/* ============================================================
   管理后台样式
   ============================================================ */

:root {
    --a-bg: #0a0c14;
    --a-panel: #11131f;
    --a-panel-2: #171a28;
    --a-border: rgba(255, 255, 255, 0.08);
    --a-border-2: rgba(255, 255, 255, 0.14);
    --a-text: #eef0f7;
    --a-soft: #a2a8bd;
    --a-dim: #6b7185;
    --a-accent: #6c5ce7;
    --a-accent-2: #00d2ff;
    --a-ok: #38e07b;
    --a-err: #ff5c7a;
    --a-radius: 16px;
    --a-font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

body {
    font-family: var(--a-font);
    background: var(--a-bg);
    color: var(--a-text);
    font-size: 14.5px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; color: inherit; }

::selection { background: rgba(108, 92, 231, 0.4); }
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: #0a0c14; }
::-webkit-scrollbar-thumb { background: #2b2f42; border-radius: 8px; border: 2px solid #0a0c14; }

/* -------- 登录页 -------- */

.login-wrap {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(900px 600px at 15% 0%, rgba(108, 92, 231, 0.3), transparent 60%),
        radial-gradient(800px 600px at 85% 100%, rgba(0, 210, 255, 0.18), transparent 60%),
        var(--a-bg);
}

.login-card {
    width: min(410px, 100%);
    padding: 42px 38px;
    border-radius: 22px;
    background: rgba(20, 22, 34, 0.82);
    border: 1px solid var(--a-border-2);
    backdrop-filter: blur(24px);
    box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.9);
    position: relative;
    z-index: 2;
}

.login-logo {
    width: 52px; height: 52px;
    border-radius: 15px;
    display: grid;
    place-items: center;
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, var(--a-accent), var(--a-accent-2));
    box-shadow: 0 14px 34px -14px rgba(108, 92, 231, 1);
    margin-bottom: 24px;
}

.login-card h1 { font-size: 1.4rem; font-weight: 700; margin-bottom: 6px; letter-spacing: -0.01em; }
.login-card p.sub { color: var(--a-dim); font-size: 13.5px; margin-bottom: 28px; }

/* -------- 表单控件 -------- */

.fld { margin-bottom: 16px; }
.fld > label {
    display: block;
    font-size: 12.5px;
    color: var(--a-soft);
    margin-bottom: 7px;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.inp,
textarea.inp,
select.inp {
    width: 100%;
    padding: 11px 14px;
    border-radius: 11px;
    border: 1px solid var(--a-border);
    background: rgba(255, 255, 255, 0.035);
    color: var(--a-text);
    font-size: 14px;
    outline: none;
    transition: all 0.25s ease;
    resize: vertical;
}

.inp::placeholder { color: var(--a-dim); }

.inp:focus {
    border-color: rgba(108, 92, 231, 0.75);
    background: rgba(108, 92, 231, 0.07);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.13);
}

textarea.inp { min-height: 110px; line-height: 1.7; font-family: var(--a-font); }
textarea.code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; min-height: 260px; }

.hint { font-size: 12px; color: var(--a-dim); margin-top: 5px; }

/* -------- 按钮 -------- */

.btn-a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 10px 20px;
    border-radius: 11px;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
    font-family: var(--a-font);
}

.btn-primary-a {
    color: #fff;
    background: linear-gradient(135deg, var(--a-accent), #8b7cf6);
    box-shadow: 0 12px 26px -14px rgba(108, 92, 231, 1);
}

.btn-primary-a:hover { transform: translateY(-1px); box-shadow: 0 16px 32px -14px rgba(108, 92, 231, 1); }

.btn-ghost-a {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--a-border-2);
    color: var(--a-text);
}

.btn-ghost-a:hover { background: rgba(255, 255, 255, 0.1); }

.btn-danger-a {
    background: rgba(255, 92, 122, 0.12);
    border-color: rgba(255, 92, 122, 0.35);
    color: #ff98ab;
}

.btn-danger-a:hover { background: rgba(255, 92, 122, 0.2); }

.btn-sm { padding: 6px 13px; font-size: 13px; border-radius: 9px; }

.btn-block { width: 100%; }

/* -------- 布局 -------- */

.app { display: grid; grid-template-columns: 250px 1fr; min-height: 100vh; }

.side {
    background: #0c0e18;
    border-right: 1px solid var(--a-border);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.side-brand {
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 6px 10px 22px;
    border-bottom: 1px solid var(--a-border);
    margin-bottom: 18px;
}

.side-logo {
    width: 38px; height: 38px;
    border-radius: 11px;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: 16px;
    color: #fff;
    background: linear-gradient(135deg, var(--a-accent), var(--a-accent-2));
    flex-shrink: 0;
}

.side-brand-name { font-weight: 700; font-size: 15px; line-height: 1.3; }
.side-brand-sub { font-size: 11.5px; color: var(--a-dim); }

.side-nav { display: grid; gap: 3px; flex: 1; }

.side-link {
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 10px 13px;
    border-radius: 10px;
    color: var(--a-soft);
    font-size: 14px;
    transition: all 0.22s ease;
}

.side-link:hover { background: rgba(255, 255, 255, 0.05); color: var(--a-text); }

.side-link.active {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.22), rgba(0, 210, 255, 0.08));
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(108, 92, 231, 0.35);
}

.side-link svg { width: 17px; height: 17px; flex-shrink: 0; opacity: 0.9; }

.side-badge {
    margin-left: auto;
    padding: 1px 8px;
    border-radius: 100px;
    background: var(--a-err);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    line-height: 1.7;
}

.side-foot { padding-top: 16px; border-top: 1px solid var(--a-border); margin-top: 16px; }

/* -------- 主区域 -------- */

.main { padding: 0 0 60px; min-width: 0; }

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 20px 34px;
    border-bottom: 1px solid var(--a-border);
    background: rgba(10, 12, 20, 0.8);
    backdrop-filter: blur(16px);
    position: sticky;
    top: 0;
    z-index: 20;
    flex-wrap: wrap;
}

.topbar h1 { font-size: 1.2rem; font-weight: 700; letter-spacing: -0.01em; }
.topbar-sub { font-size: 12.5px; color: var(--a-dim); }

.topbar-actions { display: flex; align-items: center; gap: 10px; }

.content { padding: 30px 34px; max-width: 1180px; }

/* -------- 卡片与表格 -------- */

.panel {
    background: var(--a-panel);
    border: 1px solid var(--a-border);
    border-radius: var(--a-radius);
    overflow: hidden;
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 24px;
    border-bottom: 1px solid var(--a-border);
    flex-wrap: wrap;
}

.panel-title { font-weight: 700; font-size: 15px; }
.panel-body { padding: 24px; }

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 26px;
}

.stat-card {
    padding: 22px;
    border-radius: var(--a-radius);
    background: var(--a-panel);
    border: 1px solid var(--a-border);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.stat-card:hover { border-color: var(--a-border-2); transform: translateY(-2px); }

.stat-card::after {
    content: "";
    position: absolute;
    right: -30px; top: -30px;
    width: 100px; height: 100px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.22), transparent 70%);
}

.stat-k { font-size: 12.5px; color: var(--a-dim); margin-bottom: 8px; letter-spacing: 0.04em; }
.stat-v { font-size: 1.9rem; font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; }

.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th {
    text-align: left;
    padding: 12px 24px;
    font-size: 12px;
    color: var(--a-dim);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--a-border);
    background: rgba(255, 255, 255, 0.02);
    white-space: nowrap;
}
.table td { padding: 14px 24px; border-bottom: 1px solid var(--a-border); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: rgba(255, 255, 255, 0.022); }
.table .t-title { font-weight: 600; }
.table .t-sub { font-size: 12.5px; color: var(--a-dim); }

.row-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* 状态徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 11px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid;
    white-space: nowrap;
}

.badge-ok { color: #7ef0a8; background: rgba(56, 224, 123, 0.1); border-color: rgba(56, 224, 123, 0.3); }
.badge-off { color: var(--a-dim); background: rgba(255, 255, 255, 0.05); border-color: var(--a-border); }
.badge-new { color: #ffd07a; background: rgba(255, 176, 32, 0.12); border-color: rgba(255, 176, 32, 0.32); }

/* 提示条 */
.alert {
    padding: 13px 18px;
    border-radius: 12px;
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    gap: 10px;
    align-items: center;
    border: 1px solid;
}

.alert-success { background: rgba(56, 224, 123, 0.09); border-color: rgba(56, 224, 123, 0.3); color: #8ef2b4; }
.alert-error { background: rgba(255, 92, 122, 0.1); border-color: rgba(255, 92, 122, 0.32); color: #ffa3b3; }

/* 两列表单 */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.thumb {
    width: 56px; height: 40px;
    border-radius: 8px;
    object-fit: cover;
    border: 1px solid var(--a-border);
    background: var(--a-panel-2);
    display: grid;
    place-items: center;
    font-size: 13px;
    color: var(--a-dim);
    flex-shrink: 0;
}

.avatar-preview {
    width: 88px; height: 88px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--a-border-2);
    background: linear-gradient(135deg, var(--a-accent), var(--a-accent-2));
    display: grid;
    place-items: center;
    font-size: 30px;
    font-weight: 800;
    color: #fff;
}

/* 上传区域 */
.uploader {
    border: 1.5px dashed var(--a-border-2);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    color: var(--a-dim);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.25s ease;
}

.uploader:hover { border-color: rgba(108, 92, 231, 0.6); color: var(--a-soft); background: rgba(108, 92, 231, 0.05); }

/* 空状态 */
.empty {
    padding: 56px 24px;
    text-align: center;
    color: var(--a-dim);
}

.empty-icon { font-size: 2.4rem; margin-bottom: 12px; opacity: 0.5; }

/* 留言卡片 */
.msg-list { display: grid; gap: 12px; }

.msg {
    padding: 20px 22px;
    border-radius: 14px;
    background: var(--a-panel);
    border: 1px solid var(--a-border);
    transition: all 0.25s ease;
}

.msg.unread { border-color: rgba(108, 92, 231, 0.45); background: rgba(108, 92, 231, 0.06); }
.msg-head { display: flex; justify-content: space-between; gap: 14px; align-items: flex-start; flex-wrap: wrap; margin-bottom: 10px; }
.msg-name { font-weight: 700; }
.msg-meta { font-size: 12.5px; color: var(--a-dim); display: flex; gap: 12px; flex-wrap: wrap; }
.msg-body { color: var(--a-soft); font-size: 14px; white-space: pre-wrap; word-break: break-word; }

/* 响应式 */
@media (max-width: 900px) {
    .app { grid-template-columns: 1fr; }
    .side {
        position: static;
        height: auto;
        flex-direction: row;
        align-items: center;
        padding: 12px 16px;
        overflow-x: auto;
        gap: 12px;
        border-right: none;
        border-bottom: 1px solid var(--a-border);
    }
    .side-brand { padding: 0; border: none; margin: 0; flex-shrink: 0; }
    .side-brand-name, .side-brand-sub { display: none; }
    .side-nav { display: flex; gap: 4px; }
    .side-link { white-space: nowrap; padding: 8px 12px; }
    .side-link span.label { display: none; }
    .side-foot { display: none; }
    .topbar { padding: 16px 18px; }
    .content { padding: 20px 18px; }
    .table th, .table td { padding: 11px 14px; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
}