/* 灰烬笔记 · 样式 */

:root {
  --bg: #0a0b0f;
  --bg-soft: #12141b;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #eef0f4;
  --muted: #8b93a7;
  --ember: #ff6b35;
  --ember-soft: #ffa07a;
  --ember-glow: rgba(255, 107, 53, 0.35);
  --ok: #4ade80;
  --warn: #fbbf24;
  --danger: #f87171;
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

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

body {
  min-height: 100vh;
  background: radial-gradient(1200px 600px at 50% -10%, #191320 0%, var(--bg) 55%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 3D 背景层：只在信息量少的页面出现 */
.stage {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 900px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.85;
}

.stage.hidden {
  display: none;
}

.paper3d {
  position: relative;
  width: 260px;
  height: 340px;
  transform-style: preserve-3d;
  animation: spin 22s linear infinite;
}

.paper3d .face {
  position: absolute;
  inset: 0;
  border-radius: 8px;
  border: 1px solid rgba(255, 200, 160, 0.28);
  background: linear-gradient(150deg, rgba(255, 140, 80, 0.16), rgba(120, 60, 200, 0.1) 60%, rgba(255, 255, 255, 0.03));
  box-shadow: inset 0 0 60px rgba(255, 120, 60, 0.14), 0 0 80px rgba(255, 107, 53, 0.12);
  backface-visibility: visible;
}

.paper3d .face::after {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 6px;
  border: 1px dashed rgba(255, 190, 150, 0.18);
}

.paper3d .front {
  transform: translateZ(6px);
}

.paper3d .back {
  transform: rotateY(180deg) translateZ(6px);
}

.paper3d .side {
  position: absolute;
  width: 340px;
  height: 12px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotateX(90deg);
  background: linear-gradient(90deg, rgba(255, 120, 60, 0.1), rgba(255, 200, 150, 0.22), rgba(255, 120, 60, 0.1));
  border-radius: 4px;
  filter: blur(1px);
}

@keyframes spin {
  from {
    transform: rotateX(-14deg) rotateY(0deg);
  }
  to {
    transform: rotateX(-14deg) rotateY(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .paper3d {
    animation: none;
    transform: rotateX(-14deg) rotateY(-24deg);
  }
}

/* 布局 */
.wrap {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
  padding: 56px 20px 80px;
}

.wrap.narrow {
  max-width: 520px;
}

header.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(140deg, var(--ember), #b03a8f);
  box-shadow: 0 0 22px var(--ember-glow);
}

.brand-name {
  font-size: 15px;
  letter-spacing: 0.12em;
  color: #d7dbe6;
}

.brand-name span {
  color: var(--muted);
  letter-spacing: 0.02em;
  margin-left: 8px;
  font-size: 12px;
}

h1 {
  font-size: 30px;
  line-height: 1.3;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

h1 .accent {
  background: linear-gradient(100deg, #ffb199, var(--ember) 45%, #d16bff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
  margin: 0 0 28px;
}

.card {
  background: rgba(18, 20, 27, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

.card + .card {
  margin-top: 16px;
}

label.field-label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

textarea,
input[type="text"],
input[type="password"] {
  width: 100%;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--text);
  padding: 13px 14px;
  font-size: 14px;
  font-family: inherit;
  line-height: 1.7;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
}

textarea {
  min-height: 170px;
  resize: vertical;
}

textarea:focus,
input:focus {
  border-color: rgba(255, 140, 90, 0.55);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.12);
}

.row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 16px;
}

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

.chip {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.02);
  color: var(--muted);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.16s;
}

.chip:hover {
  border-color: rgba(255, 140, 90, 0.4);
  color: var(--text);
}

.chip.active {
  border-color: rgba(255, 140, 90, 0.7);
  color: #ffd9c6;
  background: rgba(255, 107, 53, 0.12);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 10px;
  padding: 13px 22px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.12s, opacity 0.16s, box-shadow 0.16s;
}

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

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

.btn-primary {
  width: 100%;
  margin-top: 18px;
  background: linear-gradient(100deg, #ff7a45, #ff4d6d);
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: 0 10px 30px rgba(255, 90, 60, 0.28);
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 12px 38px rgba(255, 90, 60, 0.42);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border: 1px solid var(--line-strong);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.09);
}

.btn-danger {
  background: rgba(248, 113, 113, 0.12);
  color: #ffb4b4;
  border: 1px solid rgba(248, 113, 113, 0.35);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 13px;
  border-radius: 8px;
}

.result {
  margin-top: 18px;
  display: none;
}

.result.show {
  display: block;
  animation: fadeUp 0.35s ease both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.copy-row {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.copy-row input {
  font-size: 12px;
  color: #cfd5e3;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.hint {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.75;
  margin-top: 10px;
}

.hint.warn {
  color: #f3c98b;
}

.divider {
  height: 1px;
  background: var(--line);
  margin: 18px 0;
}

.msg {
  border-radius: 10px;
  padding: 13px 15px;
  font-size: 13.5px;
  line-height: 1.7;
  margin-top: 14px;
  display: none;
}

.msg.show {
  display: block;
}

.msg.error {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: #ffc9c9;
}

.msg.ok {
  background: rgba(74, 222, 128, 0.08);
  border: 1px solid rgba(74, 222, 128, 0.28);
  color: #b6f5cd;
}

.secret-box {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 18px;
  font-size: 15px;
  line-height: 1.8;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 46vh;
  overflow: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.status-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 6px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 10px currentColor;
}

.dot.unread {
  background: var(--warn);
  color: var(--warn);
}

.dot.read {
  background: var(--danger);
  color: var(--danger);
}

.dot.expired {
  background: #6b7280;
  color: #6b7280;
}

.kv {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 13.5px;
}

.kv:last-child {
  border-bottom: none;
}

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

.kv .v {
  color: #dfe4ee;
  text-align: right;
  word-break: break-all;
}

.center {
  text-align: center;
}

.center .lead {
  margin-bottom: 0;
}

footer.foot {
  margin-top: 40px;
  font-size: 12px;
  color: #5d6478;
  line-height: 1.9;
}

footer.foot a {
  color: #8b93a7;
  text-decoration: none;
  border-bottom: 1px dotted rgba(255, 255, 255, 0.18);
}

.hash {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: #6b7280;
}

@media (max-width: 520px) {
  .wrap {
    padding: 36px 16px 64px;
  }

  h1 {
    font-size: 24px;
  }

  .paper3d {
    width: 200px;
    height: 262px;
    opacity: 0.6;
  }
}