:root {
  --bg-1: #f3f7ff;
  --bg-2: #e8fff2;
  --ink: #162338;
  --muted: #5f708d;
  --brand: #0f8f63;
  --brand-2: #0b6f4d;
  --card: rgba(255, 255, 255, 0.84);
  --line: rgba(19, 64, 125, 0.18);
  --danger: #c0392b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Manrope', sans-serif;
  color: var(--ink);
  background:
    radial-gradient(70rem 35rem at -10% -30%, #b7cfff 0%, transparent 70%),
    radial-gradient(70rem 35rem at 110% -20%, #bdfad6 0%, transparent 70%),
    linear-gradient(140deg, var(--bg-1) 0%, var(--bg-2) 100%);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}

.card {
  width: 100%;
  max-width: 780px;
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  background: var(--card);
  backdrop-filter: blur(10px);
  box-shadow: 0 18px 70px rgba(15, 47, 89, 0.15);
  padding: 2rem;
  animation: reveal 450ms ease;
}

.kicker {
  margin: 0;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: var(--brand);
  font-weight: 800;
}

h1 {
  margin: 0.45rem 0 0;
  font-size: clamp(1.75rem, 4vw, 2.7rem);
  line-height: 1.05;
}

.subtitle {
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.uploader {
  margin-top: 1.6rem;
  display: grid;
  gap: 1rem;
}

.dropzone {
  display: block;
  border: 2px dashed var(--line);
  border-radius: 1rem;
  padding: 2rem 1rem;
  text-align: center;
  background: rgba(255, 255, 255, 0.64);
  transition: 220ms ease;
  cursor: pointer;
}

.dropzone:hover,
.dropzone.drag {
  border-color: var(--brand);
  transform: translateY(-1px);
  background: #ffffff;
}

.dropzone input {
  display: none;
}

.drop-title {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 700;
}

.drop-muted {
  margin: 0.4rem 0 0;
  color: var(--muted);
}

.selected-file {
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: rgba(255, 255, 255, 0.7);
  padding: 0.75rem 0.9rem;
  font-size: 0.94rem;
}

button {
  border: none;
  border-radius: 0.85rem;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
  color: #fff;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  padding: 0.95rem 1rem;
  cursor: pointer;
  transition: 180ms ease;
}

button:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.status {
  margin: 0.7rem 0 0;
  min-height: 1.3rem;
  font-size: 0.94rem;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 680px) {
  .card {
    padding: 1.2rem;
    border-radius: 1.1rem;
  }

  .dropzone {
    padding: 1.4rem 0.8rem;
  }
}