/* ==========================================================================
   LLW AstroCare — Auth (login/signup)
   Relies on tokens.css being loaded first for --bg, --surface, --accent, etc.
   ========================================================================== */

.auth-page{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:28px;
  padding:32px 16px 60px;
  position:relative;
  background:var(--bg);
}
.auth-bg-glow{
  position:absolute; inset:-20% -10%; background:var(--glow);
  pointer-events:none; z-index:0;
}
.auth-brand{
  position:relative; z-index:2;
  display:flex; align-items:center; gap:10px;
  font-family:var(--font-display); font-size:19px; font-weight:600;
}
.auth-brand-mark{
  width:30px; height:30px; border-radius:50%;
  background:conic-gradient(from 180deg, var(--accent), var(--accent-2), var(--accent));
}

/* ---------- Card shell ---------- */
.auth-card{
  position:relative; z-index:2;
  width:100%; max-width:920px; min-height:600px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-l);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
  display:grid;
  grid-template-columns:1fr 1fr;
}

.form-panel{
  position:relative;
  grid-row:1;
  padding:56px 48px;
  display:flex; align-items:center;
  overflow:hidden;
}
.panel-login{ grid-column:1; }
.panel-signup{ grid-column:2; }

.auth-form{
  width:100%; max-width:380px; margin-inline:auto;
  display:flex; flex-direction:column; gap:16px;
  transition:opacity var(--dur-s) var(--ease-out), transform var(--dur-s) var(--ease-out);
}
.auth-form[hidden]{ display:none; }
.auth-form h1{ font-size:clamp(1.5rem,2.6vw,1.9rem); margin-top:10px; }
.auth-sub{ color:var(--text-soft); font-size:14px; margin-top:-6px; }

/* ---------- Fields ---------- */
.field{ display:flex; flex-direction:column; gap:6px; }
.field label{ font-size:13px; font-weight:600; color:var(--text); }
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="password"]{
  width:100%;
  padding:12px 14px;
  border-radius:var(--radius-s);
  border:1px solid var(--border);
  background:var(--surface-2);
  color:var(--text);
  font-family:var(--font-body);
  font-size:14.5px;
  transition:border-color var(--dur-s), box-shadow var(--dur-s);
}
.field input:focus{
  outline:none; border-color:var(--accent-2);
  box-shadow:0 0 0 3px color-mix(in srgb, var(--accent-2) 20%, transparent);
}
.field input.is-invalid{ border-color:#C24545; }
.field input.is-valid{ border-color:#3E9A5B; }

.field-hint{ font-size:12px; color:var(--text-soft); }
.field-error{
  font-size:12px; color:#C24545; min-height:0;
  display:none;
}
.field-error.is-visible{ display:block; }

.input-with-action{ position:relative; display:flex; }
.input-with-action input{ padding-right:64px; }
.input-action{
  position:absolute; right:6px; top:50%; transform:translateY(-50%);
  font-size:11.5px; font-weight:600; color:var(--accent-2);
  padding:6px 10px; border-radius:999px;
}
.input-action:hover{ background:var(--bg-alt); }

.phone-input{
  display:flex; align-items:stretch;
  border-radius:var(--radius-s); border:1px solid var(--border);
  background:var(--surface-2); overflow:hidden;
  transition:border-color var(--dur-s), box-shadow var(--dur-s);
}
.phone-input:focus-within{
  border-color:var(--accent-2);
  box-shadow:0 0 0 3px color-mix(in srgb, var(--accent-2) 20%, transparent);
}
.phone-prefix{
  display:flex; align-items:center; padding:0 12px;
  font-family:var(--font-mono); font-size:13.5px; color:var(--text-soft);
  border-right:1px solid var(--border); background:var(--bg-alt);
}
.phone-input input{
  border:none; background:transparent; box-shadow:none !important;
  padding:12px 14px;
}
.phone-input.is-invalid{ border-color:#C24545; }
.phone-input.is-valid{ border-color:#3E9A5B; }

/* ---------- Password strength ---------- */
.strength-meter{
  height:5px; border-radius:999px; background:var(--bg-alt); overflow:hidden;
}
.strength-meter span{
  display:block; height:100%; width:0%; border-radius:999px;
  background:#C24545; transition:width var(--dur-s) var(--ease-out), background var(--dur-s);
}

/* ---------- Checkbox ---------- */
.field-checkbox{ gap:4px; }
.checkbox-row{
  display:flex; align-items:flex-start; gap:10px;
  font-size:13.5px; color:var(--text-soft); font-weight:400; cursor:pointer;
}
.checkbox-row input[type="checkbox"]{
  margin-top:3px; width:16px; height:16px; accent-color:var(--accent-2); flex:none;
}
.link-btn{
  color:var(--accent-2); font-weight:600; text-decoration:underline;
  text-underline-offset:2px; font-size:inherit;
}

/* ---------- Alerts ---------- */
.form-alert{
  font-size:13px; padding:10px 12px; border-radius:var(--radius-s);
  display:none;
}
.form-alert.is-error{ display:block; background:color-mix(in srgb,#C24545 12%,transparent); color:#C24545; }
.form-alert.is-success{ display:block; background:color-mix(in srgb,#3E9A5B 14%,transparent); color:#3E9A5B; }

/* ---------- Buttons / submit ---------- */
.auth-submit{ width:100%; margin-top:6px; position:relative; }
.auth-submit:disabled{ opacity:.6; cursor:not-allowed; transform:none !important; }
.btn-spinner{
  display:none; width:16px; height:16px; border-radius:50%;
  border:2px solid color-mix(in srgb, var(--accent-ink) 35%, transparent);
  border-top-color:var(--accent-ink); animation:spin .7s linear infinite;
}
.is-loading .btn-label{ opacity:.5; }
.is-loading .btn-spinner{ display:inline-block; }
@keyframes spin{ to{ transform:rotate(360deg); } }

.forgot-link{ align-self:flex-start; font-size:13px; margin-top:-6px; }
.back-btn{
  align-self:flex-start; font-size:13px; color:var(--text-soft); font-weight:600;
  margin-bottom:-6px;
}
.back-btn:hover{ color:var(--text); }

/* ---------- OTP inputs ---------- */
.otp-group{ display:flex; gap:10px; }
.otp-group input{
  width:46px; height:54px; text-align:center; font-size:20px; font-weight:600;
  border-radius:var(--radius-s); border:1px solid var(--border);
  background:var(--surface-2); color:var(--text); font-family:var(--font-mono);
}
.otp-group input:focus{
  outline:none; border-color:var(--accent-2);
  box-shadow:0 0 0 3px color-mix(in srgb, var(--accent-2) 20%, transparent);
}
.otp-group input.is-invalid{ border-color:#C24545; }
.resend-row{ margin-top:4px; }
.resend-row .link-btn{ text-decoration:none; font-size:12.5px; }
.resend-row .link-btn:disabled{ color:var(--text-soft); cursor:not-allowed; }

/* ---------- Success screen ---------- */
.auth-success{
  width:100%; max-width:380px; margin-inline:auto;
  display:flex; flex-direction:column; align-items:center; text-align:center; gap:14px;
}
.success-mark{
  width:56px; height:56px; border-radius:50%;
  background:color-mix(in srgb,#3E9A5B 16%,transparent); color:#3E9A5B;
  display:flex; align-items:center; justify-content:center; font-size:26px; font-weight:700;
}

/* ---------- Overlay (desktop slide-switch) ---------- */
.overlay-container{
  position:absolute; top:0; left:50%; width:50%; height:100%;
  overflow:hidden; z-index:5;
  transition:transform var(--dur-m) var(--ease-out);
}
.overlay{
  position:relative; left:-100%; width:200%; height:100%;
  background:linear-gradient(135deg, var(--accent-2), var(--accent));
  color:#fff;
  display:flex;
  transition:transform var(--dur-m) var(--ease-out);
}
.overlay-panel{
  width:50%; height:100%; display:flex; flex-direction:column;
  align-items:center; justify-content:center; text-align:center;
  padding:56px 44px; gap:14px;
}
.overlay-panel h2{ font-family:var(--font-display); font-size:1.7rem; color:#fff; }
.overlay-panel p{ font-size:14px; opacity:.9; max-width:30ch; }
.overlay-btn{ color:#fff; border-color:rgba(255,255,255,.55); margin-top:10px; }
.overlay-btn:hover{ border-color:#fff; background:rgba(255,255,255,.08); }

/* Slide state: signup active -> overlay moves left, shows "welcome back / sign in" */
.auth-card.is-signup .overlay-container{ transform:translateX(-100%); }
.auth-card.is-signup .overlay{ transform:translateX(50%); }

/* Panel visibility: only one form panel visible at a time, sliding under overlay */
.panel-login, .panel-signup{
  transition:opacity var(--dur-m) var(--ease-out);
}
.auth-card.is-signup .panel-login{ opacity:0; pointer-events:none; }
.auth-card:not(.is-signup) .panel-signup{ opacity:0; pointer-events:none; }

.mobile-switch{ display:none; }

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .auth-card{ grid-template-columns:1fr; max-width:460px; min-height:0; }
  .form-panel{ grid-column:1; padding:40px 26px 32px; }
  .panel-login, .panel-signup{ grid-row:1; }
  .overlay-container{ display:none; }

  /* both panels stack; only show the active one via data attribute on card */
  .auth-card:not(.is-signup) .panel-signup{ display:none; }
  .auth-card.is-signup .panel-login{ display:none; }
  .auth-card.is-signup .panel-signup{ opacity:1; pointer-events:auto; }

  .mobile-switch{
    position:relative; z-index:2;
    display:flex; gap:8px; background:var(--surface-2);
    border:1px solid var(--border); border-radius:999px; padding:4px;
  }
  .mobile-switch-btn{
    padding:9px 22px; border-radius:999px; font-size:13.5px; font-weight:600;
    color:var(--text-soft);
  }
  .mobile-switch-btn.is-active{ background:var(--accent); color:var(--accent-ink); }
}
@media (max-width:480px){
  .otp-group input{ width:38px; height:48px; font-size:17px; }
  .otp-group{ gap:7px; }
}

/* ---------- Privacy modal ---------- */
.modal-backdrop{
  position:fixed; inset:0; z-index:200;
  background:rgba(16,14,31,.55);
  display:flex; align-items:center; justify-content:center;
  padding:20px;
}
.modal-backdrop[hidden]{ display:none; }
.modal{
  position:relative; width:100%; max-width:520px;
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-l);
  padding:36px; box-shadow:var(--shadow-soft);
  display:flex; flex-direction:column; gap:12px;
  max-height:85vh; overflow-y:auto;
}
.modal h2{ font-size:1.3rem; margin-top:6px; }
.modal-body p{ font-size:14px; color:var(--text-soft); margin-top:10px; line-height:1.65; }
.modal-close{
  position:absolute; top:16px; right:16px; width:30px; height:30px; border-radius:50%;
  background:var(--surface-2); color:var(--text-soft); font-size:13px;
}
.modal-close:hover{ color:var(--text); }
.modal-readmore{ align-self:flex-start; margin-top:8px; }


.segmented-toggle { display: flex; gap: 8px; }
.segmented-btn {
  flex: 1; padding: 10px; border: 1px solid var(--border-color, #ccc);
  border-radius: 8px; background: transparent; cursor: pointer;
}
.segmented-btn.is-active { background: var(--primary-color, #333); color: #fff; border-color: transparent; }
.field[hidden] { display: none !important; }