:root {
  --bg: #f3efe7;
  --panel: rgba(255, 251, 245, 0.92);
  --text: #1e1f1c;
  --muted: #5f6159;
  --accent: #1d5c4f;
  --accent-dark: #134238;
  --line: rgba(29, 92, 79, 0.16);
  --error-bg: #fff0eb;
  --error-text: #8a2f1c;
  --shadow: 0 24px 80px rgba(50, 45, 35, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.85), transparent 35%),
    linear-gradient(135deg, #efe7d8 0%, #f7f3ec 45%, #e8efe9 100%);
}

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 72px;
}

.hero {
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1 {
  margin: 0;
  max-width: 680px;
  font-size: clamp(2.2rem, 5vw, 4.3rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.lede {
  margin: 18px 0 0;
  max-width: 640px;
  font-size: 1.04rem;
  line-height: 1.6;
  color: var(--muted);
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  padding: 28px;
}

.upload-form {
  display: grid;
  gap: 18px;
}

.dropzone {
  display: grid;
  gap: 10px;
  padding: 28px;
  border: 2px dashed rgba(29, 92, 79, 0.35);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.56);
  cursor: pointer;
}

.dropzone-title {
  font-size: 1.2rem;
  font-weight: 700;
}

.dropzone-copy {
  color: var(--muted);
}

.dropzone input {
  margin-top: 4px;
}

.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-width: 190px;
  padding: 14px 20px;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.16s ease, background 0.16s ease;
}

.primary-btn:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

.secondary-link {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.result-card {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.flash-list {
  margin-bottom: 18px;
}

.flash {
  padding: 14px 18px;
  border-radius: 16px;
}

.flash.error {
  background: var(--error-bg);
  color: var(--error-text);
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 20px, 920px);
    padding-top: 32px;
  }

  .card {
    padding: 18px;
    border-radius: 22px;
  }

  .dropzone {
    padding: 20px;
  }
}