:root {
  --bg: #f3efe6;
  --bg-deep: #e7e0d2;
  --ink: #1c2420;
  --muted: #5d6a63;
  --line: #cfc5b4;
  --panel: #fffdf8;
  --accent: #1f5c4a;
  --accent-soft: #d7ebe3;
  --danger: #8b2e2e;
  --shadow: 0 18px 40px rgba(28, 36, 32, 0.08);
  --radius: 14px;
  --font-sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --font-serif: "Source Serif 4", "Noto Serif TC", serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(31, 92, 74, 0.08), transparent 36%),
    linear-gradient(160deg, var(--bg) 0%, var(--bg-deep) 100%);
}

a { color: inherit; text-decoration: none; }

.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-shell {
  width: min(920px, 100%);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.login-aside {
  padding: 48px 40px;
  background:
    linear-gradient(160deg, rgba(31, 92, 74, 0.92), rgba(18, 48, 40, 0.95)),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  color: #f7fff9;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
}

.login-aside .eyebrow {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.75rem;
  opacity: 0.8;
}

.login-aside h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.6rem);
  line-height: 1.2;
  margin: 12px 0 10px;
}

.login-aside p {
  margin: 0;
  line-height: 1.7;
  opacity: 0.9;
}

.login-panel {
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.login-panel h2 {
  margin: 0 0 8px;
  font-size: 1.5rem;
}

.login-panel .hint {
  margin: 0 0 28px;
  color: var(--muted);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.form-field label {
  font-size: 0.92rem;
  font-weight: 500;
}

.form-field input,
.form-field select {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  font: inherit;
  background: #fff;
}

.form-field input:focus,
.form-field select:focus {
  outline: 2px solid rgba(31, 92, 74, 0.25);
  border-color: var(--accent);
}

.form-field select:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 10px;
  padding: 12px 18px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
}

.btn-primary:hover { filter: brightness(1.05); }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 8px 12px;
  font-size: 0.9rem;
}

.alert {
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 18px;
  background: #f8e8e8;
  color: var(--danger);
  border: 1px solid #e7c5c5;
}

.app-body { min-height: 100vh; display: flex; flex-direction: column; }

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 28px;
  background: rgba(255, 253, 248, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text strong {
  font-family: var(--font-serif);
  font-size: 1.05rem;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.78rem;
}

.topbar-nav {
  display: flex;
  gap: 8px;
  margin-right: auto;
}

.topbar-nav a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
}

.topbar-nav a.is-active,
.topbar-nav a:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
}

.page {
  width: min(1100px, calc(100% - 40px));
  margin: 28px auto 40px;
  flex: 1;
}

.hero-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 30px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.hero-panel h1 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2rem);
}

.hero-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.module-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.module-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.module-card .tag {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 8px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.module-card h2 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.module-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.placeholder-box {
  background: var(--panel);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 28px;
}

.placeholder-box h1 {
  margin-top: 0;
  font-family: var(--font-serif);
}

.placeholder-box ul {
  color: var(--muted);
  line-height: 1.8;
}

.report-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 30px;
  box-shadow: var(--shadow);
}

.report-panel-intro h1 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2rem);
}

.report-panel-intro p {
  margin: 0 0 24px;
  color: var(--muted);
  line-height: 1.7;
}

.report-form .form-grid {
  display: grid;
  grid-template-columns: 1.6fr 0.7fr 0.7fr;
  gap: 16px;
}

.form-actions {
  margin-top: 8px;
}

.btn-inline {
  width: auto;
  min-width: 140px;
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.success-box {
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 18px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid #b7d7cb;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
}

.success-box p {
  margin: 0;
  font-weight: 600;
}

@media (max-width: 820px) {
  .report-form .form-grid {
    grid-template-columns: 1fr;
  }
}

.site-footer {
  padding: 18px 28px 28px;
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}

@media (max-width: 820px) {
  .login-shell { grid-template-columns: 1fr; }
  .login-aside { min-height: 220px; }
  .topbar {
    flex-wrap: wrap;
    gap: 12px;
  }
  .topbar-nav { order: 3; width: 100%; margin-right: 0; }
}