/* Douyin Web 样式 */

:root {
    --primary: #fe2c55;
    --primary-dark: #e02347;
    --bg: #f7f8fa;
    --card: #ffffff;
    --text: #161823;
    --dim: #8a8b91;
    --border: #e8e9ec;
    --ok: #00c853;
    --warn: #ff9800;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
}

.hidden { display: none !important; }
.dim { color: var(--dim); font-size: 13px; }
.pad { padding: 16px; }

/* ---------- 登录页 ---------- */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.auth-card {
    width: 360px;
    background: var(--card);
    border-radius: 12px;
    padding: 40px 32px;
    box-shadow: 0 4px 24px rgba(0,0,0,.08);
    text-align: center;
}
.auth-card h1 { font-size: 26px; color: var(--primary); margin-bottom: 6px; }
.auth-card .subtitle { color: var(--dim); font-size: 13px; margin-bottom: 24px; }
.auth-card input {
    width: 100%;
    padding: 11px 14px;
    margin-bottom: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
}
.auth-card input:focus { border-color: var(--primary); }
.auth-card .msg { color: var(--primary); font-size: 13px; min-height: 18px; margin-top: 8px; }

/* ---------- 按钮 ---------- */
.btn {
    border: none;
    border-radius: 8px;
    padding: 10px 18px;
    font-size: 14px;
    cursor: pointer;
    background: #eceef1;
    color: var(--text);
    transition: all .15s;
}
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.primary.full { width: 100%; }
.btn.outline { background: transparent; border: 1px solid var(--primary); color: var(--primary); }
.btn.ghost { background: transparent; color: var(--dim); }
.btn.ghost:hover { color: var(--text); }
.btn.small { padding: 4px 10px; font-size: 12px; border-radius: 6px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- 主框架 ---------- */
.main-page { display: flex; flex-direction: column; height: 100vh; }
.topbar {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 0 24px;
    height: 56px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.logo { font-weight: 700; font-size: 18px; color: var(--primary); }
.tabs { display: flex; gap: 4px; flex: 1; }
.tab {
    position: relative;
    border: none;
    background: transparent;
    padding: 8px 18px;
    font-size: 15px;
    color: var(--dim);
    cursor: pointer;
    border-radius: 8px;
}
.tab.active { color: var(--primary); font-weight: 600; background: #fff0f3; }
.badge {
    position: absolute;
    top: 0; right: 2px;
    background: var(--primary);
    color: #fff;
    font-size: 11px;
    min-width: 16px;
    height: 16px;
    line-height: 16px;
    border-radius: 8px;
    padding: 0 4px;
}
.conv-item .badge, #badge-unread { position: static; display: inline-block; }
.user-box { display: flex; align-items: center; gap: 12px; font-size: 14px; }

.content { flex: 1; overflow: auto; padding: 20px 24px; }
.tab-panel h2 { font-size: 18px; margin-bottom: 16px; }

/* ---------- 视频卡片 ---------- */
.video-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}
.video-card {
    background: var(--card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.video-cover {
    height: 150px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    position: relative;
    display: flex; align-items: center; justify-content: center;
}
.video-cover::before { content: '▶'; font-size: 36px; color: rgba(255,255,255,.85); }
.video-cover .duration {
    position: absolute;
    right: 8px; bottom: 8px;
    background: rgba(0,0,0,.6);
    color: #fff;
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 4px;
}
.video-info { padding: 12px 14px; }
.v-title { font-weight: 600; font-size: 15px; margin-bottom: 4px; }
.v-desc { color: var(--dim); font-size: 13px; margin-bottom: 8px; }
.v-author {
    display: flex; align-items: center; justify-content: space-between;
    font-size: 13px; color: var(--dim); margin-bottom: 8px;
}
.v-stats { display: flex; gap: 14px; }
.stat-btn {
    border: none; background: transparent;
    color: var(--dim); font-size: 13px; cursor: pointer;
    display: flex; align-items: center; gap: 4px;
}
.stat-btn.active { color: var(--primary); font-weight: 600; }

.follow-btn.active { color: var(--dim) !important; border-color: var(--border); }

/* ---------- 搜索 ---------- */
.search-bar { display: flex; gap: 8px; margin-bottom: 16px; }
.search-bar input {
    flex: 1; max-width: 420px;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
}
.search-bar input:focus { border-color: var(--primary); }
.search-bar select { padding: 10px; border: 1px solid var(--border); border-radius: 8px; }
.result-row {
    display: flex; align-items: center; justify-content: space-between;
    background: var(--card);
    border-radius: 10px;
    padding: 12px 16px;
    margin-bottom: 8px;
}
.result-main { display: flex; flex-direction: column; gap: 2px; }

/* ---------- 私信 ---------- */
.msg-layout { display: flex; height: calc(100vh - 130px); background: var(--card); border-radius: 12px; overflow: hidden; }
.conv-list { width: 280px; border-right: 1px solid var(--border); overflow-y: auto; }
.conv-item {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 14px; cursor: pointer;
    border-bottom: 1px solid var(--border);
}
.conv-item:hover { background: #faf5f6; }
.conv-item.active { background: #fff0f3; }
.conv-avatar {
    width: 40px; height: 40px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #ff7a45);
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-weight: 600; flex-shrink: 0;
}
.conv-info { flex: 1; min-width: 0; }
.conv-name { font-weight: 600; font-size: 14px; }
.conv-last { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.chat-panel { flex: 1; display: flex; flex-direction: column; }
.chat-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    display: flex; align-items: center; justify-content: space-between;
}
.conn-state { font-size: 12px; color: var(--dim); font-weight: 400; }
.conn-state.ok { color: var(--ok); }
.conn-state.warn { color: var(--warn); }
.chat-body { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 8px; }
.bubble-row { display: flex; }
.bubble-row.mine { justify-content: flex-end; }
.bubble {
    max-width: 70%;
    padding: 9px 14px;
    border-radius: 14px;
    background: #f0f1f5;
    font-size: 14px;
    line-height: 1.5;
    word-break: break-all;
}
.bubble-row.mine .bubble { background: var(--primary); color: #fff; }
.chat-input {
    display: flex; gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
}
.chat-input input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
}
.chat-input input:focus { border-color: var(--primary); }

/* ---------- P2P ---------- */
.p2p-card {
    max-width: 760px;
    background: var(--card);
    border-radius: 12px;
    padding: 24px;
}
.p2p-row { display: flex; gap: 8px; margin-bottom: 12px; }
.p2p-row input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
}
.p2p-row input:focus { border-color: var(--primary); }
.hint { color: var(--dim); font-size: 13px; line-height: 1.7; margin-bottom: 12px; }
.p2p-status { font-size: 14px; font-weight: 600; color: var(--warn); margin-bottom: 12px; }
.p2p-status.ok { color: var(--ok); }
.remote-video {
    width: 100%;
    max-height: 420px;
    background: #000;
    border-radius: 8px;
    display: block;
}

/* ---------- Toast ---------- */
#toast {
    position: fixed;
    top: 70px; left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: rgba(22,24,35,.92);
    color: #fff;
    font-size: 14px;
    padding: 10px 20px;
    border-radius: 8px;
    opacity: 0;
    pointer-events: none;
    transition: all .25s;
    z-index: 999;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }