/* ==========================================================================
   auth.css — صفحه ورود/ثبت‌نام (صفحه مستقل، بدون سایدبار)
   توکن‌های رنگ و تایپوگرافی از base/variables.css خوانده می‌شوند.
   ========================================================================== */

.auth-body {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-sans);
}

.auth-shell {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 480px);
  align-items: center;
  gap: clamp(24px, 6vw, 96px);
  width: min(1180px, 100%);
  margin-inline: auto;
  padding: clamp(20px, 4vw, 48px);
}

/* ------------------------------------------------ برند (سمت راست) */
.auth-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.auth-brand__logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.auth-brand__logo img {
  width: 52px;
  height: 52px;
  filter: drop-shadow(0 8px 20px rgba(79, 124, 255, 0.35));
}

.auth-brand__logo strong {
  font-size: var(--fs-lg);
  font-weight: 800;
}

.auth-brand__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.5;
  margin: 0;
}

.auth-brand__title span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.auth-brand__desc {
  max-width: 46ch;
  font-size: var(--fs-md);
  line-height: 2;
  color: var(--text-muted);
  margin: 0;
}

.auth-brand__features {
  display: grid;
  gap: 12px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.auth-brand__features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-md);
  color: var(--text-muted);
}

.auth-brand__foot {
  margin-top: 14px;
}

.auth-brand__foot a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  padding: 8px 14px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-full);
  transition: border-color var(--dur), background var(--dur), color var(--dur);
}

.auth-brand__foot a:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
  color: var(--text);
}

.auth-brand__foot svg {
  width: 16px;
  height: 16px;
}

/* ------------------------------------------------ کارت فرم (سمت چپ) */
.auth-panel {
  display: grid;
  place-items: center;
}

.auth-card {
  width: min(420px, 100%);
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: clamp(22px, 3vw, 32px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-pop);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
}

.auth-card__head {
  text-align: center;
  display: grid;
  gap: 6px;
}

.auth-card__head img {
  width: 56px;
  height: 56px;
  margin-inline: auto;
  filter: drop-shadow(0 8px 20px rgba(79, 124, 255, 0.35));
}

.auth-card__title {
  font-size: var(--fs-xl);
  font-weight: 800;
  margin: 4px 0 0;
}

.auth-card__subtitle {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin: 0;
}

/* تب‌ها */
.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
}

.auth-tab {
  display: grid;
  place-items: center;
  padding: 9px 12px;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-full);
  transition: color var(--dur), background var(--dur), box-shadow var(--dur);
}

.auth-tab:hover {
  color: var(--text);
}

.auth-tab.is-active {
  color: var(--on-tone);
  background: var(--gradient-primary);
  box-shadow: 0 8px 20px -8px var(--primary);
}

/* خطا */
.auth-error {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  font-size: var(--fs-sm);
  color: var(--c-red);
  background: color-mix(in srgb, var(--c-red) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--c-red) 35%, transparent);
  border-radius: var(--radius-sm);
  animation: auth-shake 0.4s var(--ease);
}

.auth-error svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

@keyframes auth-shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(5px); }
  75% { transform: translateX(-5px); }
}

/* فرم */
.auth-form {
  display: grid;
  gap: 14px;
}

.auth-form .btn[type="submit"] {
  margin-top: 6px;
  height: 44px;
}

.pass-wrap {
  position: relative;
}

.pass-wrap .input {
  padding-inline-end: 44px;
}

.pass-toggle {
  position: absolute;
  inset-inline-end: 8px;
  top: 50%;
  transform: translateY(-50%);
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  color: var(--text-subtle);
  background: transparent;
  border: 0;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: color var(--dur);
}

.pass-toggle:hover {
  color: var(--text);
}

.pass-toggle svg {
  width: 17px;
  height: 17px;
}

/* پانویس کارت */
.auth-foot {
  font-size: var(--fs-xs);
  color: var(--text-subtle);
  text-align: center;
  line-height: 1.9;
  margin: 0;
}

.auth-foot a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.auth-foot a:hover {
  text-decoration: underline;
}

/* ------------------------------------------------ ریسپانسیو */
@media (max-width: 920px) {
  .auth-shell {
    grid-template-columns: 1fr;
    align-content: start;
    gap: 22px;
    padding-top: 28px;
  }

  .auth-brand {
    align-items: center;
    text-align: center;
    order: 0;
  }

  .auth-brand__desc {
    margin-inline: auto;
  }

  .auth-brand__features {
    display: none;
  }

  .auth-brand__foot {
    margin-top: 0;
  }

  .auth-panel {
    order: 1;
  }
}

@media (max-width: 480px) {
  .auth-shell {
    padding: 16px;
  }

  .auth-card {
    padding: 20px 16px;
    border-radius: var(--radius-lg);
  }
}

/* حالت روشن — کمی تاری بیشتر روی برند */
[data-theme="light"] .auth-brand__desc {
  color: var(--text-muted);
}