*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: "Cormorant Garamond", serif;
  background: #000;
  color: #fff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

/* ── header ── */
header {
  width: 100%;
  padding: 4rem 2rem 3rem;
  text-align: center;
  position: relative;
}

header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(24rem, 60%);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
}

.feather-icon {
  width: 2.5rem;
  height: 2.5rem;
  margin-top: 1.2rem;
  opacity: 0;
  transform: translateY(-20rem) rotate(-15deg);
  animation: featherIn 3s cubic-bezier(0.22, 1, 0.36, 1) 0.6s forwards;
}

.feather-icon.glow {
  animation: featherIn 3s cubic-bezier(0.22, 1, 0.36, 1) 0.6s forwards,
             goldenGlow 2s ease forwards;
}

@keyframes goldenGlow {
  0% {
    filter: none;
  }
  25% {
    filter: brightness(1.8) drop-shadow(0 0 6px rgba(255, 210, 80, 0.9)) drop-shadow(0 0 20px rgba(255, 190, 50, 0.5));
  }
  50% {
    filter: brightness(1.2) sepia(0.6) hue-rotate(5deg) saturate(3) drop-shadow(0 0 10px rgba(255, 180, 40, 0.6));
  }
  100% {
    filter: brightness(0.4) sepia(1) hue-rotate(-10deg) saturate(10);
  }
}

@keyframes featherIn {
  0% {
    opacity: 0;
    transform: translateY(-20rem) rotate(-15deg);
  }
  15% {
    opacity: 1;
  }
  50% {
    transform: translateY(-0.5rem) rotate(3deg);
  }
  75% {
    transform: translateY(0.15rem) rotate(-1deg);
  }
  100% {
    opacity: 0.7;
    transform: translateY(0) rotate(0deg);
  }
}

h1 {
  margin: 0;
  font-size: 2.4rem;
  font-weight: 300;
  text-transform: lowercase;
  letter-spacing: 0.12em;
  opacity: 0;
  animation: fadeUp 1s ease 0.1s forwards;
}

.subtitle {
  font-size: 1.05rem;
  font-weight: 300;
  font-style: italic;
  color: rgba(255,255,255,0.4);
  margin: 0.4rem 0 0;
  letter-spacing: 0.15em;
  opacity: 0;
  animation: fadeUp 1s ease 0.3s forwards;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(0.6rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── main content ── */
main {
  width: min(28rem, 100%);
  padding: 2rem 2rem 5rem;
}

/* ── concert section ── */
.concert {
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards;
}

.concert-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 1.2rem;
}

.concert-name {
  font-size: 1.4rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  color: #fff;
  margin: 0;
}

.concert-date {
  font-size: 0.85rem;
  font-weight: 300;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

/* ── song list ── */
ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

li {
  position: relative;
}

li + li {
  margin-top: 0.15rem;
}

a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  display: block;
  padding: 0.65rem 0.8rem;
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  border-left: 2px solid transparent;
  transition: all 0.3s ease;
  position: relative;
}

a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0.8rem;
  right: 0;
  height: 1px;
  background: rgba(255,255,255,0.06);
}

a:hover,
a:focus {
  color: #fff;
  border-left-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.03);
}

a:hover::after {
  background: rgba(255,255,255,0.1);
}

.composer {
  color: rgba(255,255,255,0.35);
  font-weight: 300;
}

/* ── empty state ── */
.empty {
  color: rgba(255,255,255,0.25);
  font-size: 1.2rem;
  font-style: italic;
  text-align: center;
  margin-top: 3rem;
}

/* ── tools nav ── */
.tools {
  text-align: center;
  padding: 1rem 2rem 0;
}

.tools a {
  font-size: 0.95rem;
  font-weight: 300;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.06em;
  border-left: none;
  padding: 0;
}

.tools a::after {
  display: none;
}

.tools a:hover {
  color: rgba(255,255,255,0.6);
  background: none;
}

/* ── footer ── */
footer {
  width: 100%;
  text-align: center;
  padding: 0 2rem 2.5rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.15);
  letter-spacing: 0.1em;
}

/* ── responsive ── */
@media (min-width: 600px) {
  header {
    padding: 5rem 2rem 3.5rem;
  }

  h1 {
    font-size: 2.8rem;
  }
}