:root {
    --ink: #111114;
    --muted: #77777f;
    --line: #e9e9ee;
    --purple: #6558f5;
    --purple-dark: #4f42e0;
    --lav: #efedff;
    --surface: #ffffff;
    --bg: #f7f7fa;
    --radius: 16px;
    --radius-sm: 10px;
    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
    /* aliases used by older admin pages */
    --color-primary: #111114;
    --color-primary-dark: #111114;
    --color-accent: #6558f5;
    --color-bg: #f7f7fa;
    --color-surface: #ffffff;
    --color-text: #111114;
    --color-text-muted: #77777f;
    --color-border: #e9e9ee;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: Inter, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif; background: var(--bg); color: var(--ink); }

.admin-shell { display: flex; min-height: 100vh; }

.sidebar {
    width: 232px;
    background: #111114;
    color: #fff;
    padding: 28px 0;
    flex-shrink: 0;
}
.sidebar .brand {
    padding: 0 22px 24px;
    font-weight: 900;
    font-size: 18px;
    letter-spacing: -0.04em;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 14px;
}
.sidebar a {
    display: block;
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    padding: 12px 22px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s var(--ease);
}
.sidebar a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.sidebar a.active { background: var(--purple); color: #fff; font-weight: 700; }

.main { flex: 1; padding: 40px 44px; }
.main h1 { font-size: 28px; font-weight: 900; letter-spacing: -0.03em; margin-bottom: 28px; color: var(--ink); }

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 26px;
    margin-bottom: 20px;
}

.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 28px; }
.stat-box { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.stat-box .label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 8px; font-weight: 700; }
.stat-box .value { font-size: 28px; font-weight: 900; letter-spacing: -0.02em; color: var(--ink); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 12px; border-bottom: 1px solid var(--line); font-size: 14px; }
th { color: var(--muted); font-weight: 700; font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; }
td:first-child, th:first-child { padding-left: 0; }

.btn {
    display: inline-block;
    background: var(--ink);
    color: #fff;
    padding: 11px 20px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700;
    border: none;
    cursor: pointer;
    font-size: 14px;
    transition: opacity 0.2s var(--ease);
}
.btn:hover { opacity: 0.85; }
.btn-secondary { background: var(--bg); color: var(--ink); border: 1px solid var(--line); }
.btn-danger { background: #c0392b; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 11px 13px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s var(--ease);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--purple); }
.form-group textarea { min-height: 100px; }

.badge { display: inline-block; padding: 4px 11px; border-radius: 999px; font-size: 11px; font-weight: 700; }
.badge-paid { background: #e4f5e9; color: #1e7b3c; }
.badge-pending { background: #eef0ff; color: #4f42e0; }
.badge-failed { background: #fbe4e1; color: #b23a2e; }

.login-shell {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: #111114;
    position: relative;
    overflow: hidden;
}
.login-shell .blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.5;
}
.login-box {
    background: var(--surface);
    border-radius: 22px;
    padding: 44px 40px;
    width: 360px;
    position: relative;
    z-index: 2;
    box-shadow: 0 30px 80px rgba(0,0,0,0.4);
}
.login-box .logo { font-size: 34px; font-weight: 900; letter-spacing: -0.05em; text-align: center; margin-bottom: 6px; }
.login-box .logo em { font-style: normal; color: var(--purple); }
.login-box h1 { font-size: 14px; font-weight: 600; text-align: center; margin-bottom: 28px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.error-msg { background: #fbe4e1; color: #b23a2e; padding: 11px 14px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 16px; }