/* ── Variables ────────────────────────────────────────────────────────────── */
:root {
  --bg:      #080c08;
  --bg2:     #0a0f0a;
  --bg3:     #0f160f;
  --card:    #141e14;
  --card2:   #1a261a;
  --green:   #22c55e;
  --gdim:    rgba(34,197,94,.12);
  --gborder: rgba(34,197,94,.2);
  --gold:    #c9a84c;
  --goldbri: #e4c06a;
  --golddim: rgba(201,168,76,.12);
  --goldb:   rgba(201,168,76,.22);
  --goldbhi: rgba(201,168,76,.5);
  --text:    #f0ece0;
  --text2:   #a89f88;
  --text3:   #5a5448;
  --mono:    'JetBrains Mono', monospace;
  --sans:    'Bricolage Grotesque', sans-serif;
  --red:     #ef4444;
  --sidebar: 260px;
}

/* ── Reset ────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--green); text-decoration: none; }
a:hover { color: var(--goldbri); }
input, textarea, select, button {
  font-family: var(--sans);
  font-size: 1rem;
}

/* ── Layout app ───────────────────────────────────────────────────────────── */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ──────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar);
  background: var(--bg2);
  border-right: 1px solid var(--goldb);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  z-index: 100;
  scrollbar-width: thin;
  scrollbar-color: var(--card2) transparent;
}

.sidebar-logo {
  padding: 1.5rem 1.25rem;
  border-bottom: 1px solid var(--goldb);
  display: flex;
  align-items: center;
  gap: .75rem;
}
.sidebar-logo .logo-icon {
  font-family: var(--mono);
  font-size: 1.3rem;
  color: #fff;
  display: flex;
  align-items: center;
  gap: .1em;
}
.sidebar-logo .logo-dot {
  width: 7px; height: 7px;
  background: var(--gold);
  border-radius: 50%;
}
.sidebar-logo .logo-text {
  display: flex; flex-direction: column;
}
.sidebar-logo .logo-text span:first-child {
  font-size: .7rem; font-weight: 600;
  letter-spacing: .2em; text-transform: uppercase; color: var(--text);
}
.sidebar-logo .logo-text span:last-child {
  font-size: .7rem; font-weight: 400;
  letter-spacing: .2em; text-transform: uppercase; color: var(--gold);
}

.sidebar-nav { flex: 1; padding: 1rem 0; }

.sidebar-section {
  padding: .4rem 1rem .2rem;
  font-family: var(--mono);
  font-size: .6rem;
  color: var(--text3);
  letter-spacing: .15em;
  text-transform: uppercase;
  margin-top: .75rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .6rem 1.25rem;
  color: var(--text2);
  font-size: .88rem;
  transition: background .2s, color .2s;
  border-left: 2px solid transparent;
}
.sidebar-link:hover {
  background: var(--card);
  color: var(--text);
}
.sidebar-link.active {
  background: var(--golddim);
  color: var(--gold);
  border-left-color: var(--gold);
}
.sidebar-link .icon { font-size: 1rem; flex-shrink: 0; }

/* Módulos dentro del sidebar */
.sidebar-module { }
.sidebar-module-title {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem 1.25rem .4rem;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text3);
  cursor: pointer;
}
.sidebar-lesson-link {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .35rem 1.25rem .35rem 2.5rem;
  font-size: .82rem;
  color: var(--text3);
  transition: color .2s, background .2s;
}
.sidebar-lesson-link:hover { color: var(--text2); background: var(--card); }
.sidebar-lesson-link.active { color: var(--green); }
.sidebar-lesson-link.completed { color: var(--text2); }
.lesson-check { color: var(--green); font-size: .75rem; flex-shrink: 0; }

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--goldb);
  font-size: .82rem;
  color: var(--text3);
}
.sidebar-footer a { color: var(--text3); }
.sidebar-footer a:hover { color: var(--gold); }

/* ── Contenido principal ──────────────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  height: 56px;
  background: var(--bg2);
  border-bottom: 1px solid var(--goldb);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
}
.topbar-user {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: .82rem;
  color: var(--text3);
}

.page-body { padding: 2rem; max-width: 960px; }

/* ── Componentes ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .65rem 1.4rem;
  border-radius: 3px;
  font-weight: 600;
  font-size: .9rem;
  cursor: pointer;
  border: none;
  transition: opacity .2s, transform .15s;
  text-decoration: none;
}
.btn:hover { opacity: .88; transform: translateY(-1px); }
.btn-gold   { background: var(--gold); color: var(--bg); }
.btn-green  { background: var(--green); color: var(--bg); }
.btn-ghost  { background: transparent; color: var(--text2); border: 1px solid var(--goldb); }
.btn-ghost:hover { border-color: var(--goldbhi); color: var(--text); }
.btn-danger { background: transparent; color: var(--red); border: 1px solid rgba(239,68,68,.3); }
.btn-sm     { padding: .4rem .9rem; font-size: .82rem; }

.card {
  background: var(--card);
  border: 1px solid var(--goldb);
  border-radius: 4px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block;
  font-size: .82rem;
  color: var(--text2);
  margin-bottom: .4rem;
  font-family: var(--mono);
  letter-spacing: .05em;
}
.form-input {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--goldb);
  border-radius: 3px;
  padding: .75rem 1rem;
  color: var(--text);
  font-size: .95rem;
  transition: border-color .2s;
  outline: none;
}
.form-input:focus { border-color: var(--goldbhi); }
.form-input::placeholder { color: var(--text3); }
textarea.form-input { min-height: 120px; resize: vertical; }
select.form-input { cursor: pointer; }
.form-check {
  display: flex;
  align-items: center;
  gap: .5rem;
  cursor: pointer;
  font-size: .9rem;
  color: var(--text2);
}
.form-check input { width: 16px; height: 16px; accent-color: var(--gold); }

.alert {
  padding: .9rem 1.25rem;
  border-radius: 3px;
  font-size: .9rem;
  margin-bottom: 1rem;
  border-left: 3px solid;
}
.alert-error   { background: rgba(239,68,68,.08); border-color: var(--red); color: #fca5a5; }
.alert-success { background: var(--gdim); border-color: var(--green); color: #86efac; }
.alert-info    { background: var(--golddim); border-color: var(--gold); color: var(--goldbri); }

.badge {
  display: inline-flex;
  align-items: center;
  padding: .15rem .5rem;
  border-radius: 2px;
  font-size: .72rem;
  font-family: var(--mono);
  letter-spacing: .05em;
}
.badge-green  { background: var(--gdim); color: var(--green); }
.badge-gold   { background: var(--golddim); color: var(--gold); }
.badge-muted  { background: var(--card2); color: var(--text3); }
.badge-red    { background: rgba(239,68,68,.1); color: var(--red); }

/* ── Progress bar ─────────────────────────────────────────────────────────── */
.progress-bar-wrap {
  height: 6px;
  background: var(--card2);
  border-radius: 3px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--goldbri));
  border-radius: 3px;
  transition: width .5s ease;
}

/* ── Auth pages ───────────────────────────────────────────────────────────── */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
  background: var(--bg);
}
.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--card);
  border: 1px solid var(--goldb);
  border-radius: 6px;
  padding: 2.5rem 2rem;
}
.auth-logo {
  text-align: center;
  margin-bottom: 2rem;
}
.auth-logo .logo-icon {
  font-family: var(--mono);
  font-size: 2rem;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: .1em;
}
.auth-logo .logo-dot {
  width: 9px; height: 9px;
  background: var(--gold);
  border-radius: 50%;
}
.auth-logo p {
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: .5rem;
}

/* ── Video player ─────────────────────────────────────────────────────────── */
.video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  background: #000;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--goldb);
}
.video-wrap iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
}

/* ── Tabla admin ──────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: .88rem;
}
th {
  text-align: left;
  padding: .75rem 1rem;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text3);
  border-bottom: 1px solid var(--goldb);
}
td {
  padding: .85rem 1rem;
  border-bottom: 1px solid rgba(201,168,76,.07);
  color: var(--text2);
  vertical-align: middle;
}
tr:hover td { background: var(--golddim); }

/* ── Checkout ─────────────────────────────────────────────────────────────── */
.checkout-wrap {
  max-width: 540px;
  margin: 0 auto;
  padding: 3rem 1.25rem;
}

/* ── Hamburger button ─────────────────────────────────────────────────────── */
.sidebar-toggle {
  display: none;
  position: fixed;
  top: 9px;
  left: 12px;
  z-index: 300;
  width: 38px; height: 38px;
  background: var(--bg2);
  border: 1px solid var(--goldb);
  border-radius: 4px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
  transition: background .2s;
}
.sidebar-toggle:hover { background: var(--card); }
.sidebar-toggle span {
  display: block;
  width: 17px; height: 2px;
  background: var(--text2);
  border-radius: 1px;
  transition: transform .25s, opacity .2s;
}
.sidebar-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.sidebar-toggle.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.sidebar-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Backdrop mobile ──────────────────────────────────────────────────────── */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.65);
  z-index: 199;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}
.sidebar-backdrop.is-open { display: block; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --sidebar: 0px; }

  .sidebar-toggle { display: flex; }

  .sidebar {
    transform: translateX(-100%);
    transition: transform .28s cubic-bezier(.4, 0, .2, 1);
    width: 280px;
    z-index: 200;
  }
  .sidebar.is-open {
    transform: translateX(0);
    box-shadow: 6px 0 32px rgba(0,0,0,.55);
  }

  .main-content { margin-left: 0; }

  .topbar {
    padding: 0 1rem 0 3.5rem; /* espacio para el botón hamburguesa */
  }

  .page-body { padding: 1.25rem; }

  /* Tablas: scroll horizontal en mobile */
  .table-wrap { -webkit-overflow-scrolling: touch; }
}