/* ============================================================
   KRONOS ZHOU · 「打个招呼」留言弹窗样式
   路径：shared/greeting-modal.css
   ------------------------------------------------------------
   和全站 cosmic 设计同一套语言：纯黑遮罩 + 毛玻璃、surface 面板、
   stroke 细边、大圆角、渐变主按钮、衬线斜体点缀。

   ⚠️ 只认 main-page.css 里的设计令牌（--bg / --surface / --text /
      --muted / --stroke / --accent-rgb / --grad-from / --grad-to），
      引用时都带兜底值 —— 万一某个页面没引 main-page.css 也不会瞎。
   ============================================================ */

/* ============================================================
   1. 遮罩
   ============================================================ */
.greet-overlay {
  position: fixed;
  inset: 0;
  z-index: 3000;   /* 高于顶栏(100)与虚化层(9998)之外的一切常规内容 */
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background: rgba(4, 4, 6, 0.72);
  backdrop-filter: blur(10px) saturate(120%);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
  opacity: 0;
  transition: opacity 260ms ease;
  overscroll-behavior: contain;
}

.greet-overlay.is-on {
  opacity: 1;
}

.greet-overlay[hidden] {
  display: none;
}

/* ============================================================
   2. 面板
   ============================================================ */
.greet-panel {
  position: relative;
  width: 100%;
  max-width: 32rem;
  max-height: calc(100vh - 2.5rem);
  max-height: calc(100dvh - 2.5rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 2rem 1.85rem 1.6rem;
  border-radius: 1.75rem;
  border: 1px solid hsl(var(--stroke, 0 0% 12%));
  background: hsl(var(--surface, 0 0% 8%));
  box-shadow: 0 40px 90px -40px rgba(0, 0, 0, 0.95),
              0 0 0 1px rgba(255, 255, 255, 0.02) inset;
  transform: translateY(14px) scale(0.98);
  opacity: 0;
  transition: transform 320ms cubic-bezier(0.2, 0.9, 0.4, 1),
              opacity 260ms ease;
}

.greet-overlay.is-on .greet-panel {
  transform: none;
  opacity: 1;
}

/* 顶部那道渐变细线，和全站其它玻璃面板一致 */
.greet-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 1.75rem;
  right: 1.75rem;
  height: 2px;
  border-radius: 2px;
  background-image: linear-gradient(90deg,
    var(--grad-from, #89aacc), var(--grad-to, #4e85bf), transparent);
  opacity: 0.75;
  pointer-events: none;
}

/* ============================================================
   3. 关闭按钮
   ============================================================ */
.greet-close {
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid hsl(var(--stroke, 0 0% 12%));
  background: transparent;
  color: hsl(var(--muted, 0 0% 53%));
  font-size: 0.9rem;
  line-height: 1;
  cursor: pointer;
  transition: color 200ms ease, border-color 200ms ease, background 200ms ease;
}

.greet-close:hover {
  color: hsl(var(--text, 0 0% 96%));
  border-color: rgba(var(--accent-rgb, 78, 133, 191), 0.5);
  background: rgba(255, 255, 255, 0.04);
}

.greet-close:focus-visible {
  outline: 2px solid rgba(var(--accent-rgb, 78, 133, 191), 0.8);
  outline-offset: 2px;
}

/* ============================================================
   4. 标题与说明
   ============================================================ */
.greet-title {
  font-size: clamp(1.5rem, 4vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: hsl(var(--text, 0 0% 96%));
  margin-bottom: 0.7rem;
  padding-right: 2.25rem;   /* 给关闭按钮让位 */
}

.greet-desc {
  font-size: 0.875rem;
  line-height: 1.75;
  color: hsl(var(--muted, 0 0% 53%));
  margin-bottom: 1.5rem;
}

/* ============================================================
   5. 表单
   ============================================================ */
.greet-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.greet-form[hidden],
.greet-success[hidden] {
  display: none;
}

.greet-field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.greet-label {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: hsl(var(--text, 0 0% 96%) / 0.85);
}

.greet-input {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: 0.85rem;
  border: 1px solid hsl(var(--stroke, 0 0% 12%));
  background: hsl(var(--bg, 0 0% 4%));
  color: hsl(var(--text, 0 0% 96%));
  font: inherit;
  font-size: 0.9rem;
  line-height: 1.5;
  outline: none;
  transition: border-color 200ms ease, box-shadow 200ms ease,
              background 200ms ease;
  resize: vertical;
}

.greet-input::placeholder {
  color: hsl(var(--muted, 0 0% 53%) / 0.8);
}

.greet-input:hover:not(:disabled) {
  border-color: rgba(var(--accent-rgb, 78, 133, 191), 0.4);
}

.greet-input:focus:not(:disabled) {
  border-color: rgba(var(--accent-rgb, 78, 133, 191), 0.75);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb, 78, 133, 191), 0.15);
}

.greet-input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* 第一个框矮、第二个框高 —— 这就是需求里的"第一个较矮、第二个稍高" */
.greet-field-nick .greet-input {
  min-height: 2.75rem;
}

.greet-textarea {
  min-height: 8.5rem;
  line-height: 1.65;
}

/* 字数计数 */
.greet-counter {
  align-self: flex-end;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: hsl(var(--muted, 0 0% 53%));
  font-variant-numeric: tabular-nums;
}

.greet-counter.is-near {
  color: var(--warn, #f59e0b);
}

/* 之前发过的提醒 */
.greet-mine {
  margin: 0;
  padding: 0.5rem 0.75rem;
  border-radius: 0.7rem;
  border: 1px dashed hsl(var(--stroke, 0 0% 12%));
  font-size: 0.75rem;
  line-height: 1.5;
  color: hsl(var(--muted, 0 0% 53%));
}

/* 错误行 */
.greet-error {
  min-height: 1.1rem;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--danger, #ef4444);
  opacity: 0;
  transition: opacity 200ms ease;
}

.greet-error.is-on {
  opacity: 1;
}

/* ============================================================
   6. 按钮
   ============================================================ */
.greet-actions {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.35rem;
}

.greet-btn {
  flex: 1 1 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.9rem;
  padding: 0.75rem 1.1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 200ms ease, background 200ms ease,
              color 200ms ease, border-color 200ms ease, opacity 200ms ease;
}

.greet-btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* 取消：描边幽灵按钮 */
.greet-btn-ghost {
  border-color: hsl(var(--stroke, 0 0% 12%));
  background: transparent;
  color: hsl(var(--muted, 0 0% 53%));
}

.greet-btn-ghost:hover:not(:disabled) {
  color: hsl(var(--text, 0 0% 96%));
  border-color: rgba(var(--accent-rgb, 78, 133, 191), 0.45);
}

/* 提交：实心近白（和全站主按钮一致） */
.greet-btn-primary {
  background: hsl(var(--text, 0 0% 96%));
  color: hsl(var(--bg, 0 0% 4%));
}

.greet-btn-primary:hover:not(:disabled) {
  transform: scale(1.02);
}

.greet-btn-primary:active:not(:disabled) {
  transform: scale(0.99);
}

.greet-btn:focus-visible {
  outline: 2px solid rgba(var(--accent-rgb, 78, 133, 191), 0.8);
  outline-offset: 2px;
}

/* 提交中：按钮前面转个小圈 */
.greet-btn.is-busy::before {
  content: '';
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
  border: 2px solid rgba(0, 0, 0, 0.18);
  border-top-color: hsl(var(--bg, 0 0% 4%));
  animation: greet-spin 0.7s linear infinite;
}

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

/* ============================================================
   7. 成功态
   ============================================================ */
.greet-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0.5rem 0 0.25rem;
  animation: greet-success-in 420ms cubic-bezier(0.2, 0.9, 0.4, 1) both;
}

@keyframes greet-success-in {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

.greet-check {
  width: 3.5rem;
  height: 3.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.1rem;
  border-radius: 50%;
  border: 1px solid rgba(74, 222, 128, 0.35);
  background: rgba(74, 222, 128, 0.12);
  color: var(--success, #4ade80);
  font-size: 1.6rem;
  line-height: 1;
  box-shadow: 0 0 0 6px rgba(74, 222, 128, 0.06);
}

.greet-success-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: hsl(var(--text, 0 0% 96%));
  margin-bottom: 0.5rem;
}

.greet-success-text {
  font-size: 0.875rem;
  line-height: 1.7;
  color: hsl(var(--muted, 0 0% 53%));
  max-width: 24rem;
}

.greet-success-who {
  margin-top: 0.6rem;
  font-size: 0.8125rem;
  color: rgba(var(--accent-rgb, 78, 133, 191), 1);
}

.greet-success .greet-actions {
  width: 100%;
  margin-top: 1.5rem;
}

/* ============================================================
   8. 窄屏
   ============================================================ */
@media (max-width: 520px) {
  .greet-overlay {
    padding: 0.75rem;
    align-items: flex-end;   /* 手机上从底部上来，拇指够得着 */
  }

  .greet-panel {
    padding: 1.6rem 1.25rem 1.25rem;
    border-radius: 1.5rem;
    max-height: calc(100dvh - 1.5rem);
  }

  .greet-panel::before {
    left: 1.25rem;
    right: 1.25rem;
  }

  .greet-overlay.is-on .greet-panel {
    transform: none;
  }

  .greet-panel {
    transform: translateY(28px);
  }

  .greet-title {
    font-size: 1.4rem;
  }

  .greet-desc {
    font-size: 0.84rem;
    margin-bottom: 1.25rem;
  }

  .greet-textarea {
    min-height: 7rem;
  }

  /* 两个按钮在窄屏拉满，避免误触 */
  .greet-actions {
    flex-direction: column-reverse;   /* 主按钮在上面 */
  }

  .greet-btn {
    width: 100%;
    min-height: 44px;
  }
}

/* 横屏很矮的手机：让面板整体更紧凑 */
@media (orientation: landscape) and (max-height: 520px) {
  .greet-overlay {
    align-items: center;
    padding: 0.5rem;
  }

  .greet-panel {
    max-height: calc(100dvh - 1rem);
    padding: 1.25rem 1.4rem 1rem;
  }

  .greet-desc {
    margin-bottom: 0.9rem;
  }

  .greet-textarea {
    min-height: 5rem;
  }
}

/* ============================================================
   9. 减少动态效果
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .greet-overlay,
  .greet-panel,
  .greet-success {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .greet-btn-primary:hover:not(:disabled) {
    transform: none;
  }

  .greet-btn.is-busy::before {
    animation-duration: 1.4s;
  }
}