@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

:root {
  --bg:        #0D1117;
  --bg-2:      #161B22;
  --bg-3:      #1C2128;
  --bg-card:   #21262D;
  --border:    #30363D;
  --border-l:  #3D444D;
  --accent:        #6555bd;
  --accent-bright: #8b7ecc;
  --accent-dark:   #4e3fa0;
  --accent-dim:    #1a1640;
  --accent-border: rgba(101,85,189,0.35);
  --text:   #E6EDF3;
  --text-2: #8B949E;
  --text-3: #6E7681;
  --white:  #FFFFFF;
  --amber:  #D29922;
  --green:  #3FB950;
  --red:    #F85149;
  --red-dim: rgba(248,81,73,0.1);
  --green-dim: rgba(63,185,80,0.1);
  --font-sans: 'Inter', -apple-system, sans-serif;
  --font-mono: 'Space Mono', monospace;
  --radius: 8px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); font-size: 14px; color: var(--text); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; min-height: 100vh; }
a { color: inherit; text-decoration: none; }
input, select, textarea, button { font-family: inherit; font-size: 14px; }

/* Layout */
.admin-wrap { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
}

.sidebar-logo {
  padding: 20px 16px 16px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo img { height: 24px; width: auto; }

.sidebar-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 16px 16px 6px;
}

.sidebar-nav { flex: 1; padding: 4px 8px; overflow-y: auto; }

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-2);
  padding: 7px 8px;
  border-radius: 6px;
  margin-bottom: 1px;
  transition: background 0.12s, color 0.12s;
  cursor: pointer;
}

.sidebar-link:hover { background: var(--bg-3); color: var(--text); }
.sidebar-link.active { background: var(--accent-dim); color: var(--accent-bright); }
.sidebar-link .icon { font-size: 14px; width: 18px; text-align: center; flex-shrink: 0; }

.sidebar-footer {
  padding: 12px 8px;
  border-top: 1px solid var(--border);
}

.sidebar-footer a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-3);
  padding: 7px 8px;
  border-radius: 6px;
  transition: background 0.12s, color 0.12s;
}

.sidebar-footer a:hover { background: var(--bg-3); color: var(--red); }

/* Main content */
.admin-main {
  margin-left: 220px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.admin-topbar {
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}

.admin-topbar h1 { font-size: 16px; font-weight: 600; color: var(--white); }

.topbar-meta { font-size: 12px; color: var(--text-3); font-family: var(--font-mono); }

.admin-content { padding: 28px; flex: 1; max-width: 960px; }

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
}

.card-head {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.card-subtitle {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 2px;
}

.card-body { padding: 18px; }

/* Form elements */
.form-group { margin-bottom: 14px; }
.form-group:last-child { margin-bottom: 0; }

label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 5px;
}

input[type="text"],
input[type="password"],
input[type="url"],
input[type="email"],
input[type="number"],
input[type="datetime-local"],
select,
textarea {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 8px 12px;
  transition: border-color 0.15s;
  outline: none;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--accent-bright);
}

textarea { resize: vertical; min-height: 80px; }

select option { background: var(--bg-2); }

.form-hint { font-size: 11px; color: var(--text-3); margin-top: 4px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

/* Buttons */
.btn {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent-border); }
.btn-primary:hover { background: var(--accent-dark); }
.btn-outline { background: transparent; color: var(--text-2); border-color: var(--border-l); }
.btn-outline:hover { border-color: var(--accent-bright); color: var(--accent-bright); }
.btn-danger { background: var(--red-dim); color: var(--red); border-color: rgba(248,81,73,0.3); }
.btn-danger:hover { background: var(--red); color: #fff; }
.btn-success { background: var(--green-dim); color: var(--green); border-color: rgba(63,185,80,0.3); }
.btn-success:hover { background: var(--green); color: #111; }
.btn-sm { padding: 5px 12px; font-size: 10px; }

.btn-group { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* Alerts */
.alert {
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.alert-success { background: var(--green-dim); border: 1px solid rgba(63,185,80,0.3); color: var(--green); }
.alert-error { background: var(--red-dim); border: 1px solid rgba(248,81,73,0.3); color: var(--red); }
.alert-warning { background: rgba(210,153,34,0.1); border: 1px solid rgba(210,153,34,0.3); color: var(--amber); }
.alert-info { background: var(--accent-dim); border: 1px solid var(--accent-border); color: var(--accent-bright); }

/* Toggle switch */
.toggle-wrap { display: flex; align-items: center; gap: 10px; }

.toggle {
  position: relative;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
}

.toggle input { opacity: 0; width: 0; height: 0; }

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-3);
  border: 1px solid var(--border-l);
  border-radius: 22px;
  cursor: pointer;
  transition: background 0.2s;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  height: 16px;
  width: 16px;
  left: 2px;
  bottom: 2px;
  background: var(--text-3);
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}

.toggle input:checked + .toggle-slider { background: var(--accent); border-color: var(--accent-border); }
.toggle input:checked + .toggle-slider::before { transform: translateX(18px); background: #fff; }

.toggle-label { font-size: 13px; color: var(--text-2); }

/* Status badge */
.badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.badge-green { background: var(--green-dim); color: var(--green); border: 1px solid rgba(63,185,80,0.3); }
.badge-red { background: var(--red-dim); color: var(--red); border: 1px solid rgba(248,81,73,0.3); }
.badge-amber { background: rgba(210,153,34,0.1); color: var(--amber); border: 1px solid rgba(210,153,34,0.3); }
.badge-accent { background: var(--accent-dim); color: var(--accent-bright); border: 1px solid var(--accent-border); }

/* Table */
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th { text-align: left; font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-3); padding: 8px 12px; border-bottom: 1px solid var(--border); }
.admin-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 13px; color: var(--text-2); vertical-align: middle; }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--bg-3); }

/* Section header */
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.section-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
}

.section-sub { font-size: 12px; color: var(--text-3); margin-top: 2px; }

/* Tier/item list */
.item-list { display: flex; flex-direction: column; gap: 8px; }

.item-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.item-card:hover { border-color: var(--border-l); }
.item-info { flex: 1; min-width: 0; }
.item-name { font-size: 13px; font-weight: 500; color: var(--text); margin-bottom: 2px; }
.item-meta { font-size: 11px; color: var(--text-3); font-family: var(--font-mono); }
.item-actions { display: flex; gap: 6px; flex-shrink: 0; }

/* Login page */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--bg);
}

.login-box {
  width: 100%;
  max-width: 380px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px;
}

.login-logo { margin-bottom: 24px; }
.login-logo img { height: 28px; }
.login-title { font-size: 18px; font-weight: 600; color: var(--white); margin-bottom: 6px; }
.login-sub { font-size: 13px; color: var(--text-3); margin-bottom: 24px; }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-head {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title { font-size: 15px; font-weight: 600; color: var(--white); }
.modal-close { background: none; border: none; color: var(--text-3); cursor: pointer; font-size: 20px; line-height: 1; padding: 0; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 20px; }
.modal-foot { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }

/* Separator */
.sep { height: 1px; background: var(--border); margin: 20px 0; }

/* Stat cards */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px,1fr)); gap: 12px; margin-bottom: 20px; }
.stat-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.stat-label { font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-3); margin-bottom: 6px; }
.stat-val { font-family: var(--font-mono); font-size: 22px; font-weight: 700; color: var(--accent-bright); }
.stat-sub { font-size: 11px; color: var(--text-3); margin-top: 3px; }