/* ============================================================
   Flying Log · interact.css —— 文章互动（悬浮操作条 + 评论抽屉）
   设计语言沿用 style.css：工程蓝图底 × Java 橙 × 终端墨绿
   ============================================================ */

/* ---------- 左侧悬浮操作条（参考图1） ---------- */
.interact-rail {
  position: fixed;
  left: max(20px, calc(50vw - 590px - 86px));
  top: 50%;
  transform: translateY(-50%);
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
/* 视口不够宽时收起，避免遮挡正文 */
@media (max-width: 1330px) { .interact-rail { display: none; } }

.rail-btn {
  position: relative;
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 1px solid var(--line-soft);
  background: var(--card);
  color: var(--ink-soft);
  cursor: pointer;
  display: grid; place-items: center;
  box-shadow: var(--shadow-1);
  transition: transform .16s ease, color .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.rail-btn:hover {
  transform: translateY(-2px);
  color: var(--orange);
  border-color: #f3c89a;
  box-shadow: var(--shadow-2);
}
.rail-btn.active { color: var(--orange); }
.rail-btn.active svg path { fill: var(--orange); }

.rail-badge {
  position: absolute;
  top: -7px; right: -9px;
  min-width: 24px; height: 19px;
  padding: 0 6px;
  border-radius: 10px;
  background: #dfe5eb;
  color: #63738a;
  font: 600 11px/19px var(--font-mono);
  text-align: center;
  transition: background .16s ease, color .16s ease;
}
.rail-btn:hover .rail-badge,
.rail-btn.active .rail-badge {
  background: var(--orange-soft);
  color: var(--orange-deep);
}

/* ---------- 评论抽屉（参考图2） ---------- */
.cmt-mask {
  position: fixed; inset: 0;
  background: rgba(21, 32, 46, .38);
  backdrop-filter: blur(2px);
  z-index: 300;
  animation: cmtFade .18s ease;
}
@keyframes cmtFade { from { opacity: 0; } to { opacity: 1; } }

.cmt-drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: min(480px, 94vw);
  background: var(--card);
  border-left: 1px solid var(--line);
  box-shadow: -18px 0 48px -22px rgba(21, 32, 46, .35);
  z-index: 301;
  display: flex;
  flex-direction: column;
  animation: cmtSlide .24s cubic-bezier(.22, 1, .36, 1);
}
@keyframes cmtSlide { from { transform: translateX(30px); opacity: .4; } to { transform: none; opacity: 1; } }
body.cmt-lock { overflow: hidden; }

.cmt-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--line-soft);
}
.cmt-head h3 {
  font: 700 18px var(--font-display);
  color: var(--ink);
}
.cmt-head-count { color: var(--orange); font-size: 15px; margin-left: 4px; }
.cmt-close {
  width: 32px; height: 32px;
  border: none; border-radius: 50%;
  background: transparent;
  color: var(--ink-faint);
  cursor: pointer;
  display: grid; place-items: center;
  transition: background .15s ease, color .15s ease;
}
.cmt-close:hover { background: var(--paper); color: var(--ink); }

/* 输入区 */
.cmt-composer {
  display: flex; gap: 12px;
  padding: 16px 22px 6px;
}
.cmt-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex: none;
  background: var(--paper);
}
.cmt-avatar-char {
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--orange), #ffb15e);
  color: #fff;
  font: 700 16px var(--font-mono);
}
.cmt-composer-box {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fafbfc;
  padding: 10px 12px 8px;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.cmt-composer-box:focus-within {
  border-color: #f0b678;
  box-shadow: 0 0 0 3px rgba(231, 111, 0, .08);
}
.cmt-input {
  width: 100%;
  border: none; outline: none; resize: none;
  background: transparent;
  font: 400 14px/1.6 var(--font-body);
  color: var(--ink);
}
.cmt-input::placeholder { color: var(--ink-faint); }
.cmt-composer-foot {
  display: flex; align-items: center; justify-content: flex-end;
  gap: 12px;
  margin-top: 4px;
}
.cmt-replying {
  margin-right: auto;
  font-size: 11.5px;
  color: var(--orange-deep);
  display: inline-flex; align-items: center; gap: 6px;
}
.cmt-cancel-reply {
  border: none; background: none; cursor: pointer;
  color: var(--ink-faint); font-size: 11px;
}
.cmt-cancel-reply:hover { color: var(--ink); }
.cmt-counter { font-size: 12px; color: var(--ink-faint); }
.cmt-send {
  border: none;
  border-radius: 8px;
  padding: 7px 20px;
  background: linear-gradient(135deg, var(--orange), #f08a1d);
  color: #fff;
  font: 600 13.5px var(--font-body);
  cursor: pointer;
  transition: opacity .15s ease, transform .15s ease;
}
.cmt-send:hover { opacity: .92; transform: translateY(-1px); }
.cmt-send:disabled { opacity: .5; cursor: default; transform: none; }

/* Tab：最热 / 最新 */
.cmt-tabs {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 22px 10px;
  border-bottom: 1px solid var(--line-soft);
}
.cmt-tab {
  border: none; background: none;
  font: 600 13.5px var(--font-mono);
  color: var(--ink-faint);
  cursor: pointer;
  padding: 2px 0;
}
.cmt-tab:hover { color: var(--ink-soft); }
.cmt-tab.active { color: var(--ink); }
.cmt-tab.active::after {
  content: "";
  display: block;
  height: 2px; border-radius: 2px;
  margin-top: 3px;
  background: var(--orange);
}
.cmt-tab-sep { color: var(--line); font-size: 12px; }

/* 评论列表 */
.cmt-list {
  flex: 1;
  overflow-y: auto;
  padding: 6px 22px 26px;
}
.cmt-empty {
  text-align: center;
  color: var(--ink-faint);
  font-size: 12.5px;
  padding: 44px 0;
}
.cmt-thread { padding: 14px 0; border-bottom: 1px solid var(--line-soft); }
.cmt-thread:last-child { border-bottom: none; }

.cmt-item {
  display: flex; gap: 12px;
  align-items: flex-start;
}
.cmt-item .cmt-avatar { width: 38px; height: 38px; font-size: 15px; }
.cmt-main { flex: 1; min-width: 0; }
.cmt-meta { display: flex; align-items: center; gap: 8px; }
.cmt-name {
  font: 600 13.5px var(--font-body);
  color: var(--ink-soft);
}
.cmt-mine-tag {
  font-size: 10px;
  color: var(--orange-deep);
  background: var(--orange-soft);
  border-radius: 4px;
  padding: 1px 5px;
}
.cmt-reply-to { color: var(--ink-faint); font-size: 13px; margin-right: 4px; }
.cmt-reply-to b { color: var(--blue); font-weight: 600; }
.cmt-content {
  font: 400 14.5px/1.7 var(--font-body);
  color: var(--ink);
  margin: 4px 0 6px;
  word-break: break-word;
  white-space: pre-wrap;
}
.cmt-actions {
  display: flex; align-items: center; gap: 16px;
  font-size: 12px;
  color: var(--ink-faint);
}
.cmt-time { font-size: 12px; }
.cmt-act {
  display: inline-flex; align-items: center; gap: 5px;
  border: none; background: none;
  color: var(--ink-faint);
  font: 500 12px var(--font-body);
  cursor: pointer;
  padding: 0;
  transition: color .15s ease;
}
.cmt-act svg { fill: currentColor; }
.cmt-act:hover { color: var(--ink-soft); }
.cmt-act.cmt-like.active { color: var(--orange); }
.cmt-act.cmt-like.active i { color: var(--orange-deep); }
.cmt-act.cmt-del:hover { color: #c0392b; }

/* 二级回复 */
.cmt-replies {
  margin-top: 12px;
  padding-left: 50px;
  display: flex; flex-direction: column; gap: 12px;
}
.cmt-replies .cmt-item .cmt-avatar { width: 30px; height: 30px; font-size: 12.5px; }
.cmt-replies .cmt-content { font-size: 14px; }

/* 小屏：抽屉占满 */
@media (max-width: 560px) {
  .cmt-drawer { width: 100vw; }
  .cmt-replies { padding-left: 28px; }
}