:root {
  --ink: #f7fbff;
  --ink-soft: #d4e5f9;
  --bg-1: #032233;
  --bg-2: #083d57;
  --card: rgba(5, 25, 38, 0.66);
  --line: rgba(187, 220, 255, 0.3);
  --accent: #f4b400;
  --accent-2: #1de0ca;
  --error: #ff8a8a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: linear-gradient(160deg, var(--bg-1), #043149 42%, var(--bg-2));
  font-family: "Avenir Next", "Trebuchet MS", "Segoe UI", sans-serif;
}

.aurora {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 18% 14%, rgba(29, 224, 202, 0.22), transparent 38%),
    radial-gradient(circle at 90% 85%, rgba(244, 180, 0, 0.16), transparent 34%);
  animation: drift 10s ease-in-out infinite alternate;
}

@keyframes drift {
  from {
    transform: translateY(0px);
  }
  to {
    transform: translateY(-14px);
  }
}

.shell {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 16px 30px;
  display: grid;
  gap: 14px;
}

.hero {
  display: grid;
  gap: 8px;
}

.brand {
  width: 240px;
  max-width: 90%;
}

.subtitle {
  margin: 0;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  backdrop-filter: blur(16px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18);
}

.label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: #a8d5ff;
}

h1 {
  margin: 4px 0;
  font-size: 22px;
}

.hint {
  margin: 0;
  color: var(--ink-soft);
}

.dropzone {
  border: 1px dashed #8dc4ff;
  border-radius: 14px;
  padding: 18px;
  display: grid;
  gap: 4px;
  background: rgba(2, 18, 30, 0.4);
}

.dropzone span {
  font-weight: 600;
}

.dropzone small {
  color: #bdd8f8;
}

input[type="file"] {
  color: var(--ink);
  font-size: 13px;
}

button {
  margin-top: 12px;
  width: 100%;
  border: 0;
  border-radius: 12px;
  padding: 13px;
  color: #132332;
  font-size: 15px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), #ffd367);
}

button:disabled {
  opacity: 0.55;
}

.feed ul,
#uploadFeed {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.feed-item {
  border: 1px solid rgba(138, 193, 255, 0.38);
  background: rgba(1, 14, 22, 0.44);
  border-radius: 10px;
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.feed-item strong {
  display: block;
  font-size: 13px;
}

.feed-item small {
  color: #bcd6f7;
}

.badge {
  font-size: 11px;
  border-radius: 999px;
  padding: 4px 9px;
  background: linear-gradient(135deg, #1de0ca, #75ffea);
  color: #04312d;
  font-weight: 700;
}

.badge.error {
  background: linear-gradient(135deg, #ff8a8a, #ffc2c2);
  color: #5e1f1f;
}

@media (min-width: 720px) {
  .shell {
    padding-top: 32px;
  }

  .card {
    padding: 18px;
  }

  h1 {
    font-size: 26px;
  }
}