-decoration-color: rgba(255,255,255,0.4);
}

/* dropdown */
.dropdown-menu {
  position: absolute;
  top: 42px;
  right: 0;
  background: #0b0f14;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 10px 0;
  min-width: 160px;

  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: 0.25s ease;
}

.dropdown-menu a {
  display: block;
  padding: 10px 18px;
  color: #e5e7eb;
  text-decoration: none;
  font-size: 14px;
}

.dropdown-menu a:hover {
  background: rgba(255,255,255,0.06);
}

/* active */
.dropdown-menu.active {
  display:block;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}


  nav {
    display: none; /* sau này làm hamburger */
    position: absolute;
    top: 60px;
    right: 20px;
    background: #0b0f14;
    padding: 14px 18px;
    border-radius: 12px;
  }
  nav.active {
    display: flex;
  }
.ambient-glow,
.overlay {
  pointer-events: none;
}
  .logo {
    font-size: 18px;
  }

  /* HERO */
  .hero {
    flex-direction: column;
    padding: 80px 20px 40px;
    gap: 32px;
  }

  .hero-content h1 {
    font-size: 42px;
    line-height: 1.1;
  }

  .hero-content p {
    font-size: 14px;
    max-width: 100%;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }

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

  /* IMAGE */
  .hero-media {
    width: 100%;
  }

  .image-card {
    width: 100%;
    max-width: 100%;
  }

  .image-card img {
    width: 100%;
    height: auto;
  }

  .more-btn {
    top: -12px;
    right: 0;
    font-size: 14px;
  }

.photo-wall-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .photo-wall {
    max-height: 85vh;
    overflow-y: auto;
  }
}