/* KidLinks Custom Styles */
/* Used alongside Tailwind CSS via CDN */

/* ==================== BRAND COLORS (CSS Custom Properties) ==================== */
:root {
  --kidlinks-blue: #182F4F;
  --kidlinks-light-blue: #3da4da;
  --kidlinks-yellow: #fcd34d;
  --kidlinks-white: #FFFFFF;
  --kidlinks-gray: #6B7280;
  --kidlinks-light-gray: #F3F4F6;
  --pastel-blue: #E8F4FC;
}

/* ==================== BASE STYLES ==================== */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==================== HERO GRADIENT ==================== */
.hero-gradient {
  background: linear-gradient(135deg, var(--kidlinks-blue) 0%, var(--kidlinks-light-blue) 100%);
  position: relative;
  overflow: hidden;
}

.hero-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-image: url('/assets/doodle-only-full-opacity-transparent-sandy.png');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  opacity: 0.15;
  pointer-events: none;
  /* Fade in from middle of screen */
  -webkit-mask-image: linear-gradient(to right, transparent 0%, transparent 30%, black 70%);
  mask-image: linear-gradient(to right, transparent 0%, transparent 30%, black 70%);
}

/* Mobile hero gradient and doodle positioning */
@media (max-width: 768px) {
  .hero-gradient {
    /* Vertical gradient on mobile: dark top to light bottom */
    background: linear-gradient(to bottom, var(--kidlinks-blue) 0%, var(--kidlinks-light-blue) 100%);
  }
  
  .hero-gradient::before {
    /* Position at bottom, extend beyond sides */
    top: auto;
    right: -50%;
    bottom: 0;
    left: -50%;
    width: 200%;
    height: 70%;
    
    /* Size to fill height, width will overflow (hidden by parent) */
    background-size: auto 100%;
    background-position: center bottom;
    
    /* No scale transform on mobile */
    transform: none;
    
    /* Higher opacity since mask will fade it */
    opacity: 0.22;
    
    /* Gradual fade - transparent at top, fully visible at bottom */
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, transparent 20%, black 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, transparent 20%, black 100%);
  }
}

/* ==================== GLASS CARD EFFECT ==================== */
.glass-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1.5rem;
  padding: 2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

/* Code inputs inside glass card - lighter styling */
.glass-card .code-input {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--kidlinks-blue);
}

.glass-card .code-input:focus {
  border-color: var(--kidlinks-yellow);
  box-shadow: 0 0 0 3px rgba(252, 211, 77, 0.3);
}

.glass-card .code-input:not(:placeholder-shown) {
  border-color: var(--kidlinks-yellow);
}

/* ==================== TEXTURED BACKGROUND ==================== */
.textured-bg {
  background-color: #FAFBFC;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(61, 164, 218, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(252, 211, 77, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(24, 47, 79, 0.02) 0%, transparent 70%);
}

/* ==================== CTA GRADIENT ==================== */
.cta-gradient {
  background: linear-gradient(180deg, #FFFFFF 0%, var(--pastel-blue) 100%);
}

/* ==================== CODE INPUT STYLING ==================== */
.code-input {
  width: 2.75rem;
  height: 3.25rem;
  text-align: center;
  font-size: 1.25rem;
  font-weight: 600;
  text-transform: uppercase;
  border: 2px solid var(--kidlinks-light-gray);
  border-radius: 0.5rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  background: white;
}

.code-input:focus {
  outline: none;
  border-color: var(--kidlinks-light-blue);
  box-shadow: 0 0 0 3px rgba(61, 164, 218, 0.2);
}

.code-input:not(:placeholder-shown) {
  border-color: var(--kidlinks-blue);
}

/* Larger code inputs on tablet+ */
@media (min-width: 640px) {
  .code-input {
    width: 3.25rem;
    height: 3.75rem;
    font-size: 1.5rem;
  }
}

/* ==================== PRIMARY BUTTON ==================== */
.btn-primary {
  background-color: var(--kidlinks-yellow);
  color: var(--kidlinks-blue);
  font-weight: 600;
  padding: 0.875rem 2rem;
  border-radius: 0.75rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
  border: none;
  cursor: pointer;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(252, 211, 77, 0.4);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ==================== SECONDARY BUTTON ==================== */
.btn-secondary {
  background-color: var(--kidlinks-light-blue);
  color: var(--kidlinks-white);
  font-weight: 600;
  padding: 0.75rem 2rem;
  border-radius: 0.5rem;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
  border: none;
  cursor: pointer;
}

.btn-secondary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(61, 164, 218, 0.4);
}

/* ==================== FEATURE CARDS ==================== */
.feature-card {
  background: white;
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.06);
}

.feature-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, var(--kidlinks-light-blue) 0%, var(--kidlinks-blue) 100%);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

/* ==================== FORM ELEMENTS ==================== */
.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--kidlinks-light-gray);
  border-radius: 0.5rem;
  font-size: 1rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--kidlinks-light-blue);
  box-shadow: 0 0 0 3px rgba(61, 164, 218, 0.2);
}

.form-input::placeholder {
  color: var(--kidlinks-gray);
}

.form-label {
  display: block;
  font-weight: 500;
  color: var(--kidlinks-blue);
  margin-bottom: 0.5rem;
}

/* ==================== ERROR & SUCCESS MESSAGES ==================== */
.error-message {
  background-color: #FEE2E2;
  border: 1px solid #FECACA;
  color: #DC2626;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  text-align: center;
  font-size: 0.875rem;
}

.success-message {
  background-color: #D1FAE5;
  border: 1px solid #A7F3D0;
  color: #059669;
  padding: 1rem;
  border-radius: 0.5rem;
  text-align: center;
}

/* ==================== LOADING SPINNER ==================== */
.spinner {
  width: 1.5rem;
  height: 1.5rem;
  border: 3px solid var(--kidlinks-light-gray);
  border-top-color: var(--kidlinks-light-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ==================== RADIO BUTTON STYLING ==================== */
.radio-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border: 2px solid var(--kidlinks-light-gray);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.radio-option:hover {
  border-color: var(--kidlinks-light-blue);
}

.radio-option.selected {
  border-color: var(--kidlinks-light-blue);
  background-color: rgba(61, 164, 218, 0.1);
}

/* ==================== PREVIEW CARD (Invite Page) ==================== */
.preview-card {
  background-color: var(--kidlinks-white);
  border-radius: 1rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  overflow: hidden;
}

/* ==================== AVATAR STYLES ==================== */
.child-avatar {
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--kidlinks-light-blue);
}

.family-photo {
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--kidlinks-yellow);
}

.avatar-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--kidlinks-light-gray);
  color: var(--kidlinks-gray);
  font-size: 1.5rem;
}

/* ==================== APP LINK BUTTON ==================== */
.app-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--kidlinks-blue);
  color: var(--kidlinks-white);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-size: 0.875rem;
  transition: background-color 0.15s ease;
}

.app-link:hover {
  background-color: #0f1f33;
}

/* ==================== MOBILE UTILITIES ==================== */
.mobile-only {
  display: none;
}

@media (max-width: 640px) {
  .mobile-only {
    display: block;
  }
}

/* ==================== GLASS FORM INPUTS (for dark backgrounds) ==================== */
.form-input-glass {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.95);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 0.5rem;
  font-size: 1rem;
  color: var(--kidlinks-blue);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input-glass:focus {
  outline: none;
  border-color: var(--kidlinks-yellow);
  box-shadow: 0 0 0 3px rgba(252, 211, 77, 0.3);
}

.form-input-glass::placeholder {
  color: var(--kidlinks-gray);
}

/* ==================== GLASS RADIO OPTIONS ==================== */
.radio-option-glass {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.625rem 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
  color: var(--kidlinks-white);
}

.radio-option-glass:hover {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.15);
}

.radio-option-glass.selected {
  border-color: var(--kidlinks-yellow);
  background: rgba(252, 211, 77, 0.15);
}

/* ==================== FIELD ERROR STYLING ==================== */
.field-error {
  color: #DC2626;
  font-size: 0.75rem;
  margin-top: 0.25rem;
  text-align: left;
}

.input-error {
  border-color: #DC2626 !important;
}

.input-error:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.2) !important;
}

/* Glass input error state */
.form-input-glass.input-error {
  border-color: #FCA5A5 !important;
}

.form-input-glass.input-error:focus {
  box-shadow: 0 0 0 3px rgba(252, 165, 165, 0.3) !important;
}

/* ==================== MODERN FORM INPUTS ==================== */
.form-input-modern {
  width: 100%;
  padding: 0.625rem 0.875rem;
  background: #F9FAFB;
  border: 1.5px solid #E5E7EB;
  border-radius: 0.625rem;
  font-size: 0.9375rem;
  color: #111827;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.form-input-modern:focus {
  outline: none;
  background: #FFFFFF;
  border-color: var(--kidlinks-light-blue);
  box-shadow: 0 0 0 3px rgba(61, 164, 218, 0.1);
}

.form-input-modern::placeholder {
  color: #9CA3AF;
}

.form-input-modern.input-error {
  border-color: #DC2626;
  background: #FEF2F2;
}

/* ==================== RADIO CHIPS (pill-style toggles) ==================== */
.radio-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  background: #F3F4F6;
  border: 1.5px solid transparent;
  border-radius: 2rem;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  color: #6B7280;
  transition: all 0.15s ease;
}

.radio-chip:hover {
  background: #E5E7EB;
}

.radio-chip.selected {
  background: rgba(61, 164, 218, 0.1);
  border-color: var(--kidlinks-light-blue);
  color: var(--kidlinks-blue);
}

/* ==================== HIDDEN UTILITY ==================== */
.hidden {
  display: none !important;
}