/* ============================================
   OurFamilyWizard Design System
   Brand Register – Auth Lead Experience Prototype
   ============================================ */

/* ============================================
   DESIGN TOKENS
   ============================================ */

:root {
  /* Colors - Primary */
  --cerulean: #006BA1;
  --deep-blue: #014C72;
  --sky: #7FC8E5;
  --frost: #EEF5F8;

  /* Colors - Neutral */
  --ink: #122845;
  --anchor: #3A5368;
  --slate: #688792;
  --slate-75: #A1B4B8;
  --slate-25: #D5DCDB;
  --paper: #FAF9F3;
  --off-white: #FCFCF9;

  /* Colors - Warm Accents */
  --parchment: #F6F4E8;
  --gilt: #D6A92D;
  --ochre: #755300;
  --lichen: #C9EBCF;
  --nori: #03563A;

  /* Colors - State */
  --success-bg: #CCFAD1;
  --success: #0CA55C;
  --success-strong: #19795F;
  --error-bg: #FAD3CD;
  --error: #D0425C;
  --error-strong: #980B40;

  /* Spacing */
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 20px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;
  --spacing-3xl: 40px;
  --spacing-4xl: 60px;
  --spacing-5xl: 80px;
  --spacing-6xl: 120px;

  /* Border Radius */
  --rounded-button: 5px;
  --rounded-sm: 10px;
  --rounded-md: 15px;
  --rounded-lg: 20px;

  /* Typography */
  --font-body: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica', 'Arial', sans-serif;
  --font-display: Georgia, 'Times New Roman', serif;

  /* Shadows - Brand Register */
  --shadow-ambient-hover: 0 4px 12px rgba(18, 40, 69, 0.08);
  --shadow-floating-card: 0 8px 24px rgba(18, 40, 69, 0.12);
  --shadow-lifted: 0 12px 32px rgba(18, 40, 69, 0.16);

  /* Easing Curves */
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out-quart: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);

  /* Transitions */
  --transition-fast: 150ms var(--ease-out);
  --transition-base: 200ms var(--ease-out);
  --transition-slow: 300ms var(--ease-out);
  --transition-entrance: 600ms var(--ease-out);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.5;
  color: var(--anchor);
  background-color: var(--off-white);
  min-height: 100vh;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--ink);
  margin: 0;
}

h1 {
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.1;
}

h2 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.286;
}

h3 {
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.286;
}

h4 {
  font-size: 24px;
  line-height: 1.143;
}

p {
  margin: 0;
}

/* Body text variations */
.body-large {
  font-size: 18px;
  font-weight: 300;
  line-height: 1.5;
}

.body-emphasis {
  font-weight: 400;
}

.body-medium {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.43;
}

.body-small {
  font-size: 12px;
  font-weight: 400;
  line-height: 1.667;
}

/* Labels */
.label {
  font-size: 10px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.container {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

.container-wide {
  max-width: 1200px;
}

.centered {
  text-align: center;
}

.stack-sm > * + * { margin-top: var(--spacing-sm); }
.stack-md > * + * { margin-top: var(--spacing-md); }
.stack-lg > * + * { margin-top: var(--spacing-lg); }
.stack-xl > * + * { margin-top: var(--spacing-xl); }
.stack-2xl > * + * { margin-top: var(--spacing-2xl); }
.stack-3xl > * + * { margin-top: var(--spacing-3xl); }

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 56px;
  padding: 20px var(--spacing-md);
  border-radius: var(--rounded-button);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 16px;
  letter-spacing: 3px;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  appearance: none;
  -webkit-appearance: none;
  user-select: none;
  white-space: nowrap;
}

.btn:focus {
  outline: none;
}

.btn:active {
  transform: scale(0.98);
}

/* Primary Button */
.btn-primary {
  background-color: var(--cerulean);
  color: var(--off-white);
  border: 1px solid var(--cerulean);
}

.btn-primary:hover {
  background-color: var(--deep-blue);
  border-color: var(--deep-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-floating-card);
}

.btn-primary:focus {
  border-width: 3px;
  padding: 19px 15px;
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-primary:disabled {
  background-color: var(--slate-75);
  border-color: var(--slate-75);
  color: var(--slate-25);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Secondary Button */
.btn-secondary {
  background-color: transparent;
  color: var(--cerulean);
  border: 1px solid var(--cerulean);
}

.btn-secondary:hover {
  background-color: var(--frost);
  transform: translateY(-1px);
}

.btn-secondary:focus {
  border-width: 3px;
  padding: 19px 15px;
}

.btn-secondary:active {
  transform: translateY(0) scale(0.98);
}

/* Google Button (special case) */
.btn-google {
  background-color: white;
  color: var(--ink);
  border: 2px solid var(--slate-25);
  letter-spacing: 0;
  text-transform: none;
  font-weight: 600;
}

.btn-google:hover {
  background-color: var(--frost);
  border-color: var(--cerulean);
  transform: translateY(-2px);
  box-shadow: var(--shadow-ambient-hover);
}

.btn-google:focus {
  border-width: 3px;
  border-color: var(--cerulean);
  padding: 19px 15px;
}

.btn-google:active {
  transform: translateY(0) scale(0.98);
}

/* Full width button variant */
.btn-full {
  width: 100%;
}

/* ============================================
   FORMS
   ============================================ */

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

label {
  font-size: 10px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--ink);
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea {
  height: 56px;
  padding: 15px 16px;
  background-color: var(--paper);
  border: 1px solid #b1bfc2;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 300;
  color: var(--ink);
  transition: border-color var(--transition-base);
}

textarea {
  height: auto;
  min-height: 120px;
  padding: 16px;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: var(--ink);
  opacity: 0.5;
  font-weight: 300;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: #018abc;
  border-width: 1px;
}

input:hover,
textarea:hover {
  border-color: #018abc;
  border-width: 2px;
  padding: 14px 15px; /* Compensate for thicker border */
}

input:disabled,
textarea:disabled {
  background-color: #ebede9;
  border-color: #b1bfc2;
  color: var(--slate);
  opacity: 0.75;
  cursor: not-allowed;
}

/* ============================================
   CARDS & CONTAINERS
   ============================================ */

.card {
  background-color: var(--paper);
  border-radius: var(--rounded-md);
  padding: var(--spacing-xl);
}

.card-elevated {
  box-shadow: var(--shadow-floating-card);
}

/* ============================================
   BADGES & CHIPS
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  border-radius: var(--rounded-lg);
  font-size: 10px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.badge-offer {
  background-color: var(--parchment);
  color: var(--ochre);
}

.badge-success {
  background-color: var(--lichen);
  color: var(--nori);
}

/* ============================================
   DIVIDER
   ============================================ */

.divider {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  font-weight: 400;
  color: var(--slate);
  margin: var(--spacing-xl) 0;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--slate-25);
}

/* ============================================
   ANIMATIONS - BRAND REGISTER
   ============================================ */

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Entrance animations */
.animate-fade-up {
  animation: fadeUp var(--transition-entrance) var(--ease-out) forwards;
  opacity: 0;
}

.animate-fade-in {
  animation: fadeIn var(--transition-slow) var(--ease-out) forwards;
  opacity: 0;
}

.animate-scale-in {
  animation: scaleIn 500ms var(--ease-out) forwards;
  opacity: 0;
}

/* Stagger delays for sequential animations */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .btn:hover,
  .btn:active {
    transform: none;
  }

  @keyframes fadeUp {
    from { opacity: 0; }
    to { opacity: 1; }
  }
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 640px) {
  .container {
    padding: var(--spacing-md);
  }

  .btn {
    letter-spacing: 2px;
  }

  h1 {
    font-size: 32px;
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
  outline: 3px solid var(--cerulean);
  outline-offset: 2px;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-ink { color: var(--ink); }
.text-anchor { color: var(--anchor); }
.text-slate { color: var(--slate); }
.text-cerulean { color: var(--cerulean); }

.bg-off-white { background-color: var(--off-white); }
.bg-paper { background-color: var(--paper); }
.bg-frost { background-color: var(--frost); }
.bg-cerulean { background-color: var(--cerulean); }

.max-w-prose {
  max-width: 65ch;
}