/* ========================================================
   NITE-RUN — Auth Page Styles
   Two-panel layout on desktop, stacked on mobile.
   Smooth transitions between Login ↔ Register.
   ======================================================== */

/* ---- Page wrapper ---- */
.auth-page {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

/* ---- Card (two-panel horizontal on desktop) ---- */
.auth-card {
  display: flex;
  width: 100%;
  max-width: 780px;
  border: 2px solid var(--black);
  box-shadow: 8px 8px 0 var(--black);
  overflow: hidden;
  background-color: var(--cream);
}

/* ---- Left: branding panel ---- */
.auth-brand {
  width: 300px;
  flex-shrink: 0;
  background-color: var(--blue);
  color: var(--cream);
  padding: clamp(2rem, 3vw, 3rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-right: 2px solid var(--black);
}

.auth-brand__inner {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.auth-brand__logo {
  height: 44px;
  width: auto;
  align-self: flex-start;
  filter: brightness(0) invert(1);
  margin-bottom: 1rem;
}

.auth-brand__title {
  font-size: clamp(1.6rem, 2.5vw, 2rem);
  letter-spacing: 0.04em;
  color: var(--cream);
  line-height: 1.1;
  transition: opacity 0.25s ease;
}

.auth-brand__sub {
  font-size: 0.82rem;
  font-weight: 600;
  opacity: 0.6;
  line-height: 1.5;
  transition: opacity 0.25s ease;
}

.auth-brand__back {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.4;
  transition: opacity 0.2s ease;
  margin-top: var(--space-lg);
}

.auth-brand__back:hover {
  opacity: 0.8;
}

/* ---- Right: form panel ---- */
.auth-form-panel {
  flex: 1;
  padding: clamp(2rem, 3vw, 3rem);
  display: flex;
  flex-direction: column;
}

/* ---- Tab bar with animated indicator ---- */
.auth-tabs {
  display: flex;
  position: relative;
  margin-bottom: var(--space-md);
  border: 2px solid var(--black);
}

.auth-tab {
  flex: 1;
  padding: 0.8em 1em;
  font-family: var(--ff-body);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: center;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 2;
  color: var(--black);
  opacity: 0.4;
  transition: color 0.3s ease, opacity 0.3s ease;
}

.auth-tab--active {
  color: var(--cream);
  opacity: 1;
}

.auth-tab__indicator {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  background-color: var(--black);
  z-index: 1;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.auth-tab__indicator--right {
  transform: translateX(100%);
}

/* ---- Form wrapper (animated height) ---- */
.auth-form-wrap {
  flex: 1;
  overflow: hidden;
  transition: height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* ---- Name field — animated show/hide ---- */
.auth-field--name {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin: 0;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.25s ease,
              margin 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.auth-field--name.auth-field--visible {
  max-height: 120px;
  opacity: 1;
  margin-bottom: 0;
}

/* ---- Error ---- */
.auth-error {
  color: var(--red);
  font-size: 0.78rem;
  font-weight: 600;
  min-height: 1rem;
  text-align: center;
  transition: opacity 0.2s ease;
}

/* ---- Inputs — remove focus outline, shadow is enough ---- */
.auth-form .wiz-form__input:focus-visible {
  outline: none;
}

/* ---- Password field with eye toggle ---- */
.auth-pw-wrap {
  position: relative;
  display: flex;
  align-items: stretch;
}

.auth-pw-input {
  flex: 1;
  padding-right: 3rem !important;
}

.auth-pw-toggle {
  position: absolute;
  right: 2px;
  top: 2px;
  bottom: 2px;
  width: 2.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--black);
  opacity: 0.35;
  transition: opacity 0.15s;
}

.auth-pw-toggle:hover {
  opacity: 0.7;
}

.auth-pw-icon {
  width: 18px;
  height: 18px;
}

.auth-pw-icon--on {
  display: none;
}

.auth-pw-wrap--visible .auth-pw-icon--off {
  display: none;
}

.auth-pw-wrap--visible .auth-pw-icon--on {
  display: block;
}

body.dark .auth-pw-toggle {
  color: #e2dfd6;
}

/* ---- Username field ---- */
.auth-username-wrap {
  display: flex;
  align-items: stretch;
}

.auth-username-at {
  display: flex;
  align-items: center;
  padding: 0 0.7rem;
  background-color: var(--black);
  color: var(--cream);
  font-family: var(--ff-body);
  font-size: 1rem;
  font-weight: 700;
  border: 2px solid var(--black);
  border-right: none;
}

.auth-username-input {
  flex: 1;
  min-width: 0;
}

.auth-username-status {
  font-family: var(--ff-body);
  font-size: 0.88rem;
  font-weight: 700;
  min-height: 1.4em;
  margin-top: 0.5rem;
  padding: 0.35rem 0.6rem;
  transition: color 0.15s, background-color 0.15s;
}

.auth-username-status:empty {
  display: none;
}

.auth-username-status--available {
  color: #15803d;
  background-color: rgba(34, 197, 94, 0.12);
}

.auth-username-status--taken {
  color: var(--red);
  background-color: rgba(229, 62, 62, 0.1);
}

.auth-username-status--checking {
  color: #a16207;
  background-color: rgba(245, 158, 11, 0.1);
}

.auth-field__hint {
  font-size: 0.7rem;
  font-weight: 400;
  opacity: 0.45;
}

/* Dark mode username */
body.dark .auth-username-at {
  background-color: #2a2a32;
  color: #e2dfd6;
  border-color: #2a2a32;
}

body.dark .auth-username-status--available {
  color: #4ade80;
  background-color: rgba(34, 197, 94, 0.15);
}

body.dark .auth-username-status--taken {
  color: #f87171;
  background-color: rgba(239, 68, 68, 0.15);
}

body.dark .auth-username-status--checking {
  color: #fbbf24;
  background-color: rgba(245, 158, 11, 0.12);
}

/* ---- Submit button ---- */
.auth-submit {
  width: 100%;
  justify-content: center;
}

/* ===================================
   DARK MODE
   =================================== */
body.dark .auth-card {
  background-color: #1c1c22;
  border-color: #2a2a32;
  box-shadow: 8px 8px 0 #0e0e11;
}

body.dark .auth-brand {
  background-color: #1e40af;
  border-right-color: #2a2a32;
}

body.dark .auth-tabs {
  border-color: #2a2a32;
}

body.dark .auth-tab {
  color: #e2dfd6;
}

body.dark .auth-tab--active {
  color: #e2dfd6;
}

body.dark .auth-tab__indicator {
  background-color: #2563eb;
}

body.dark .auth-brand__back {
  color: #e2dfd6;
}

/* ===================================
   RESPONSIVE — MOBILE
   =================================== */
@media (max-width: 680px) {
  .auth-page {
    padding: 0;
    align-items: stretch;
  }

  .auth-card {
    flex-direction: column;
    max-width: 100%;
    border: none;
    box-shadow: none;
    min-height: 100vh;
    min-height: 100dvh;
  }

  .auth-brand {
    width: 100%;
    border-right: none;
    border-bottom: 2px solid var(--black);
    padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1.5rem, 4vw, 2rem);
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }

  .auth-brand__inner {
    gap: 0.2rem;
  }

  .auth-brand__logo {
    height: 32px;
    margin-bottom: 0.4rem;
  }

  .auth-brand__title {
    font-size: 1.1rem;
  }

  .auth-brand__sub {
    font-size: 0.72rem;
  }

  .auth-brand__back {
    margin-top: 0;
    flex-shrink: 0;
    font-size: 0.65rem;
  }

  .auth-form-panel {
    padding: clamp(1.5rem, 4vw, 2.5rem);
    flex: 1;
  }

  /* Prevent iOS auto-zoom on input focus (requires >= 16px) */
  .auth-form .wiz-form__input,
  .auth-form .auth-username-input {
    font-size: 16px;
  }

  /* Dark mode mobile border */
  body.dark .auth-card {
    box-shadow: none;
    border: none;
  }

  body.dark .auth-brand {
    border-bottom-color: #2a2a32;
  }
}

/* ---- Password requirements ---- */
.auth-pw-reqs {
  display: none;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.45rem;
}

.auth-pw-reqs--visible {
  display: flex;
}

.auth-pw-req {
  font-family: var(--ff-body);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border: 1.5px solid var(--black);
  opacity: 0.35;
  transition: opacity 0.15s, color 0.15s, border-color 0.15s, background-color 0.15s;
}

.auth-pw-req--pass {
  opacity: 1;
  color: #15803d;
  border-color: #22c55e;
  background-color: rgba(34, 197, 94, 0.12);
}

body.dark .auth-pw-req {
  border-color: #3a3a44;
}

body.dark .auth-pw-req--pass {
  color: #4ade80;
  border-color: #4ade80;
  background-color: rgba(34, 197, 94, 0.15);
}

.auth-forgot {
  display: block;
  background: none;
  border: none;
  font-family: var(--ff-body);
  font-size: 0.8rem;
  color: var(--blue);
  cursor: pointer;
  margin-top: 0.6rem;
  padding: 0;
  text-align: center;
  width: 100%;
  opacity: 0.8;
  transition: opacity 0.15s;
}

.auth-forgot:hover {
  opacity: 1;
}

/* ---- Email verification screen ---- */
.auth-verify {
  display: none;
  justify-content: center;
}

.auth-verify__content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.auth-verify__icon {
  color: var(--blue);
  margin-bottom: 0.5rem;
}

.auth-verify__title {
  font-family: var(--ff-body);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--black);
}

.auth-verify__text {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--black);
  opacity: 0.65;
  line-height: 1.5;
}

.auth-verify__email {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--blue);
  word-break: break-all;
}

.auth-verify__status {
  font-size: 0.78rem;
  font-weight: 600;
  min-height: 1.2em;
}

.auth-verify__status--success {
  color: #15803d;
}

.auth-verify__status--error {
  color: var(--red);
}

body.dark .auth-verify__title {
  color: #e2dfd6;
}

body.dark .auth-verify__text {
  color: #e2dfd6;
}

body.dark .auth-verify__icon {
  color: #60a5fa;
}

/* ---- REDUCED MOTION ---- */
@media (prefers-reduced-motion: reduce) {
  .auth-field--name,
  .auth-tab__indicator,
  .auth-form-wrap {
    transition-duration: 0.01ms !important;
  }
}