:root {
  --bg: #0f1115;
  --surface: #171a21;
  --surface-2: #1e222b;
  --border: #2a2f3a;
  --text: #e8eaed;
  --text-dim: #9aa1ac;
  --accent: #6c8cff;
  --accent-hover: #5676f0;
  --success: #3ecf8e;
  --error: #ff6b6b;
  --radius: 10px;
}

* { box-sizing: border-box; }

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

.hidden { display: none !important; }

/* --- Auth screen --- */

.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.auth-card h1 {
  margin: 0 0 4px;
  font-size: 22px;
}

.subtitle {
  color: var(--text-dim);
  margin: 0 0 24px;
  font-size: 14px;
}

.tabs {
  display: flex;
  gap: 4px;
  background: var(--surface-2);
  border-radius: 8px;
  padding: 4px;
  margin-bottom: 20px;
}

.tab-btn {
  flex: 1;
  padding: 8px;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 13px;
}

.tab-btn.active {
  background: var(--accent);
  color: white;
}

.tab-panel { display: none; flex-direction: column; gap: 14px; }
.tab-panel.active { display: flex; }

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--text-dim);
}

input, select {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
}

input[type="checkbox"] {
  width: auto;
  padding: 0;
}

.checkbox-label {
  flex-direction: row;
  align-items: center;
  gap: 8px;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

.btn {
  padding: 10px 16px;
  border-radius: 8px;
  border: none;
  font-size: 14px;
  cursor: pointer;
  font-weight: 500;
}

.btn.primary { background: var(--accent); color: white; }
.btn.primary:hover { background: var(--accent-hover); }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.ghost:hover { border-color: var(--accent); }
.btn.danger { background: transparent; border: 1px solid var(--error); color: var(--error); }

.form-error { color: var(--error); font-size: 13px; margin: 4px 0 0; min-height: 16px; }
.form-success { color: var(--success); font-size: 13px; margin: 4px 0 0; min-height: 16px; }

/* --- App shell --- */

.app-screen {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.brand {
  font-weight: 700;
  font-size: 18px;
  padding: 8px 10px 20px;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.nav-btn {
  text-align: left;
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}

.nav-btn:hover { background: var(--surface-2); color: var(--text); }
.nav-btn.active { background: var(--surface-2); color: var(--text); font-weight: 600; }

.logout { margin-top: auto; }

.content {
  flex: 1;
  padding: 32px 40px;
  max-width: 900px;
}

.section { display: none; }
.section.active { display: block; }

h2 { margin: 0 0 20px; font-size: 22px; }
h3 { margin: 0 0 8px; font-size: 15px; }

.hint { color: var(--text-dim); font-size: 13px; margin: -8px 0 16px; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-label { font-size: 12px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.04em; }
.card-value { font-size: 20px; font-weight: 600; }
.card-sub { font-size: 12px; color: var(--text-dim); }

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}

.plan-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: center;
}

.plan-card.current { border-color: var(--accent); }

.plan-card .plan-name { font-weight: 600; font-size: 15px; }
.plan-card .plan-numbers { color: var(--text-dim); font-size: 12px; }
.plan-card .meta { color: var(--text-dim); font-size: 11px; }

.panel-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.form-box {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 420px;
}

.list-box {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14px;
}

.list-item .meta { color: var(--text-dim); font-size: 12px; }
.list-item .left { display: flex; flex-direction: column; gap: 2px; }

.badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text-dim);
}
.badge.active { background: rgba(62, 207, 142, 0.15); color: var(--success); }
.badge.pending { background: rgba(255, 193, 7, 0.15); color: #ffc107; }
.badge.approved { background: rgba(62, 207, 142, 0.15); color: var(--success); }
.badge.rejected { background: rgba(255, 107, 107, 0.15); color: var(--error); }

.inline-form {
  display: flex;
  gap: 8px;
  max-width: 520px;
  flex-wrap: wrap;
}

.inline-form input { flex: 1; min-width: 150px; }

.key-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface-2);
  padding: 10px 14px;
  border-radius: 8px;
}

.key-row code {
  font-size: 13px;
  word-break: break-all;
  color: var(--accent);
}

.empty-state { color: var(--text-dim); font-size: 13px; padding: 12px 0; }

/* --- Link button (recuperar contraseña / volver) --- */

.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 13px;
  cursor: pointer;
  padding: 0;
  text-align: left;
  text-decoration: underline;
}
.link-btn:hover { color: var(--accent-hover); }

/* --- Selector de idioma --- */

.lang-switch {
  display: flex;
  gap: 4px;
}
.lang-switch.top-right {
  position: absolute;
  top: 16px;
  right: 16px;
}
.lang-btn {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
}
.lang-btn.active { background: var(--accent); color: white; border-color: var(--accent); }
.sidebar .lang-switch { margin: 10px 0; }

/* --- Menú móvil --- */

.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 20;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
}

/* --- Responsive --- */

@media (max-width: 720px) {
  .auth-card { padding: 24px 20px; }
  .lang-switch.top-right { top: 10px; right: 10px; }

  .mobile-menu-btn { display: block; }

  .app-screen { flex-direction: column; }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 240px;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    z-index: 15;
    padding-top: 64px;
  }
  .sidebar.open { transform: translateX(0); }

  .content { padding: 72px 16px 32px; max-width: 100%; }

  .cards { grid-template-columns: 1fr; }
  .plans-grid { grid-template-columns: 1fr; }

  .form-box, .inline-form { max-width: 100%; }
  .inline-form { flex-direction: column; }
  .inline-form input { min-width: 0; }

  .list-item { flex-wrap: wrap; gap: 8px; }

  .key-row { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 420px) {
  .auth-card { padding: 20px 16px; }
  .content { padding: 68px 12px 24px; }
}