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

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --border: #1a1a1a;
  --border-light: #d4d4d4;
  --accent: #000000;
  --text: #0a0a0a;
  --muted: #6b6b6b;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  min-height: 100vh;
  padding: 48px 24px;
  overflow-x: hidden;
  max-width: 100vw;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--text);
  color: #ffffff;
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 0.8rem;
  z-index: 100;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

a, button, input, [tabindex] {
  outline: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

header {
  max-width: 1180px;
  margin: 0 auto 40px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 20px;
}

header h1 {
  font-family: var(--mono);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.3px;
  text-transform: uppercase;
}

header p {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 6px;
  font-family: var(--mono);
}

.layout {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 24px;
  align-items: start;
}

.form-panel,
.table-panel {
  min-width: 0;
}

/* FORM PANEL */
.form-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 24px;
  position: sticky;
  top: 20px;
}

.form-panel h2 {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 10px;
}

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

label {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  font-family: var(--mono);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

input {
  width: 100%;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 0;
  padding: 12px 10px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 1rem;
  min-height: 44px;
  transition: border-color 0.15s;
}

input::placeholder {
  font-size: 0.85rem;
  color: var(--muted);
  opacity: 1;
}

input:focus {
  border-color: var(--border);
}

.btn-row {
  display: flex;
  gap: 8px;
  margin-top: 18px;
}

button {
  flex: 1;
  padding: 12px 14px;
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  cursor: pointer;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: background-color 0.15s, color 0.15s;
  background: #ffffff;
  color: var(--text);
}

button:hover { background: var(--text); color: #ffffff; }
button:active { opacity: 0.8; }
button:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: var(--text);
  color: #ffffff;
}

.btn-primary:hover { background: #ffffff; color: var(--text); }

.btn-secondary {
  background: #ffffff;
  color: var(--text);
}

.btn-danger {
  background: #ffffff;
  color: var(--text);
  flex: none;
  padding: 10px 12px;
}

/* MODE BADGE */
#mode-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 0;
  margin-bottom: 16px;
  background: #ffffff;
  color: var(--text);
  border: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

#mode-badge.edit-mode {
  background: var(--text);
  color: #ffffff;
  border-color: var(--text);
}

/* FEEDBACK */
#feedback {
  font-family: var(--mono);
  font-size: 0.76rem;
  margin-top: 12px;
  padding: 9px 10px;
  border-radius: 0;
  display: none;
  border-left: 3px solid var(--border);
}

#feedback.success {
  background: #ffffff;
  color: var(--text);
  border: 1px solid var(--border-light);
  border-left: 3px solid var(--text);
  display: block;
}

#feedback.error {
  background: #ffffff;
  color: var(--text);
  border: 1px solid var(--border);
  border-left: 3px solid var(--text);
  display: block;
  font-weight: 600;
}

/* USERS TABLE */
.table-panel h2 {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.table-wrapper {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-light);
}

.table-wrapper:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  table-layout: fixed;
}

th:nth-child(1) { width: 70px; }
th:nth-child(2) { width: 22%; }
th:nth-child(3) { width: 32%; }
th:nth-child(4) { width: 18%; }
th:nth-child(5) { width: 160px; }

th {
  text-align: left;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 10px 12px;
  border-bottom: 2px solid var(--border);
}

td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
  overflow-wrap: break-word;
}

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

tr:hover td { background: #f5f5f5; }

.id-cell {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
}

.email-cell {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text);
  word-break: break-all;
}

.date-cell {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.btn-edit {
  background: #ffffff;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 7px 10px;
  min-height: 36px;
  font-size: 0.7rem;
  flex: none;
}

.btn-edit:hover { background: var(--text); color: #ffffff; }

.btn-del {
  background: #ffffff;
  color: var(--text);
  border: 1px solid var(--border-light);
  padding: 7px 10px;
  min-height: 36px;
  font-size: 0.7rem;
  flex: none;
}

.btn-del:hover { background: var(--text); color: #ffffff; border-color: var(--text); }

.empty-state {
  text-align: center;
  padding: 48px 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.85rem;
}

.count-badge {
  font-family: var(--mono);
  font-size: 0.7rem;
  background: #ffffff;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 0;
  margin-left: 8px;
}

/* SQL LOG */
.sql-log {
  max-width: 1180px;
  margin: 28px auto 0;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 16px 20px;
}

.sql-log h3 {
  font-family: var(--mono);
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 8px;
}

#sql-display {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text);
  white-space: pre-wrap;
  line-height: 1.6;
  overflow-x: auto;
}

#sql-display .keyword { color: #000000; font-weight: 600; }
#sql-display .value { color: var(--muted); }

@media (max-width: 820px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .form-panel {
    position: static;
  }

  table {
    table-layout: auto;
    min-width: 620px;
  }

  th:nth-child(1),
  th:nth-child(2),
  th:nth-child(3),
  th:nth-child(4),
  th:nth-child(5) {
    width: auto;
    white-space: nowrap;
  }
}

@media (max-width: 480px) {
  body {
    padding: 24px 14px;
  }

  header h1 {
    font-size: 1.1rem;
  }

  .form-panel,
  .sql-log {
    padding: 16px;
  }

  .btn-row {
    flex-direction: column;
  }

  th, td {
    padding: 9px 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
  }
}