/* ============================================================
   SMART KITCHEN – Auth Styling
   ============================================================ */

:root {
  --green-primary: #1a9e5c;
  --green-dark:    #14784a;
  --green-light:   #e8f5ee;
  --text-dark:     #1a1f1e;
  --text-muted:    #6b7c78;
  --bg-base:       #f2f7f4;
  --shadow:        0 10px 40px rgba(0, 0, 0, 0.04);
  --radius:        16px;
  --input-bg:      #fafdfc;
  --border-color:  #e2eee8;
  --error:         #e53e3e;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-dark);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

/* Container */
.auth-container {
  width: 100%;
  max-width: 480px;
  text-align: center;
  animation: fade-in 0.6s ease-out;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Header & Logo */
.auth-header {
  margin-bottom: 2.5rem;
}

.auth-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
  transition: transform 0.2s ease;
}

.auth-logo:hover { transform: scale(1.02); }

.logo-icon { font-size: 1.6rem; }

#auth-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* Card */
.auth-card {
  background: #ffffff;
  padding: 3rem 2.8rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: left;
  position: relative;
  overflow: hidden;
}

/* Form Styling */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  color: var(--text-dark);
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 1rem;
  color: #a0aec0;
  font-size: 1rem;
  pointer-events: none;
  transition: color 0.2s;
}

.input-wrapper input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.8rem;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-dark);
  transition: all 0.2s ease;
}

.input-wrapper input:focus {
  outline: none;
  border-color: var(--green-primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(26, 158, 92, 0.08);
}

.input-wrapper input:focus + .input-icon {
  color: var(--green-primary);
}

.input-wrapper input::placeholder {
  color: #cbd5e0;
}

/* Errors */
.error-msg {
  display: none;
  font-size: 0.8rem;
  color: var(--error);
  margin-top: 0.4rem;
}

.form-group.has-error input {
  border-color: var(--error);
}

.form-group.has-error .error-msg {
  display: block;
}

/* Submit Button */
.auth-submit-btn {
  width: 100%;
  padding: 1rem;
  background: var(--green-primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(26, 158, 92, 0.25);
}

.auth-submit-btn:hover {
  background: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(26, 158, 92, 0.35);
}

.auth-submit-btn:active { transform: translateY(0); }

.auth-submit-btn i {
  font-size: 0.85rem;
  transition: transform 0.3s ease;
}

.auth-submit-btn:hover i { transform: translateX(4px); }

/* Footer Links */
.auth-footer {
  margin-top: 2rem;
  text-align: center;
}

#toggle-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.4rem;
}

#toggle-auth {
  color: var(--green-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

#toggle-auth:hover {
  color: var(--green-dark);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.back-link i { font-size: 0.75rem; }
.back-link:hover { color: var(--text-dark); }

/* Feedback messages */
.form-feedback {
  padding: 0.8rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  display: none;
  text-align: center;
}

.form-feedback.success {
  display: block;
  background: var(--green-light);
  color: var(--green-dark);
  border: 1px solid var(--green-primary);
}

.form-feedback.error {
  display: block;
  background: #fff5f5;
  color: var(--error);
  border: 1px solid #feb2b2;
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--green-light);
  border-top-color: var(--green-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Responsive adjustments */
@media (max-width: 480px) {
  .auth-card {
    padding: 2.2rem 1.8rem;
  }
}