:root {
  --pink-50: #fff5f8;
  --pink-100: #ffe4ee;
  --pink-200: #ffc8dc;
  --pink-300: #ffa3c4;
  --pink-400: #ff7aa8;
  --pink-500: #f0568c;
  --pink-600: #d63b74;
  --white: #ffffff;
  --text: #5a2a3d;
  --text-soft: #8c5a6e;
  --shadow: 0 10px 30px rgba(240, 86, 140, 0.18);
  --radius: 22px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Be Vietnam Pro", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 10%, var(--pink-100) 0, transparent 40%),
    radial-gradient(circle at 90% 30%, var(--pink-100) 0, transparent 35%),
    radial-gradient(circle at 20% 90%, var(--pink-100) 0, transparent 40%),
    var(--pink-50);
  line-height: 1.7;
  overflow-x: hidden;
}

/* Chấm bi nền */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(var(--pink-200) 1.5px, transparent 1.5px);
  background-size: 28px 28px;
  opacity: 0.45;
  z-index: -2;
  pointer-events: none;
}

/* ===== Sticker bay ===== */
.floating-stickers {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}
.floating-stickers span {
  position: absolute;
  bottom: -60px;
  animation: floatUp linear infinite;
  opacity: 0.7;
}
@keyframes floatUp {
  0%   { transform: translateY(0) rotate(0deg); opacity: 0; }
  10%  { opacity: 0.7; }
  90%  { opacity: 0.7; }
  100% { transform: translateY(-110vh) rotate(360deg); opacity: 0; }
}

/* ===== Navbar ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 6%;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 2px dashed var(--pink-200);
}
.logo {
  font-family: "Pacifico", cursive;
  font-size: 1.5rem;
  color: var(--pink-500);
  text-decoration: none;
}
.nav-links { display: flex; gap: 8px; }
.nav-links a {
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 999px;
  transition: 0.25s;
}
.nav-links a:hover,
.nav-links a.active {
  background: var(--pink-400);
  color: var(--white);
}
.menu-toggle {
  display: none;
  background: var(--pink-100);
  border: none;
  font-size: 1.4rem;
  color: var(--pink-600);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  cursor: pointer;
}

/* ===== Hero ===== */
.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  gap: 40px;
  padding: 60px 8%;
}
.badge {
  display: inline-block;
  background: var(--white);
  color: var(--pink-500);
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  border: 2px solid var(--pink-200);
  box-shadow: var(--shadow);
}
.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.15;
  margin: 18px 0 10px;
  background: linear-gradient(135deg, var(--pink-600), var(--pink-300));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.typing {
  font-size: 1.3rem;
  color: var(--text-soft);
  font-weight: 500;
  min-height: 2.2em;
}
#typed { color: var(--pink-500); font-weight: 700; }
.cursor { color: var(--pink-400); animation: blink 0.8s infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.btn {
  text-decoration: none;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: 999px;
  transition: 0.25s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--pink-400), var(--pink-500));
  color: var(--white);
  box-shadow: 0 8px 20px rgba(240, 86, 140, 0.35);
}
.btn-primary:hover { transform: translateY(-3px) scale(1.03); }
.btn-outline {
  border: 2px solid var(--pink-400);
  color: var(--pink-500);
  background: var(--white);
}
.btn-outline:hover { background: var(--pink-100); }

.hero-image {
  position: relative;
  justify-self: center;
}
.avatar-frame {
  width: min(360px, 78vw);
  aspect-ratio: 3 / 4;
  border-radius: 180px 180px 30px 30px;
  padding: 10px;
  background: linear-gradient(160deg, var(--white), var(--pink-200));
  box-shadow: var(--shadow), 0 0 0 8px var(--white);
  transform: rotate(-2deg);
}
.avatar-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 70%;
  border-radius: 170px 170px 22px 22px;
  display: block;
}
.sticker {
  position: absolute;
  font-size: 2.6rem;
  filter: drop-shadow(0 4px 6px rgba(240, 86, 140, 0.3));
  animation: bob 3s ease-in-out infinite;
  user-select: none;
}
.s1 { top: -10px; left: -20px; }
.s2 { top: 30%; right: -30px; animation-delay: 0.5s; }
.s3 { bottom: 12%; left: -34px; animation-delay: 1s; font-size: 2.2rem; }
.s4 { bottom: -18px; right: 10%; animation-delay: 1.5s; font-size: 3rem; }
@keyframes bob {
  0%, 100% { transform: translateY(0) rotate(-6deg); }
  50% { transform: translateY(-12px) rotate(6deg); }
}
.sticker-tag {
  position: absolute;
  top: 12%;
  left: -40px;
  background: var(--white);
  color: var(--pink-500);
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 14px;
  border: 2px dashed var(--pink-300);
  transform: rotate(-10deg);
  box-shadow: var(--shadow);
}

/* ===== Sections ===== */
.section { padding: 80px 8%; }
.section-title {
  text-align: center;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  color: var(--pink-600);
  margin-bottom: 44px;
  position: relative;
}
.section-title::after {
  content: "";
  display: block;
  width: 90px;
  height: 6px;
  margin: 12px auto 0;
  border-radius: 6px;
  background: repeating-linear-gradient(90deg, var(--pink-400) 0 12px, transparent 12px 18px);
}

/* About */
.about-card {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
  border: 2px solid var(--pink-100);
}
.about-card p { margin-bottom: 14px; color: var(--text-soft); font-size: 1.05rem; }
.about-card strong { color: var(--pink-500); }
.corner-sticker {
  position: absolute;
  top: -26px;
  right: -14px;
  font-size: 3rem;
  transform: rotate(12deg);
  animation: bob 3.5s ease-in-out infinite;
}
.about-info {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}
.about-info div {
  background: var(--pink-50);
  border: 2px solid var(--pink-200);
  padding: 8px 18px;
  border-radius: 999px;
  font-weight: 600;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  max-width: 1100px;
  margin: 0 auto;
}
.skill-bars, .interests {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 2px solid var(--pink-100);
}
.skills-grid h3 { color: var(--pink-500); margin-bottom: 20px; font-size: 1.3rem; }
.skill { margin-bottom: 18px; }
.skill-head { display: flex; justify-content: space-between; font-weight: 600; margin-bottom: 6px; }
.bar {
  height: 14px;
  background: var(--pink-100);
  border-radius: 999px;
  overflow: hidden;
}
.fill {
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--pink-300), var(--pink-500));
  background-size: 200% 100%;
  transition: width 1.4s cubic-bezier(.2,.8,.2,1);
  position: relative;
}
.fill::after {
  content: "♥";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10px;
  color: var(--white);
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.card {
  background: var(--pink-50);
  border: 2px dashed var(--pink-200);
  border-radius: 18px;
  padding: 18px 8px;
  text-align: center;
  transition: 0.3s;
  cursor: default;
}
.card:hover {
  transform: translateY(-6px) rotate(-2deg);
  background: var(--pink-100);
  border-color: var(--pink-400);
}
.card .emoji { font-size: 2.2rem; display: block; }
.card p { font-weight: 600; margin-top: 6px; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  max-width: 1100px;
  margin: 0 auto;
}
.contact-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px 18px;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  box-shadow: var(--shadow);
  border: 2px solid var(--pink-100);
  transition: 0.3s;
}
.contact-card:not(.disabled):hover {
  transform: translateY(-8px);
  border-color: var(--pink-400);
}
.contact-card .icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 14px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--pink-300), var(--pink-500));
}
.contact-card svg { width: 30px; height: 30px; fill: var(--white); }
.contact-card h3 { color: var(--pink-600); }
.contact-card p { color: var(--text-soft); font-size: 0.92rem; word-break: break-word; min-height: 1.5em; }
.contact-card.disabled { cursor: default; }

/* Footer */
footer {
  text-align: center;
  padding: 30px 16px;
  background: var(--white);
  border-top: 2px dashed var(--pink-200);
  color: var(--text-soft);
}
footer strong { color: var(--pink-500); }

#toTop {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: none;
  font-size: 1.5rem;
  background: var(--white);
  box-shadow: var(--shadow);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: 0.3s;
}
#toTop.show { opacity: 1; pointer-events: auto; }
#toTop:hover { transform: scale(1.1) rotate(-10deg); }

/* Hiệu ứng xuất hiện */
.reveal { opacity: 0; transform: translateY(30px); transition: 0.8s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* Trái tim khi click */
.click-heart {
  position: fixed;
  pointer-events: none;
  font-size: 1.3rem;
  animation: pop 0.9s ease-out forwards;
  z-index: 999;
}
@keyframes pop {
  0% { transform: translate(-50%, -50%) scale(0.5); opacity: 1; }
  100% { transform: translate(-50%, -160%) scale(1.4); opacity: 0; }
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding: 50px 6%; }
  .hero-buttons { justify-content: center; }
  .hero-image { order: -1; }
  .skills-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .menu-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--white);
    padding: 12px 6%;
    border-bottom: 2px dashed var(--pink-200);
    display: none;
  }
  .nav-links.open { display: flex; }
  .section { padding: 60px 5%; }
  .about-card, .skill-bars, .interests { padding: 26px 20px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .sticker-tag { left: -6px; font-size: 0.85rem; }
  .s2 { right: -8px; }
  .s3 { left: -10px; }
}