/* ============================================================
   css/chat/chat-capsule.css — 时间胶囊聊天侧样式
   到期提醒框（UI 系统框）+ 邀请/封存卡微调
   挂载于 #tab-chat（position: relative），absolute 定位在顶部
   ============================================================ */

/* === 到期提醒框 === */
.capsule-due-box {
    position: absolute; top: 14px; left: 14px; right: 14px; z-index: 30;
    background: var(--surface); border: 1px solid var(--gold);
    border-radius: 16px; padding: 18px 16px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    opacity: 0; transform: translateY(-12px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}
.capsule-due-box.show { opacity: 1; transform: translateY(0); }
.capsule-due-box .cdb-decor {
    font-family: var(--font-display); font-style: italic; font-size: 12px;
    color: var(--gold); margin-bottom: 6px; letter-spacing: 0.05em;
}
.capsule-due-box .cdb-title {
    font-family: var(--font-body); font-size: 15px; font-weight: 600;
    color: var(--text-primary); line-height: 1.5;
}
.capsule-due-box .cdb-sub { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }
.capsule-due-box .cdb-btns { display: flex; gap: 10px; margin-top: 14px; justify-content: center; }
.capsule-due-box .cdb-btns button {
    padding: 8px 20px; border: none; border-radius: 18px;
    font-family: var(--font-body); font-size: 13px; cursor: pointer; transition: all 0.2s;
}
.capsule-due-box .cdb-open { background: var(--gold); color: #fff; box-shadow: var(--shadow-xs), var(--shadow-sm); }
.capsule-due-box .cdb-open:hover { filter: brightness(1.05); transform: translateY(-1px); }
.capsule-due-box .cdb-close { background: var(--border-faint); color: var(--text-secondary); }

/* === 邀请/封存卡：时空胶囊专属卡（与日记「纸」区分，主题色感知） === */
/* 蜡封 + 星尘 + 主题色：一瓶封存的时空 */
.capsule-bubble-card {
    position: relative;
    max-width: 280px;
    cursor: pointer;
    border-radius: 20px 20px 20px 7px;
    padding: 14px 16px 13px;
    background:
        radial-gradient(95% 72% at 50% -12%, var(--accent-light), transparent 56%),
        linear-gradient(180deg, var(--bg-secondary), var(--bg-secondary));
    border: 1px solid var(--accent-light);
    box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255,255,255,0.5);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
}
.capsule-bubble-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,0.5); }
.capsule-bubble-card:active { transform: translateY(0) scale(0.98); }
/* 顶部星尘光带（时空感） */
.capsule-bubble-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.5;
}
/* 一侧星尘小点 */
.capsule-bubble-card::after {
    content: ''; position: absolute; top: 34px; right: 14px;
    width: 22px; height: 22px;
    background-image:
        radial-gradient(circle, var(--accent) 1.2px, transparent 1.4px),
        radial-gradient(circle, var(--accent) 1px, transparent 1.2px),
        radial-gradient(circle, var(--accent) 1.4px, transparent 1.6px);
    background-size: 10px 10px, 14px 14px, 8px 8px;
    background-position: 0 0, 5px 7px, 2px 12px;
    opacity: 0.4;
    pointer-events: none;
}
/* 蜡封圆盘（从卡顶探出一半） */
.cbw-seal {
    width: 40px; height: 40px; border-radius: 50%;
    margin: -22px auto 7px;
    position: relative; z-index: 1;
    display: flex; align-items: center; justify-content: center;
    background: radial-gradient(circle at 34% 28%, var(--accent-hover), var(--accent) 58%, var(--accent-hover));
    box-shadow: 0 3px 10px rgba(0,0,0,0.16), inset 0 1px 2px rgba(255,255,255,0.45);
}
.cbw-seal::after {
    content: ''; position: absolute; inset: 5px; border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.4);
}
.cbw-deco {
    font-family: var(--font-display); font-style: italic; font-size: 11px;
    color: var(--accent); opacity: 0.82; text-align: center; letter-spacing: 0.08em;
}
.cbw-title {
    font-family: var(--font-body); font-size: 14px; font-weight: 600;
    color: var(--text-primary); text-align: center; line-height: 1.5; margin-top: 3px;
}
.cbw-theme {
    font-size: 13px; font-weight: 500; color: var(--accent); text-align: center;
    margin-top: 6px; letter-spacing: 0.02em;
}
.cbw-sealmsg {
    font-family: var(--font-display); font-style: italic; font-size: 12px;
    color: var(--text-secondary); text-align: center; line-height: 1.6; margin-top: 6px;
}
.cbw-meta {
    font-size: 11px; color: var(--text-secondary); text-align: center; margin-top: 8px;
    letter-spacing: 0.4px;
}
.cbw-btn {
    display: block; margin: 12px auto 0; padding: 8px 26px; border-radius: 20px;
    background: var(--accent); color: #fff; font-family: var(--font-body);
    font-size: 12px; border: none; cursor: pointer; transition: all 0.2s;
}
.cbw-btn:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow-xs), var(--shadow-sm); }
.cbw-btn:active { transform: scale(0.96); }
/* 深色模式 */
[data-theme-mode="dark"] .capsule-bubble-card {
    background:
        radial-gradient(95% 72% at 50% -12%, var(--accent-light), transparent 56%),
        linear-gradient(180deg, var(--bg-secondary), var(--bg-secondary));
}
/* 窄屏 */
@media (max-width: 370px) {
    .capsule-bubble-card { max-width: 220px; padding: 12px 13px 12px; }
    .cbw-seal { width: 34px; height: 34px; margin-top: -19px; }
}

/* === 聊天内时间胶囊详情浮层（需求14） === */
.chat-capsule-overlay {
    position: absolute; inset: 0; z-index: 1560;
    opacity: 0; transition: opacity 0.22s ease;
    pointer-events: none;
}
.chat-capsule-overlay.show {
    opacity: 1; transition: none;
    animation: chatCapsuleFadeIn 0.26s ease-out;
    pointer-events: auto;
}
@keyframes chatCapsuleFadeIn { from { opacity: 0; } to { opacity: 1; } }
.chat-capsule-mask {
    position: absolute; inset: 0;
    background: rgba(30,28,26,0.42);
}
.chat-capsule-sheet {
    position: absolute; left: 14px; right: 14px; top: 52px; bottom: 26px;
    background: var(--bg-primary); border-radius: 16px;
    box-shadow: var(--shadow-lg); border: 1px solid var(--border);
    display: flex; flex-direction: column; overflow: hidden;
}
.chat-capsule-top {
    flex-shrink: 0; display: flex; align-items: center; justify-content: flex-end;
    padding: 8px 12px 4px;
}
.chat-capsule-close {
    width: 30px; height: 30px; border-radius: 50%;
    border: 1px solid var(--border); background: var(--surface); color: var(--text-secondary);
    display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
    transition: all 0.2s;
}
.chat-capsule-close:hover { border-color: var(--rose); color: var(--rose); transform: rotate(90deg); }
.chat-capsule-close:active { transform: rotate(90deg) scale(0.9); }
.chat-capsule-body {
    flex: 1; min-height: 0; overflow-y: auto; padding: 4px 14px 18px;
    scrollbar-gutter: stable;
}
.chat-capsule-loading, .chat-capsule-missing {
    flex: 1; display: flex; align-items: center; justify-content: center;
    color: var(--text-muted); font-size: 13px; padding-bottom: 40px;
}

/* === 窄屏适配 === */
@media (max-width: 370px) {
    .capsule-due-box { left: 10px; right: 10px; padding: 14px 12px; }
    .capsule-due-box .cdb-title { font-size: 14px; }
}