:root {
  /* 护眼米黄 + 深绿主题 */
  --bg: #f4ecd8;          /* 米黄背景 */
  --bg-alt: #efe6cf;      /* 略深米黄 */
  --card: #fbf6e9;        /* 卡片底色 */
  --ink: #2f3a30;         /* 深墨绿文字 */
  --ink-soft: #5c6b58;    /* 次级文字 */
  --green: #2f5d3a;       /* 主色 深绿 */
  --green-deep: #244a2e;  /* 深绿按下 */
  --green-soft: #dfe9d8;  /* 浅绿底 */
  --accent: #6b8e5a;      /* 辅助绿 */
  --border: #d9cdaa;      /* 米黄边框 */
  --danger: #a5462f;      /* 错误红棕 */
  --danger-soft: #f2ddd4;
  --ok: #2f5d3a;
  --shadow: 0 6px 22px rgba(47, 74, 46, 0.1);
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: linear-gradient(160deg, var(--bg) 0%, var(--bg-alt) 100%);
  color: var(--ink);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

code {
  background: var(--green-soft);
  color: var(--green-deep);
  padding: 1px 6px;
  border-radius: 6px;
  font-family: "Consolas", "SFMono-Regular", monospace;
  font-size: 0.9em;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--green);
  color: #f4ecd8;
  padding: 22px 24px;
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}

.brand-mark {
  font-size: 34px;
  line-height: 1;
  background: rgba(244, 236, 216, 0.16);
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-text h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.tagline {
  margin: 2px 0 0;
  font-size: 13px;
  opacity: 0.85;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 26px 20px 40px;
  flex: 1;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.card-title {
  margin: 0 0 16px;
  font-size: 16px;
  color: var(--green-deep);
  font-weight: 700;
}

.intro-card p {
  margin: 0 0 14px;
}

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

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-soft);
  font-size: 14px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ---------- Dropzone ---------- */
.dropzone {
  border: 2px dashed var(--accent);
  border-radius: var(--radius);
  background: var(--bg-alt);
  padding: 34px 20px;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.05s;
  outline: none;
}

.dropzone:hover,
.dropzone:focus-visible {
  background: var(--green-soft);
  border-color: var(--green);
}

.dropzone.dragover {
  background: var(--green-soft);
  border-color: var(--green-deep);
  border-style: solid;
}

.dropzone.has-file {
  border-style: solid;
  border-color: var(--green);
  background: var(--green-soft);
}

.dz-icon {
  font-size: 40px;
  display: block;
  margin-bottom: 8px;
}

.dz-primary {
  margin: 0 0 4px;
  font-size: 15px;
}

.dz-secondary {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}

/* ---------- Buttons ---------- */
.actions-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s, transform 0.05s, opacity 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--green);
  color: #f4ecd8;
}

.btn-primary:hover:not(:disabled) {
  background: var(--green-deep);
}

.btn-ghost {
  background: transparent;
  color: var(--green-deep);
  border-color: var(--border);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-alt);
}

.btn-small {
  padding: 7px 14px;
  font-size: 13px;
  background: var(--green-soft);
  color: var(--green-deep);
}

.btn-small:hover:not(:disabled) {
  background: #cfe0c4;
}

.btn-small.btn-primary {
  background: var(--green);
  color: #f4ecd8;
}

.btn-small.btn-primary:hover:not(:disabled) {
  background: var(--green-deep);
}

.hint {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.hint.error {
  color: var(--danger);
  font-weight: 600;
}

/* ---------- Spinner ---------- */
.spinner {
  width: 15px;
  height: 15px;
  border: 2px solid rgba(244, 236, 216, 0.4);
  border-top-color: #f4ecd8;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---------- Result ---------- */
.result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.result-head .card-title {
  margin: 0;
}

.badge {
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green-deep);
  border: 1px solid var(--accent);
}

.account-status {
  display: grid;
  gap: 6px;
  margin-bottom: 16px;
}

.account-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
}

.account-row .status-icon {
  font-weight: 700;
}

.account-row.ok .status-icon {
  color: var(--ok);
}

.account-row.fail {
  background: var(--danger-soft);
  border-color: #e0b8a8;
}

.account-row.fail .status-icon {
  color: var(--danger);
}

.account-row .who {
  font-weight: 600;
}

.account-row .msg {
  color: var(--ink-soft);
  margin-left: auto;
}

.result-toolbar {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.result-output {
  background: #2b3a2e;
  color: #e9f0e2;
  border-radius: 10px;
  padding: 16px;
  overflow: auto;
  max-height: 420px;
  margin: 0;
  font-family: "Consolas", "SFMono-Regular", monospace;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre;
  border: 1px solid var(--green-deep);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--green-deep);
  color: #f4ecd8;
  padding: 12px 22px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  font-size: 14px;
  z-index: 50;
  animation: toastin 0.2s ease;
}

.toast.error {
  background: var(--danger);
}

@keyframes toastin {
  from {
    opacity: 0;
    transform: translate(-50%, 8px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--green-deep);
  color: #d8e2cf;
  text-align: center;
  padding: 16px 20px;
  font-size: 12.5px;
}

.site-footer p {
  margin: 0;
  max-width: 720px;
  margin: 0 auto;
}

.site-footer code {
  background: rgba(244, 236, 216, 0.16);
  color: #f4ecd8;
}

/* ---------- Responsive ---------- */
@media (max-width: 560px) {
  .brand-text h1 {
    font-size: 18px;
  }
  .card {
    padding: 18px 16px;
  }
  .account-row .msg {
    margin-left: 0;
    width: 100%;
  }
  .account-row {
    flex-wrap: wrap;
  }
}