:root {
  --bg-1: #e8f3ee;
  --bg-2: #f7f4ef;
  --ink: #173028;
  --muted: #5d7268;
  --line: rgba(23, 48, 40, 0.12);
  --card: rgba(255, 255, 255, 0.72);
  --primary: #1f7a5c;
  --primary-ink: #ffffff;
  --accent: #c45c26;
  --shadow: 0 18px 50px rgba(23, 48, 40, 0.1);
  --radius: 22px;
  --font-display: "Outfit", "Noto Sans TC", sans-serif;
  --font-body: "Noto Sans TC", sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg-2);
}

body {
  position: relative;
}

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(31, 122, 92, 0.22), transparent 60%),
    radial-gradient(700px 420px at 90% 0%, rgba(196, 92, 38, 0.14), transparent 55%),
    linear-gradient(165deg, var(--bg-1), var(--bg-2) 55%, #efe8dc);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}

nav {
  display: flex;
  gap: 0.75rem;
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  transition: background 180ms ease, color 180ms ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.55);
}

.shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.5rem 1.5rem 3rem;
  display: grid;
  gap: 1.5rem;
}

.hero-panel,
.results-panel,
.login-panel,
.admin-panel {
  background: var(--card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.6rem;
  animation: rise 480ms ease both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

h1, h2 {
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0 0 0.75rem;
}

h1 {
  font-size: clamp(2rem, 4vw, 3rem);
}

.lead {
  margin: 0 0 1.4rem;
  color: var(--muted);
  max-width: 38rem;
}

.upload-panel {
  display: grid;
  gap: 1rem;
}

.dropzone {
  display: grid;
  place-items: center;
  gap: 0.35rem;
  min-height: 220px;
  border: 1.5px dashed rgba(31, 122, 92, 0.45);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.55), rgba(255,255,255,0.2));
  cursor: pointer;
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
  overflow: hidden;
  position: relative;
  padding: 1rem;
  text-align: center;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--primary);
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.7);
}

.drop-title {
  font-weight: 700;
}

.drop-hint {
  color: var(--muted);
  font-size: 0.92rem;
}

.preview {
  max-width: 100%;
  max-height: 280px;
  border-radius: 14px;
  object-fit: contain;
}

.btn {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 0.85rem 1.3rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 160ms ease, opacity 160ms ease, background 160ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn.primary {
  background: var(--primary);
  color: var(--primary-ink);
}

.btn.ghost {
  background: rgba(23, 48, 40, 0.06);
  color: var(--ink);
}

.btn.danger {
  background: rgba(180, 48, 48, 0.12);
  color: #8a1f1f;
}

.results-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.model-tag,
.muted {
  color: var(--muted);
  margin: 0;
  font-size: 0.92rem;
}

.results-list {
  display: grid;
  gap: 0.85rem;
}

.result-image-wrap {
  margin-bottom: 1rem;
  max-width: 420px;
}

.result-canvas {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid var(--line);
}

.result-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.4rem 1rem;
  padding: 1rem 1.1rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--line);
  animation: rise 420ms ease both;
}

.result-name {
  font-weight: 700;
  font-size: 1.08rem;
}

.result-meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.confidence {
  text-align: right;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--primary);
}

.confidence-bar {
  grid-column: 1 / -1;
  height: 8px;
  border-radius: 999px;
  background: rgba(23, 48, 40, 0.08);
  overflow: hidden;
}

.confidence-bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #2d9a72, #1f7a5c);
  border-radius: inherit;
  transform-origin: left center;
  animation: fillBar 700ms ease both;
}

@keyframes fillBar {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.login-panel {
  max-width: 440px;
  margin: 2rem auto;
}

.stack-form {
  display: grid;
  gap: 0.9rem;
}

.stack-form label {
  display: grid;
  gap: 0.35rem;
  font-weight: 500;
}

input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem 0.85rem;
  font: inherit;
  background: rgba(255, 255, 255, 0.85);
  color: var(--ink);
}

textarea {
  resize: vertical;
}

.admin-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
}

.toolbar-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.file-btn {
  display: inline-flex;
  align-items: center;
}

.table-wrap {
  overflow: auto;
  border-radius: 16px;
  border: 1px solid var(--line);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
  background: rgba(255, 255, 255, 0.55);
}

.data-table th,
.data-table td {
  text-align: left;
  padding: 0.85rem 0.9rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.data-table th {
  font-size: 0.85rem;
  color: var(--muted);
  background: rgba(23, 48, 40, 0.04);
}

.row-actions {
  display: flex;
  gap: 0.4rem;
}

.dish-dialog {
  border: none;
  border-radius: 20px;
  padding: 0;
  width: min(720px, calc(100vw - 2rem));
  background: #fffaf4;
  box-shadow: var(--shadow);
}

.dish-dialog::backdrop {
  background: rgba(18, 32, 27, 0.45);
  backdrop-filter: blur(3px);
}

.dish-dialog form {
  padding: 1.4rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.form-grid .span-2 {
  grid-column: 1 / -1;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  margin-top: 0.4rem;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.4rem;
  transform: translateX(-50%);
  background: #173028;
  color: #fff;
  padding: 0.8rem 1.1rem;
  border-radius: 999px;
  box-shadow: var(--shadow);
  z-index: 50;
}

.hidden {
  display: none !important;
}

.empty {
  color: var(--muted);
}

@media (max-width: 720px) {
  .topbar, .shell {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-grid .span-2 {
    grid-column: auto;
  }

  .result-card {
    grid-template-columns: 1fr;
  }

  .confidence {
    text-align: left;
  }
}