/* ============================================
   Estrellas Bakery - Global Styles
   Shared CSS Variables, Keyframes & Utilities
   ============================================ */

/* ------------------------------------------
   CSS Custom Properties (Design Tokens)
   ------------------------------------------ */
:root {
  /* Color Palette */
  --color-primary: #D4A853;
  --color-primary-dark: #B8923E;
  --color-secondary: #C75B39;
  --color-secondary-dark: #A84A2D;
  --color-background: #FDF8F0;
  --color-background-alt: #F5EFE6;
  --color-surface: #FFFFFF;
  --color-text-primary: #3D2314;
  --color-text-secondary: #6B4423;
  --color-text-muted: #9C7B5C;
  --color-border: #E8DCC8;
  --color-success: #4A7C59;
  --color-error: #C0392B;

  /* Spacing System */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;

  /* Typography */
  --font-display: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;

  /* Animation Timing */
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 0.3s;
  --duration-normal: 0.5s;
  --duration-slow: 0.6s;
  --duration-slower: 0.7s;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(61, 35, 20, 0.06);
  --shadow-md: 0 4px 20px rgba(61, 35, 20, 0.08);
  --shadow-lg: 0 8px 32px rgba(61, 35, 20, 0.12);
  --shadow-hover: 0 12px 40px rgba(61, 35, 20, 0.16);

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

/* ------------------------------------------
   Animation Keyframes
   ------------------------------------------ */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes kenBurns {
  0% {
    transform: scale(1);
  }
  100% {
    transform: scale(1.05);
  }
}

@keyframes underlineGrow {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

/* ------------------------------------------
   Scroll Reveal Animation Classes
   ------------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-default),
              transform var(--duration-slow) var(--ease-default);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ------------------------------------------
   Utility Classes
   ------------------------------------------ */

/* Typography Utilities */
.font-display {
  font-family: var(--font-display);
}

.font-body {
  font-family: var(--font-body);
}

/* Text Colors */
.text-primary {
  color: var(--color-text-primary);
}

.text-secondary {
  color: var(--color-text-secondary);
}

.text-muted {
  color: var(--color-text-muted);
}

.text-gold {
  color: var(--color-primary);
}

/* Background Colors */
.bg-cream {
  background-color: var(--color-background);
}

.bg-cream-alt {
  background-color: var(--color-background-alt);
}

.bg-surface {
  background-color: var(--color-surface);
}

.bg-brown {
  background-color: var(--color-text-primary);
}

/* Container */
.container-custom {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

@media (min-width: 640px) {
  .container-custom {
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
  }
}

@media (min-width: 1024px) {
  .container-custom {
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
  }
}

/* Section Spacing */
.section-padding {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

@media (min-width: 1024px) {
  .section-padding {
    padding-top: var(--space-4xl);
    padding-bottom: var(--space-4xl);
  }
}

/* Primary Button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  background-color: var(--color-primary);
  color: var(--color-text-primary);
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-default);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

/* Secondary Button */
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  background-color: transparent;
  color: var(--color-text-primary);
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 2px solid var(--color-text-primary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-default);
}

.btn-secondary:hover {
  background-color: var(--color-text-primary);
  color: var(--color-background);
  transform: translateY(-2px);
}

/* Card Component */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--duration-fast) var(--ease-default);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

/* Product Card */
.product-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--duration-fast) var(--ease-default);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.product-card img {
  transition: transform var(--duration-normal) var(--ease-default);
}

.product-card:hover img {
  transform: scale(1.05);
}

/* Form Input */
.form-input {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--color-text-primary);
  background-color: var(--color-surface);
  transition: all var(--duration-fast) var(--ease-default);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(212, 168, 83, 0.15);
}

.form-input:disabled {
  background-color: var(--color-background-alt);
  cursor: not-allowed;
}

/* Form Label */
.form-label {
  display: block;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

/* Navigation Link Underline Animation */
.nav-link {
  position: relative;
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-default);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link:hover::after {
  transform: scaleX(1);
}

/* Icon Container */
.icon-container {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: rgba(212, 168, 83, 0.15);
  color: var(--color-primary);
}

/* Divider */
.divider {
  height: 1px;
  background-color: var(--color-border);
  margin: var(--space-lg) 0;
}

/* Visually Hidden (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: 0;
}

/* Focus Visible (Accessibility) */
.focus-visible:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Smooth Scroll */
html {
  scroll-behavior: smooth;
}

/* Selection Color */
::selection {
  background-color: rgba(212, 168, 83, 0.3);
  color: var(--color-text-primary);
}