/* 点卡充值系统 - PHP5.6 */
:root {
    --bg: #0f1419;
    --bg-soft: #1a222c;
    --panel: #1e2833;
    --line: #2c3a4a;
    --text: #e8eef4;
    --muted: #8b9aab;
    --accent: #3d9a78;
    --accent-hover: #48b089;
    --danger: #c45c5c;
    --ok: #3d9a78;
    --warn: #c9a227;
    --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* Login */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(ellipse at 20% 10%, rgba(61,154,120,.18), transparent 50%),
        radial-gradient(ellipse at 80% 90%, rgba(44,90,120,.2), transparent 45%),
        var(--bg);
}
.login-box {
    width: 100%;
    max-width: 380px;
    background: var(--panel);
    border: 1px solid var(--line);
    padding: 36px 32px;
    border-radius: 4px;
}
.login-box h1 { margin: 0 0 4px; font-size: 22px; font-weight: 600; }
.login-sub { margin: 0 0 24px; color: var(--muted); font-size: 14px; }
.login-tip { margin-top: 16px; font-size: 12px; color: var(--muted); text-align: center; }

/* Admin layout */
.admin-body { display: flex; min-height: 100vh; }
.sidebar {
    width: 220px;
    background: #121820;
    border-right: 1px solid var(--line);
    flex-shrink: 0;
}
.sidebar .brand {
    padding: 22px 20px;
    font-weight: 700;
    font-size: 15px;
    border-bottom: 1px solid var(--line);
    letter-spacing: .02em;
}
.sidebar nav { padding: 12px 0; display: flex; flex-direction: column; }
.sidebar nav a {
    color: var(--muted);
    padding: 11px 20px;
    font-size: 14px;
    border-left: 3px solid transparent;
}
.sidebar nav a:hover { color: var(--text); background: rgba(255,255,255,.03); }
.sidebar nav a.active {
    color: var(--text);
    background: rgba(61,154,120,.1);
    border-left-color: var(--accent);
}

.main {
    flex: 1;
    padding: 28px 32px;
    overflow-x: auto;
    background:
        linear-gradient(180deg, rgba(61,154,120,.04), transparent 180px),
        var(--bg);
}

.page-head { margin-bottom: 22px; }
.page-head h1 { margin: 0 0 6px; font-size: 24px; font-weight: 600; }
.page-head p { margin: 0; color: var(--muted); font-size: 14px; }

.card-panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 22px;
    margin-bottom: 20px;
}
.card-panel.narrow { max-width: 480px; }
.card-panel h2 {
    margin: 0 0 16px;
    font-size: 16px;
    font-weight: 600;
}
.card-panel h2.mt { margin-top: 28px; }

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
}
@media (max-width: 960px) {
    .grid-2 { grid-template-columns: 1fr; }
    .admin-body { flex-direction: column; }
    .sidebar { width: 100%; }
    .sidebar nav { flex-direction: row; flex-wrap: wrap; }
    .sidebar nav a { border-left: none; border-bottom: 2px solid transparent; }
    .sidebar nav a.active { border-bottom-color: var(--accent); border-left: none; }
    .main { padding: 18px; }
}

label {
    display: block;
    margin: 12px 0 6px;
    font-size: 13px;
    color: var(--muted);
}
input[type="text"],
input[type="password"],
select,
textarea {
    width: 100%;
    background: var(--bg-soft);
    border: 1px solid var(--line);
    color: var(--text);
    padding: 10px 12px;
    font-size: 14px;
    border-radius: 3px;
    font-family: inherit;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
}
textarea { resize: vertical; min-height: 120px; }

.btn {
    display: inline-block;
    border: none;
    cursor: pointer;
    padding: 10px 18px;
    font-size: 14px;
    border-radius: 3px;
    font-family: inherit;
    margin-top: 16px;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost {
    background: transparent;
    color: var(--muted);
    border: 1px solid var(--line);
    margin-left: 8px;
}
.btn-block { width: 100%; display: block; text-align: center; }
.form-actions { margin-top: 8px; }

.alert {
    padding: 12px 14px;
    border-radius: 3px;
    margin-bottom: 16px;
    font-size: 14px;
}
.alert-success {
    background: rgba(61,154,120,.15);
    border: 1px solid rgba(61,154,120,.35);
    color: #8fd4b8;
}
.alert-error {
    background: rgba(196,92,92,.15);
    border: 1px solid rgba(196,92,92,.35);
    color: #e8a0a0;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-bottom: 20px;
}
@media (max-width: 800px) {
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
}
.stat-item {
    background: var(--panel);
    border: 1px solid var(--line);
    padding: 18px;
    border-radius: 4px;
}
.stat-num { font-size: 28px; font-weight: 700; }
.stat-label { color: var(--muted); font-size: 13px; margin-top: 4px; }

.quick-links { display: flex; flex-wrap: wrap; gap: 10px; }
.quick-links a {
    display: inline-block;
    padding: 10px 16px;
    background: var(--bg-soft);
    border: 1px solid var(--line);
    color: var(--text);
    border-radius: 3px;
    font-size: 14px;
}
.quick-links a:hover { border-color: var(--accent); color: var(--accent); }

.table-wrap { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
th, td {
    padding: 10px 8px;
    text-align: left;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}
th { color: var(--muted); font-weight: 500; }
.row-active { background: rgba(61,154,120,.08); }
.muted { color: var(--muted); }
.hint { color: var(--muted); font-size: 14px; margin: 0 0 12px; }
.ops a, .ops .link-btn { margin-right: 8px; }
.inline { display: inline; }
.link-btn {
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    padding: 0;
    font-size: inherit;
    font-family: inherit;
}
.link-btn.danger, .danger { color: var(--danger); }
.link-btn.warning, .warning { color: var(--warn); }

.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 2px;
    font-size: 12px;
}
.tag.ok { background: rgba(61,154,120,.2); color: #8fd4b8; }
.tag.off { background: rgba(139,154,171,.15); color: var(--muted); }
.tag.used { background: rgba(196,92,92,.2); color: #e8a0a0; }
.tag.left { background: rgba(61,154,120,.2); color: #8fd4b8; }

.pager {
    margin-top: 16px;
    display: flex;
    gap: 16px;
    align-items: center;
    color: var(--muted);
    font-size: 14px;
}

/* Frontend */
.front-body {
    background:
        radial-gradient(ellipse at 50% 0%, rgba(61,154,120,.2), transparent 55%),
        radial-gradient(ellipse at 100% 100%, rgba(40,70,100,.25), transparent 40%),
        linear-gradient(165deg, #0c1218 0%, #152028 50%, #0f1419 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 16px;
}
.front-wrap {
    width: 100%;
    max-width: 440px;
}
.front-hero {
    text-align: center;
    margin-bottom: 28px;
}
.front-brand {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: .04em;
    margin-bottom: 8px;
}
.front-desc {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
}
.front-panel {
    background: rgba(30,40,51,.92);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 28px 24px;
    backdrop-filter: blur(6px);
}
.front-panel .btn-primary {
    margin-top: 22px;
    padding: 12px;
    font-size: 15px;
}