/* Auth pages (login.html, signup.html)
   Reuses the cream/beige palette and 480px app-container shell from profile.css. */

:root {
  --lightGreen: #d8d8a3;
  --lightPeach: #ffe1c5;
  --paleCream: #ffedcc;
  --mutedBrown: #b29586;
  --bgLight: #faf8f5;
  --cardWhite: #ffffff;
  --textDark: #5a4b43;
  --textLight: #8c776c;
  --danger: #c75454;

  --borderRadiusCard: 16px;
  --borderRadiusPill: 999px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: #e0e0e0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  color: var(--textDark);
}

.app-container {
  width: 100%;
  max-width: 480px;
  min-width: 375px;
  height: 100vh;
  background-color: var(--paleCream);
  position: relative;
  overflow-y: auto;
  overflow-x: hidden;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
}

/* Brand header at top */
.auth-header {
  padding: 48px 24px 24px;
  background: linear-gradient(to bottom right, var(--lightPeach), var(--paleCream));
  border-bottom-left-radius: 24px;
  border-bottom-right-radius: 24px;
  text-align: center;
}

.auth-logo {
  width: 88px;
  height: 88px;
  background-color: var(--cardWhite);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.6rem;
  margin: 0 auto 16px;
  box-shadow: 0 4px 12px rgba(178, 149, 134, 0.25);
  border: 3px solid var(--lightGreen);
}

.auth-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--mutedBrown);
  letter-spacing: 1px;
}

.auth-subtitle {
  font-size: 0.9rem;
  color: var(--textLight);
  margin-top: 6px;
}

/* Form card */
.auth-card {
  background-color: var(--cardWhite);
  margin: 20px 16px 16px;
  padding: 24px 20px;
  border-radius: var(--borderRadiusCard);
  box-shadow: 0 3px 10px rgba(178, 149, 134, 0.1);
}

.auth-card h2 {
  font-size: 1.15rem;
  color: var(--mutedBrown);
  font-weight: 700;
  margin-bottom: 18px;
  text-align: center;
}

.field {
  margin-bottom: 14px;
}

.field-label {
  display: block;
  font-size: 0.78rem;
  color: var(--textLight);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  font-weight: 600;
}

.field-input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--paleCream);
  background-color: var(--bgLight);
  border-radius: 12px;
  font-size: 0.95rem;
  color: var(--textDark);
  font-family: inherit;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.field-input:focus {
  outline: none;
  border-color: var(--mutedBrown);
  background-color: var(--cardWhite);
}

.field-input::placeholder {
  color: #c4b8b0;
}

.field-hint {
  font-size: 0.72rem;
  color: var(--textLight);
  margin-top: 4px;
}

/* Emoji picker for signup */
.emoji-picker {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  margin-top: 4px;
}

.emoji-option {
  background-color: var(--bgLight);
  border: 1.5px solid transparent;
  border-radius: 10px;
  padding: 8px 0;
  font-size: 1.4rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.emoji-option:hover {
  background-color: var(--paleCream);
  transform: scale(1.05);
}

.emoji-option.selected {
  background-color: var(--lightPeach);
  border-color: var(--mutedBrown);
}

/* Submit button */
.auth-submit {
  width: 100%;
  padding: 14px;
  background-color: var(--mutedBrown);
  color: var(--cardWhite);
  border: none;
  border-radius: var(--borderRadiusPill);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
  transition: transform 0.15s ease, background-color 0.2s ease;
  letter-spacing: 0.5px;
}

.auth-submit:hover:not(:disabled) {
  background-color: #9a7e70;
  transform: translateY(-1px);
}

.auth-submit:disabled {
  background-color: #c4b8b0;
  cursor: not-allowed;
}

/* Error display */
.auth-error {
  background-color: #fdecec;
  border: 1px solid var(--danger);
  color: var(--danger);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.85rem;
  margin-bottom: 14px;
  display: none;
}

.auth-error.show {
  display: block;
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

/* Switch link (login ↔ signup) */
.auth-switch {
  text-align: center;
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--textLight);
}

.auth-switch a {
  color: var(--mutedBrown);
  font-weight: 600;
  text-decoration: none;
  margin-left: 4px;
}

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

/* Loading spinner inside button */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--cardWhite);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}