* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; min-height: 100vh; background: #0f1115; color: #e8e8ea;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
a { color: #58a6ff; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.topbar { background: #07090d; border-bottom: 1px solid #1d2027; padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between; }
.topbar h1 { margin: 0; font-size: 18px; font-weight: 600; }
.topbar nav { display: flex; gap: 6px; }
.topbar nav button { background: transparent; border: 1px solid transparent; color: #aaa;
  padding: 6px 12px; border-radius: 6px; cursor: pointer; font-size: 14px; }
.topbar nav button:hover { color: #fff; background: #14181f; }
.topbar nav button.active { color: #fff; background: #1d2230; border-color: #2d3340; }
.topbar .right { display: flex; gap: 12px; align-items: center; font-size: 13px; color: #aaa; }

.container { max-width: 1100px; margin: 24px auto; padding: 0 20px 60px; }

h2 { margin: 0 0 16px; font-size: 22px; }
.section { background: #14181f; border: 1px solid #232832; border-radius: 10px;
  padding: 20px; margin-bottom: 20px; }

/* Forms */
.form-row { display: flex; gap: 10px; flex-wrap: wrap; }
.form-row .field { flex: 1; min-width: 200px; }
.field label { display: block; font-size: 12px; color: #aaa; margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.04em; }
.field input, .field select, .field textarea {
  width: 100%; padding: 10px 12px; background: #0f1115; border: 1px solid #2a3040;
  border-radius: 6px; color: #fff; font-size: 14px; font-family: inherit; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: #58a6ff; }

.btn { padding: 9px 16px; background: #1f6feb; color: #fff; border: 0; border-radius: 6px;
  font-size: 14px; font-weight: 500; cursor: pointer; transition: background 0.15s; }
.btn:hover { background: #2879fd; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.secondary { background: #2d3340; }
.btn.secondary:hover { background: #3a4150; }
.btn.danger { background: #d73a49; }
.btn.danger:hover { background: #e0455a; }
.btn.success { background: #1f883d; }
.btn.success:hover { background: #29994a; }
.btn.small { padding: 6px 10px; font-size: 12px; }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; padding: 10px 12px; color: #8a8f99; font-weight: 500;
  border-bottom: 1px solid #232832; text-transform: uppercase; font-size: 11px; letter-spacing: 0.05em; }
td { padding: 12px; border-bottom: 1px solid #1d2027; vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
tr:hover td { background: #181c25; }

.muted { color: #6e7681; }
.error { color: #ff7b72; font-size: 14px; margin: 8px 0; }
.success-msg { color: #56d364; font-size: 14px; margin: 8px 0; }

/* Login */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.login-card { width: 100%; max-width: 380px; background: #14181f; padding: 32px;
  border-radius: 12px; border: 1px solid #232832; }
.login-card h1 { margin: 0 0 4px; font-size: 26px; }
.login-card .sub { margin: 0 0 22px; color: #8a8f99; font-size: 13px; }

/* Link row */
.link-row { display: flex; align-items: center; gap: 6px; font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12px; }
.link-row .url { flex: 1; padding: 6px 10px; background: #0a0c10; border: 1px solid #232832;
  border-radius: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #aaa; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 500; }
.badge.used { background: #1f883d33; color: #56d364; }
.badge.unused { background: #6e768133; color: #8a8f99; }
.badge.revoked { background: #d73a4933; color: #ff7b72; }

/* Modal */
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,0.7); display: flex;
  align-items: center; justify-content: center; padding: 20px; z-index: 1000; }
.modal { background: #14181f; border-radius: 10px; padding: 24px; max-width: 920px;
  width: 100%; max-height: 88vh; overflow: auto; border: 1px solid #232832; }
.modal h2 { margin-top: 0; }

.empty { padding: 40px 20px; text-align: center; color: #6e7681; }

/* WhatsApp button special green */
.btn.whatsapp { background: #25d366; color: #fff; }
.btn.whatsapp:hover { background: #2bda6d; }