/* ── Variables SIFRINA ───────────────────────────── */
:root {
  --purple-dark:  #1a0a1e;
  --purple-main:  #7a3fa0;
  --purple-light: #c77dff;
  --purple-bg:    #f5eef9;
  --purple-border:#e0c6f0;
  --text-dark:    #1a0a1e;
  --text-muted:   #9b72b0;
  --white:        #ffffff;
  --success:      #2e9e5b;
  --error:        #c0392b;
  --radius:       12px;
  --radius-sm:    8px;
  --shadow:       0 8px 32px rgba(106,47,160,0.14);
}

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

.auth-body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, #1a0a1e 0%, #4a1870 50%, #2d0a40 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

/* ── Contenedor ──────────────────────────────────── */
.auth-container {
  background: var(--white);
  border-radius: 20px;
  padding: 36px 32px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}

/* ── Logo ────────────────────────────────────────── */
.auth-logo {
  text-align: center;
  margin-bottom: 24px;
}
.auth-logo a {
  font-size: 28px;
  font-weight: 600;
  color: var(--purple-dark);
  text-decoration: none;
  letter-spacing: 0.14em;
}
.auth-logo a span { color: var(--purple-light); }

/* ── Tabs ────────────────────────────────────────── */
.auth-tabs {
  display: flex;
  background: var(--purple-bg);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 24px;
}
.tab-btn {
  flex: 1;
  padding: 10px;
  border: none;
  background: transparent;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all .2s;
}
.tab-btn.active {
  background: var(--white);
  color: var(--purple-main);
  box-shadow: 0 2px 6px rgba(106,47,160,0.12);
}

/* ── Formularios ─────────────────────────────────── */
.auth-form { display: none; }
.auth-form.active { display: block; }

.form-row { display: flex; gap: 12px; }
.form-row .form-group { flex: 1; }

.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 6px;
}
.form-group input {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--purple-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-dark);
  background: #faf7fd;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
.form-group input:focus {
  border-color: var(--purple-main);
  box-shadow: 0 0 0 3px rgba(122,63,160,0.12);
}
.pass-wrap { position: relative; }
.pass-wrap input { padding-right: 42px; }
.toggle-pass {
  position: absolute;
  right: 12px; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  cursor: pointer; font-size: 16px;
}
.pass-strength {
  font-size: 11px;
  font-weight: 500;
  margin-top: 4px;
  min-height: 16px;
}

/* ── Botones ─────────────────────────────────────── */
.btn-primary {
  background: linear-gradient(135deg, var(--purple-main), var(--purple-light));
  color: var(--white);
  border: none;
  border-radius: 20px;
  padding: 13px 24px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s, transform .1s;
  letter-spacing: 0.02em;
}
.btn-primary:hover  { opacity: .92; }
.btn-primary:active { transform: scale(.98); }
.btn-primary:disabled { opacity: .6; cursor: not-allowed; }
.btn-full { width: 100%; }

.btn-social {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px;
  border: 1.5px solid var(--purple-border);
  border-radius: 20px;
  background: var(--white);
  color: var(--text-dark);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background .2s;
}
.btn-social:hover { background: var(--purple-bg); }

/* ── Extras ──────────────────────────────────────── */
.auth-divider {
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  margin: 16px 0;
  position: relative;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  position: absolute;
  top: 50%; width: 38%;
  height: 1px;
  background: var(--purple-border);
}
.auth-divider::before { left: 0; }
.auth-divider::after  { right: 0; }

.forgot-link {
  display: block;
  text-align: right;
  font-size: 12px;
  color: var(--purple-main);
  text-decoration: none;
  margin: -8px 0 16px;
}
.forgot-link:hover { text-decoration: underline; }

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 12px;
  color: var(--text-muted);
}
.form-check input { width: auto; margin-top: 2px; accent-color: var(--purple-main); }
.form-check a { color: var(--purple-main); }

/* ── Alertas ─────────────────────────────────────── */
.alert {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
}
.alert-error   { background: #fdf0ef; color: var(--error); border: 1px solid #f5c6c4; }
.alert-success { background: #f0faf5; color: var(--success); border: 1px solid #c4e8d4; }