:root {
  --sky: #dfeaf7;
  --sky-deep: #a9c6e8;
  --denim: #4d6f9c;
  --ink: #2f3f57;
  --cream: #fffaf1;
  --blush: #f3c9d4;
  --cloud: #ffffff;
  --shadow: 0 10px 30px rgba(77, 111, 156, 0.18);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Montserrat', sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 15% 20%, #eef5fc 0%, transparent 45%), radial-gradient(circle at 85% 10%, #d9e9fa 0%, transparent 40%), linear-gradient(180deg, var(--sky) 0%, #cfe1f3 40%, #bcd7ef 100%);
  overflow-x: hidden;
}
.ambient { position: fixed; inset: 0; pointer-events: none; z-index: 1; overflow: hidden; }
.paw { position: absolute; opacity: .18; animation: float 7s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0) rotate(0deg); } 50% { transform: translateY(-18px) rotate(6deg); } }
#lock {
  position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(180deg, #cfe1f3 0%, #a9c6e8 100%);
  transition: opacity .8s ease, visibility .8s ease;
}
#lock.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.burrow { background: var(--cloud); border-radius: 32px; padding: 48px 40px; max-width: 380px; width: 88%; text-align: center; box-shadow: var(--shadow); position: relative; }
.burrow .ears { display: flex; justify-content: center; gap: 14px; margin-bottom: -6px; }
.ear { width: 22px; height: 56px; background: linear-gradient(180deg, #fff, var(--sky-deep)); border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%; border: 2px solid var(--denim); }
.ear:nth-child(1) { transform: rotate(-12deg); }
.ear:nth-child(2) { transform: rotate(12deg); }
.burrow h1 { font-family: 'Playfair Display', serif; font-size: 2.4rem; margin: 8px 0 4px; color: var(--denim); }
.burrow p { font-size: .95rem; color: #5b6c85; margin: 0 0 22px; }
#lock-form { display: flex; flex-direction: column; gap: 14px; }
#password { text-align: center; font-family: 'Montserrat', sans-serif; font-size: 1.4rem; letter-spacing: 2px; padding: 14px; border-radius: 16px; border: 2px solid var(--sky-deep); outline: none; background: #f6faff; color: var(--denim); transition: border-color .2s; }
#password:focus { border-color: var(--denim); }
#lock-btn { border: none; padding: 13px; border-radius: 16px; background: var(--denim); color: white; font-family: 'Montserrat', sans-serif; font-weight: 600; font-size: 1rem; cursor: pointer; transition: transform .15s, background .2s; }
#lock-btn:hover { background: #3d5a81; transform: translateY(-2px); }
#hint { font-size: .8rem; color: #8ea0ba; margin-top: 14px; }
.shake { animation: shake .45s; }
@keyframes shake { 10%, 90% { transform: translateX(-4px); } 20%, 80% { transform: translateX(6px); } 30%, 50%, 70% { transform: translateX(-9px); } 40%, 60% { transform: translateX(9px); } }
#error-msg { color: #c96b7f; font-size: .85rem; min-height: 18px; margin: 0; }
#site { position: relative; z-index: 2; opacity: 0; transition: opacity 1s ease; }
#site.show { opacity: 1; }
section { max-width: 760px; margin: 0 auto; padding: 70px 24px; position: relative; }
.hero { text-align: center; padding-top: 90px; }
.hero .bunny-hero { width: 150px; margin-bottom: 6px; animation: bob 4s ease-in-out infinite; }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.eyebrow { font-family: 'Montserrat', sans-serif; font-size: .72rem; letter-spacing: 3px; text-transform: uppercase; color: var(--denim); opacity: .7; }
.hero h1 { font-family: 'Playfair Display', serif; font-size: 3.6rem; color: var(--denim); margin: 6px 0 10px; line-height: 1.05; }
.hero p.sub { color: #5b6c85; font-size: 1.05rem; max-width: 440px; margin: 0 auto; }
.divider { display: flex; justify-content: center; align-items: center; gap: 10px; margin: 10px auto 0; opacity: .5; }
.divider span { font-size: 1.1rem; }
.sec-label { font-family: 'Montserrat', sans-serif; font-size: .7rem; letter-spacing: 3px; text-transform: uppercase; color: var(--denim); opacity: .65; text-align: center; margin-bottom: 6px; }
.sec-title { font-family: 'Playfair Display', serif; font-size: 2.4rem; color: var(--denim); text-align: center; margin: 0 0 30px; }
.music-card { background: var(--cloud); border-radius: 28px; padding: 30px; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.music-card::before { content: "🐇"; position: absolute; top: -14px; right: 18px; font-size: 2.6rem; transform: rotate(12deg); opacity: .9; }
.music-note { font-family: 'Playfair Display', serif; color: var(--denim); font-size: 1.2rem; text-align: center; margin: 16px 0 0; }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.g-item { aspect-ratio: 1/1; border-radius: 20px; cursor: pointer; position: relative; overflow: hidden; box-shadow: 0 6px 16px rgba(77, 111, 156, 0.2); border: 3px solid white; display: flex; align-items: center; justify-content: center; transition: transform 0.25s ease; }
.g-item:hover { transform: translateY(-6px) rotate(-1deg); }
.g-item .tag { position: absolute; bottom: 6px; left: 0; right: 0; text-align: center; font-size: 0.6rem; color: white; font-family: 'Poppins', sans-serif; letter-spacing: 0.5px; text-shadow: 0 1px 3px rgba(0, 0, 0, 0.35); pointer-events: none; }
#lightbox { position: fixed; inset: 0; background: rgba(47, 63, 87, 0.75); display: none; align-items: center; justify-content: center; z-index: 60; padding: 24px; }
#lightbox.open { display: flex; }
.lb-card { background: var(--cloud); border-radius: 24px; max-width: 420px; width: 100%; padding: 24px; text-align: center; position: relative; }
.lb-caption { font-family: 'Playfair Display', serif; font-size: 1.5rem; color: var(--denim); margin: 16px 0 0; }
.lb-close { position: absolute; top: 14px; right: 16px; background: none; border: none; font-size: 1.3rem; cursor: pointer; color: #8ea0ba; }
.letter-wrap { display: flex; justify-content: center; }
.envelope { background: var(--cream); border-radius: 6px; box-shadow: var(--shadow); width: 100%; max-width: 520px; padding: 44px 38px 44px 70px; position: relative; border-left: 2px solid rgba(169, 198, 232, 0.5); }
.seal { width: 46px; height: 46px; background: var(--denim); border-radius: 50%; color: white; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; margin: 0 auto 18px; box-shadow: 0 4px 10px rgba(77, 111, 156, 0.4); }
.letter-text { font-family: 'Lora', serif; font-size: 1.1rem; line-height: 1.7; color: #3a4a63; margin: 0; position: relative; text-align: justify; padding-right: 10px; }
.signature { font-family: 'Lora', serif; font-style: italic; font-size: 1.2rem; color: var(--denim); margin-top: 15px; }
footer { text-align: center; padding: 40px 20px 60px; font-family: 'Caveat', cursive; font-size: 1.3rem; color: var(--denim); opacity: .8; }
@media (max-width: 480px) {
  .hero h1 { font-size: 2.8rem; }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .envelope { padding: 32px 22px 32px 40px; }
}