:root {
  --bg: #f6f7f5;
  --bg-soft: #edf2ef;
  --surface: #ffffff;
  --text: #1f2421;
  --muted: #5f6a65;
  --line: #dce5df;
  --brand: #1b6a6f;
  --brand-2: #f4a259;
  --ok: #1f9d55;
  --warn: #b7791f;
  --danger: #c53030;
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: "Noto Sans TC", sans-serif;
  color: var(--text);
  background: var(--bg);
}

a { color: inherit; }

.app {
  max-width: 1160px;
  margin: 0 auto;
  padding: 20px 16px 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.brand {
  font-weight: 900;
  letter-spacing: 0.4px;
}

.back-link {
  text-decoration: none;
  font-size: 14px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  background: var(--surface);
}

.hero {
  background: linear-gradient(120deg, var(--brand) 0%, #356f71 45%, #4da5aa 100%);
  color: #fff;
  border-radius: calc(var(--radius) + 8px);
  padding: 24px;
  box-shadow: 0 12px 28px rgba(10, 50, 55, 0.22);
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  letter-spacing: 0.3px;
}

.hero p {
  margin: 10px 0 0;
  line-height: 1.7;
  max-width: 900px;
  opacity: 0.95;
}

.mode-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.mode-item {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 12px;
  padding: 10px;
  font-size: 14px;
}

.layout {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 14px;
}

.side {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  height: fit-content;
  position: sticky;
  top: 12px;
}

.side h2 {
  font-size: 14px;
  margin: 0 0 8px;
  color: var(--muted);
}

.menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.menu button {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  border-radius: 12px;
  font-weight: 700;
  text-align: left;
  padding: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.menu button.active {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

.content {
  display: grid;
  gap: 12px;
}

.section {
  display: none;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 5px 16px rgba(12, 26, 23, 0.08);
}

.section.active { display: block; }

.section h3 {
  margin: 0 0 8px;
  font-size: 1.2rem;
}

.section p.lead {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.7;
}

.grid-2,
.grid-3 {
  display: grid;
  gap: 12px;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: #fff;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  background: #e8f4f2;
  color: #1d6d70;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 6px;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
}

textarea { resize: vertical; }

.row {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.btn {
  border: 0;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  font-weight: 800;
  padding: 10px 12px;
  cursor: pointer;
}

.btn.secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
}

.btn.warn { background: var(--brand-2); color: #26211c; }

.btn.ghost {
  background: transparent;
  color: var(--brand);
  border: 1px solid var(--brand);
}

.inline-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.kpi {
  font-size: 1.65rem;
  font-weight: 900;
}

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

.status {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 10px;
}

.status.ok { background: #e8fff1; color: #1c7c45; }
.status.warn { background: #fff8e7; color: #91611d; }
.status.danger { background: #ffecec; color: #a12a2a; }

.progress {
  width: 100%;
  height: 8px;
  border-radius: 99px;
  overflow: hidden;
  background: #edf2ef;
}

.progress > span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--brand);
}

.dropzone {
  border: 2px dashed #b8c8bf;
  border-radius: 14px;
  padding: 18px;
  text-align: center;
  background: #f8fbf9;
}

.dropzone.dragover {
  border-color: var(--brand);
  background: #ebf7f5;
}

.preview-list {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.preview-item {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
}

.preview-thumb {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 8px;
  background: #f1f1f1;
}

.mail {
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}

.mail-head {
  background: #f5faf8;
  border-bottom: 1px solid var(--line);
  padding: 10px;
  font-size: 13px;
}

.mail-body {
  padding: 12px;
  font-size: 14px;
  line-height: 1.7;
}

.chart-wrap {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  background: #fff;
}

.photo-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.photo-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
}

.photo-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.photo-card .meta {
  padding: 10px;
}

.photo-card h4 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.photo-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
}

footer.note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
}

.toast {
  position: fixed;
  right: 12px;
  bottom: 12px;
  background: #111;
  color: #fff;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 13px;
  opacity: 0;
  transform: translateY(8px);
  transition: 0.2s ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Theme: Forest */
body.theme-forest {
  --bg: radial-gradient(circle at 90% -10%, #d9efe8 0%, rgba(217,239,232,0) 40%),
        radial-gradient(circle at 0% 120%, #fce6cf 0%, rgba(252,230,207,0) 35%),
        #f5f8f6;
  --surface: #ffffff;
  --brand: #2f6a4f;
  --brand-2: #e6b56f;
  --line: #dbe8de;
}

/* Theme: Block */
body.theme-block {
  --bg: linear-gradient(135deg, #f2f2f2 0%, #e9e9e9 100%);
  --surface: #ffffff;
  --text: #151515;
  --muted: #555;
  --line: #d9d9d9;
  --brand: #111111;
  --brand-2: #ffd84d;
  --radius: 8px;
}

body.theme-block .hero {
  background: linear-gradient(135deg, #0d0d0d 0%, #303030 100%);
  box-shadow: 0 12px 24px rgba(0,0,0,0.2);
}

body.theme-block .menu button.active {
  background: #111;
  border-color: #111;
}

/* Theme: Vivir */
body.theme-vivir {
  --bg: linear-gradient(180deg, #fffaf7 0%, #fff0ea 100%);
  --surface: #ffffff;
  --text: #222227;
  --muted: #5f5f70;
  --line: #eeded6;
  --brand: #c85461;
  --brand-2: #5b8fdb;
  --radius: 18px;
}

body.theme-vivir .hero {
  background: linear-gradient(120deg, #c85461 0%, #e5856f 55%, #5b8fdb 100%);
}

@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .side { position: static; }
  .grid-3 { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .row,
  .grid-2 { grid-template-columns: 1fr; }
  .mode-grid { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: 1fr; }
}