/* 时间胶囊 —— 全站样式。刻意不用任何框架/CDN：磁盘紧张，且减少外部依赖面。 */

:root {
  --bg: #0d1117;
  --bg-soft: #161b22;
  --bg-card: #1c2128;
  --border: #2d333b;
  --border-soft: #22272e;
  --text: #e6edf3;
  --text-dim: #9198a1;
  --text-faint: #6e7681;
  --accent: #d4a373;
  --accent-hi: #e8c49a;
  --accent-dim: #3d3125;
  --danger: #f85149;
  --danger-dim: #3d1d1b;
  --success: #3fb950;
  --info: #58a6ff;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hi); text-decoration: underline; }

code, pre, .mono { font-family: var(--mono); font-size: 13px; }

/* ------------------------------------------------------------ 布局 */

.wrap { max-width: 940px; margin: 0 auto; padding: 32px 20px 80px; }
.wrap-narrow { max-width: 460px; }

header.site {
  border-bottom: 1px solid var(--border-soft);
  background: rgba(13, 17, 23, .9);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 20;
}
header.site .inner {
  max-width: 940px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; gap: 16px;
}
header.site .logo { font-weight: 600; letter-spacing: .5px; color: var(--text); }
header.site .logo:hover { text-decoration: none; color: var(--accent); }
header.site .logo .mark { color: var(--accent); margin-right: 6px; }
header.site nav { margin-left: auto; display: flex; gap: 16px; align-items: center; font-size: 14px; }
header.site nav a { color: var(--text-dim); }
header.site nav a:hover { color: var(--text); }

/* ------------------------------------------------------------ 排版 */

h1 { font-size: 26px; margin: 0 0 8px; font-weight: 600; letter-spacing: .3px; }
h2 { font-size: 19px; margin: 32px 0 12px; font-weight: 600; }
h3 { font-size: 16px; margin: 20px 0 8px; font-weight: 600; }
p { margin: 0 0 12px; }
.dim { color: var(--text-dim); }
.faint { color: var(--text-faint); font-size: 13px; }
.center { text-align: center; }

/* ------------------------------------------------------------ 卡片 */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.card-tight { padding: 14px 16px; }

/* ------------------------------------------------------------ 表单 */

label.field { display: block; margin-bottom: 14px; }
label.field .lbl {
  display: block; font-size: 13px; color: var(--text-dim);
  margin-bottom: 6px; font-weight: 500;
}
label.field .hint { display: block; font-size: 12px; color: var(--text-faint); margin-top: 5px; }

input[type=text], input[type=email], input[type=password], input[type=datetime-local],
input[type=number], textarea, select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text);
  padding: 9px 11px;
  font: inherit;
  font-size: 14px;
}
textarea { min-height: 220px; resize: vertical; line-height: 1.6; font-family: inherit; }
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
input::placeholder, textarea::placeholder { color: var(--text-faint); }

button {
  font: inherit;
  font-size: 14px;
  background: var(--bg-soft);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 9px 16px;
  cursor: pointer;
  transition: .15s;
}
button:hover:not(:disabled) { border-color: var(--text-faint); background: var(--border-soft); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary {
  background: var(--accent); color: #1b1205; border-color: var(--accent); font-weight: 600;
}
button.primary:hover:not(:disabled) { background: var(--accent-hi); border-color: var(--accent-hi); }
button.danger { color: var(--danger); border-color: var(--danger-dim); }
button.danger:hover:not(:disabled) { background: var(--danger-dim); border-color: var(--danger); }
button.link {
  background: none; border: none; color: var(--text-dim); padding: 0;
  text-decoration: underline; font-size: 13px;
}
button.sm { padding: 5px 11px; font-size: 13px; }

.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.row-end { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .split { grid-template-columns: 1fr; } }

.inline-check { display: flex; gap: 8px; align-items: flex-start; font-size: 13px; color: var(--text-dim); }
.inline-check input { width: auto; margin-top: 3px; flex: none; }

/* ------------------------------------------------------------ 提示条 */

.alert {
  border-radius: 8px; padding: 11px 14px; margin-bottom: 14px;
  font-size: 14px; border: 1px solid transparent; white-space: pre-wrap;
}
.alert.err { background: var(--danger-dim); border-color: #6e2b28; color: #ffc9c5; }
.alert.ok { background: #12261a; border-color: #1f4d2e; color: #b6f0c1; }
.alert.warn { background: #2b2312; border-color: #5c4a1e; color: #f0dfa8; }
.alert.info { background: #0f2033; border-color: #1f4066; color: #c3dcf5; }
.alert:empty { display: none; }

/* ------------------------------------------------------------ 状态徽标 */

.badge {
  display: inline-block; font-size: 12px; padding: 2px 8px; border-radius: 20px;
  border: 1px solid var(--border); color: var(--text-dim); white-space: nowrap;
}
.badge.draft { border-color: #4a4458; color: #b9aee0; }
.badge.sealed { border-color: #5c4a1e; color: #e8c49a; }
.badge.sending { border-color: #1f4066; color: #8cc2ff; }
.badge.sent { border-color: #1f4d2e; color: #7ee39a; }
.badge.failed { border-color: #6e2b28; color: #ff9b95; }
.badge.cancelled { border-color: var(--border); color: var(--text-faint); }
.badge.mode { border-color: var(--border); color: var(--text-dim); font-family: var(--mono); }
.badge.mode.a { border-color: #3a4d68; color: #9dc4ee; }
.badge.mode.b { border-color: #55432a; color: #e2c193; }

/* ------------------------------------------------------------ 胶囊列表 */

.capsule-item {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px; margin-bottom: 12px;
}
.capsule-item h3 { margin: 0 0 6px; font-size: 16px; }
.capsule-item .meta { font-size: 13px; color: var(--text-dim); display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 10px; }
.capsule-item .actions { display: flex; gap: 8px; flex-wrap: wrap; }

.empty { text-align: center; padding: 48px 20px; color: var(--text-faint); }

/* ------------------------------------------------------------ 倒计时 */

.countdown { font-family: var(--mono); font-size: 13px; color: var(--accent); }

/* ------------------------------------------------------------ 解密页 */

.paste-box {
  width: 100%; min-height: 190px; font-family: var(--mono); font-size: 12px; line-height: 1.5;
}
.revealed {
  background: #101820; border: 1px solid var(--border);
  border-radius: 8px; padding: 20px; margin-top: 16px;
  white-space: pre-wrap; word-break: break-word; line-height: 1.75;
}
.revealed h3 { margin-top: 0; }

/* ------------------------------------------------------------ 页脚 */

footer.site {
  border-top: 1px solid var(--border-soft);
  padding: 24px 20px; text-align: center;
  color: var(--text-faint); font-size: 13px;
}
footer.site a { color: var(--text-faint); }

/* ------------------------------------------------------------ 杂项 */

.spinner {
  display: inline-block; width: 13px; height: 13px; margin-right: 7px;
  border: 2px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; animation: spin .7s linear infinite; vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.copy-field {
  font-family: var(--mono); font-size: 12px; background: var(--bg);
  border: 1px solid var(--border); border-radius: 6px; padding: 10px;
  white-space: pre-wrap; word-break: break-all; max-height: 190px; overflow: auto;
}

.hr { height: 1px; background: var(--border-soft); margin: 24px 0; border: 0; }

.steps { counter-reset: s; list-style: none; padding: 0; }
.steps li { counter-increment: s; position: relative; padding-left: 34px; margin-bottom: 14px; }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: 1px;
  width: 22px; height: 22px; border-radius: 50%; background: var(--accent-dim);
  color: var(--accent); font-size: 12px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
}

.hidden { display: none !important; }