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

:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-alt: #f0f1f4;
  --border: #dcdfe4;
  --border-light: #e8eaef;
  --text: #1b1e24;
  --text-2: #4a4f5a;
  --text-3: #7a7f8a;
  --accent: #1a6b50;
  --accent-light: #e8f5ef;
  --accent-border: #b8dcc9;
  --red: #b91c1c;
  --red-bg: #fef2f2;
  --green: #166534;
  --green-bg: #f0fdf4;
  --radius: 4px;
  --font: 'IBM Plex Sans', -apple-system, sans-serif;
  --mono: 'IBM Plex Mono', 'SF Mono', monospace;
  --max-w: 960px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 16px;
}

/* ===== NAV ===== */
.nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 14px;
  color: var(--text);
  letter-spacing: 0.01em;
}
.nav-logo:hover { text-decoration: none; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  font-size: 13px;
  color: var(--text-2);
  font-weight: 500;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }

.nav-links .btn-nav {
  background: var(--accent);
  color: #fff;
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 600;
}
.nav-links .btn-nav:hover { opacity: 0.9; color: #fff; }

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--text-2);
}

/* ===== PAGE HEADER ===== */
.page-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}

.page-header h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}

.page-header p {
  font-size: 14px;
  color: var(--text-2);
  max-width: 540px;
}

/* ===== CONTENT ===== */
.content {
  padding: 24px 0;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.panel-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.panel-body {
  padding: 20px;
}

/* ===== TABLE ===== */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th {
  text-align: left;
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-3);
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-light);
  vertical-align: top;
}

.data-table tr:last-child td { border-bottom: none; }

.data-table .mono {
  font-family: var(--mono);
  font-size: 12px;
}

.data-table .method {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
}

/* ===== SERVICES LIST ===== */
.service-table td:first-child {
  font-weight: 600;
  white-space: nowrap;
  width: 180px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  border: none;
  transition: opacity 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { opacity: 0.9; color: #fff; text-decoration: none; }

.btn-ghost {
  background: var(--surface);
  color: var(--text-2);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--text-3); text-decoration: none; }

.btn-sm {
  padding: 5px 12px;
  font-size: 12px;
}

.btn-danger {
  background: none;
  color: var(--red);
  border: 1px solid #fecaca;
  padding: 4px 10px;
  border-radius: var(--radius);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}
.btn-danger:hover { background: var(--red-bg); }

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

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 4px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 13px;
  background: var(--surface);
  color: var(--text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.form-group textarea { resize: vertical; min-height: 64px; }

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-2);
  cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: var(--accent);
}

/* ===== VERIFY ===== */
.verify-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 16px;
  align-items: start;
}

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

.verify-form-row label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-3);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.verify-form-row input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  text-transform: uppercase;
}
.verify-form-row input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.verify-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.verify-btn {
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  border: none;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.verify-btn-primary { background: var(--accent); color: #fff; }
.verify-btn-primary:hover { opacity: 0.9; }

.verify-btn-secondary {
  background: var(--surface-alt);
  color: var(--text-3);
  border: 1px solid var(--border);
  opacity: 0.5;
  pointer-events: none;
  text-decoration: none;
}
.verify-btn-secondary.active {
  opacity: 1;
  pointer-events: auto;
  color: var(--text-2);
}
.verify-btn-secondary.active:hover { border-color: var(--text-3); text-decoration: none; }

.result-card {
  display: none;
  margin-top: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.result-card.visible { display: block; }

.result-card-header {
  background: var(--green-bg);
  border-bottom: 1px solid var(--accent-border);
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--green);
}
.result-card-header .rnum {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
}

.result-row {
  display: flex;
  justify-content: space-between;
  padding: 9px 16px;
  border-bottom: 1px solid var(--border-light);
  font-size: 13px;
}
.result-row:last-of-type { border-bottom: none; }
.result-label { color: var(--text-3); }
.result-value { font-family: var(--mono); font-size: 13px; font-weight: 500; text-align: right; }

.result-footer {
  padding: 10px 16px;
  border-top: 1px solid var(--border-light);
  font-size: 11px;
  color: var(--text-3);
}

.error-card {
  display: none;
  margin-top: 16px;
  background: var(--red-bg);
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}
.error-card.visible { display: block; }
.error-card h3 { font-size: 14px; color: var(--red); margin-bottom: 4px; }
.error-card p { font-size: 12px; color: var(--text-2); }

.help-sidebar { display: flex; flex-direction: column; gap: 12px; }
.help-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}
.help-box h3 { font-size: 12px; font-weight: 600; margin-bottom: 4px; }
.help-box p, .help-box li { font-size: 12px; color: var(--text-3); line-height: 1.5; }
.help-box ol { padding-left: 16px; margin-top: 6px; }
.help-box code {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--surface-alt);
  padding: 1px 4px;
  border-radius: 2px;
}

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  margin-top: 8px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-3);
}

.footer-links {
  display: flex;
  gap: 16px;
  list-style: none;
}

.footer-links a {
  font-size: 12px;
  color: var(--text-3);
}
.footer-links a:hover { color: var(--text-2); }

/* ===== ADMIN ===== */
.admin-page { padding: 24px 0; min-height: calc(100vh - 52px); }
.admin-login { max-width: 320px; margin: 80px auto 0; text-align: center; }
.admin-login h1 { font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.admin-panel { display: none; }
.admin-panel.active { display: block; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.admin-header h1 { font-size: 18px; font-weight: 700; }

.upload-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
}
.upload-panel-header {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
}
.upload-panel-body { padding: 16px 20px; }

/* ===== SPINNER ===== */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
    gap: 8px;
    z-index: 100;
  }
  .form-row { grid-template-columns: 1fr; }
  .verify-layout { grid-template-columns: 1fr; }
  .verify-form-row { grid-template-columns: 1fr; }
  .verify-buttons { grid-template-columns: 1fr; }
  .service-table td:first-child { width: auto; }
}