:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --success: #16a34a;
  --danger: #dc2626;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar h1 {
  font-size: 18px;
  margin: 0;
}

.badge {
  font-size: 12px;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.03);
}

h2 { margin-top: 0; font-size: 18px; }

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 12px 0 4px;
  color: var(--muted);
}

input[type=text], input[type=tel], input[type=file] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}

button, .btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  margin-top: 16px;
}
button:hover, .btn:hover { background: var(--primary-dark); }

.btn-wa {
  background: #25D366;
}
.btn-wa:hover { background: #1ebe57; }

.btn-secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: #f3f4f6; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}
th { color: var(--muted); font-weight: 600; }

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}
.tag-ok { background: #dcfce7; color: var(--success); }
.tag-expired { background: #fee2e2; color: var(--danger); }

.link-box {
  display: flex;
  gap: 8px;
  align-items: center;
  background: #f3f4f6;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  word-break: break-all;
}

.viewer-wrap {
  text-align: center;
}
.viewer-wrap img {
  max-width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #000;
}

.small { font-size: 12px; color: var(--muted); }
.center { text-align: center; }

select, input[type=password] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 400;
  color: var(--text);
  margin-top: 14px;
}
.checkbox-label input[type=checkbox] {
  width: auto;
}

.error-box {
  background: #fee2e2;
  color: var(--danger);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  margin: 12px 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--primary);
}
.btn-nav {
  margin: 0;
  padding: 6px 12px;
  font-size: 12px;
}

.inline-rename {
  display: flex;
  gap: 8px;
  align-items: center;
}
.inline-rename input {
  flex: 1;
}
.inline-rename button {
  margin: 0;
  white-space: nowrap;
}

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.login-card {
  width: 100%;
  max-width: 360px;
}
.login-title {
  text-align: center;
  color: var(--primary);
  margin: 0 0 4px;
}