/* ==========================================================================
   BASE STYLES & DESIGN SYSTEM для Dolci e Fiori
   ========================================================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700&display=swap');

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: 'Montserrat', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-header-bg);
  overflow-x: hidden;
  margin: 0;
  padding: 0;
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ==========================================================================
   DESIGN SYSTEM - CSS CUSTOM PROPERTIES
   ========================================================================== */

:root {
  /* Colors - Primary Palette */
  --color-bg: #FFFFFF;
  --color-header-bg: #F4EDE5;
  --color-text: #333333;
  --color-text-dark: #0C1C2B;
  --color-text-mobile: #2C2C2C;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  --color-text-light: rgba(44, 44, 44, 0.5);
  
  /* Colors - Brand */
  --color-accent: #A35A63;
  --color-primary: #2A5B55; /* brand green unified */
  --color-primary-hover: #1f4742;
  --color-secondary: #97C7CB; /* бирюзовый, используется в макете для активных элементов */
  --color-primary-dark: #1f4742;
  
  /* Colors - System */
  --color-border: #E0E0E0;
  --color-border-light: #E8DDE1;
  --color-light-bg: #F5F5F5;
  --color-light-gray: #F9F9F9;
  --color-danger: #A35A63;
  --color-success: #4CAF50;
  --color-warning: #FF9800;
  
  /* Colors - Overlay */
  --color-overlay: rgba(0, 0, 0, 0.3);
  --color-overlay-light: rgba(0, 0, 0, 0.15);
  --color-overlay-dark: rgba(0, 0, 0, 0.5);
  
  /* Spacing Scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 20px;
  --space-2xl: 24px;
  --space-3xl: 32px;
  --space-4xl: 40px;
  --space-5xl: 60px;
  --space-6xl: 80px;
  
  /* Typography Scale */
  --font-xs: 12px;
  --font-sm: 14px;
  --font-md: 16px;
  --font-lg: 18px;
  --font-xl: 21px;
  --font-2xl: 24px;
  --font-3xl: 32px;
  --font-4xl: 48px;
  --font-5xl: 57.39px;
  
  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Line Heights */
  --line-height-tight: 1.1;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Border Radius */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 22px;
  --radius-3xl: 24px;
  --radius-pill: 30px;
  --radius-full: 50%;
  
  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-card: 0px -6px 24px 0px rgba(59, 61, 78, 0.05);
  --shadow-modal: 0 8px 32px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-smooth: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-bounce: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  
  /* Z-Index Scale */
  --z-behind: -1;
  --z-normal: 1;
  --z-tooltip: 10;
  --z-dropdown: 20;
  --z-sticky: 30;
  --z-fixed: 40;
  --z-header: 50;
  --z-modal-backdrop: 100;
  --z-modal: 1000;
  --z-mobile-nav: 100;
  --z-mobile-modal: 1001;
  --z-toast: 1100;
  --z-close-btn: 1500;
  
  /* Layout */
  --container-max: 1200px;
  --page-max: 1440px;
  --content-max: 1200px;
  
  /* Component Specific */
  --btn-height: 36px;
  --btn-height-sm: 32px;
  --btn-height-lg: 44px;
  --burger-width: 118px;
  --header-height: 80px;
  --mobile-nav-height: 60px;
  
  /* Breakpoints (for reference in JS) */
  --bp-xs: 375px;
  --bp-sm: 480px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1200px;
  --bp-2xl: 1440px;
}

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--page-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-xl);
  padding-right: var(--space-xl);
}

.container--narrow {
  max-width: var(--container-max);
}

.container--flush {
  padding-left: 0;
  padding-right: 0;
}

/* Display Utilities */
.hidden {
  display: none !important;
}

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

/* State Utilities */
.no-scroll {
  overflow: hidden;
}

.disabled {
  pointer-events: none;
  opacity: 0.6;
}

/* Text Utilities */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.text-uppercase {
  text-transform: uppercase;
}

.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ==========================================================================
   BASE ELEMENT STYLES
   ========================================================================== */

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  text-decoration: underline;
}

/* Images */
img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
}

/* Buttons */
button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* Primary action button used across the site */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  background-color: var(--color-secondary);
  color: #ffffff;
  border: 1px solid var(--color-secondary);
  font-weight: var(--font-weight-semibold);
}

.btn--secondary {
  background-color: var(--color-secondary);
  color: #ffffff;
  border: 1px solid var(--color-secondary);
}

.btn--white {
  background-color: #ffffff;
  color: var(--color-text);
  border: 1px solid rgba(33,33,35,0.05);
}

/* Form Elements */
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

/* Lists */
ul,
ol {
  list-style: none;
}

/* Tables */
table {
  border-collapse: collapse;
  width: 100%;
}

/* Focus Management */
:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* ==========================================================================
   COMPONENT BASE CLASSES
   ========================================================================== */

/* Button Base */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-sm);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  min-height: var(--btn-height);
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

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

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

.btn--primary:hover {
  background-color: var(--color-primary-hover);
}

.btn--secondary {
  background-color: var(--color-secondary);
  color: var(--white);
  border: 1px solid var(--color-secondary);
}

.btn--secondary:hover {
  background-color: #81B7BC;
  border-color: #81B7BC;
}

.btn--sm {
  min-height: var(--btn-height-sm);
  padding: 6px var(--space-md);
  font-size: var(--font-xs);
}

/* Visual feedback when item added to cart */
.btn.added {
  background-color: var(--color-primary) !important;
  color: var(--color-bg) !important;
  border-color: var(--color-primary) !important;
}

/* small scale animation helper */
.btn.scale-down {
  transform: scale(0.96);
  transition: transform 120ms ease;
}

.btn--lg {
  min-height: var(--btn-height-lg);
  padding: var(--space-md) var(--space-3xl);
  font-size: var(--font-md);
}

/* Card Base */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card__header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.card__body {
  padding: var(--space-lg);
}

.card__footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-light-bg);
}

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

@media (max-width: 768px) {
  .container {
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
  }
  
  .hidden-mobile {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .hidden-desktop {
    display: none !important;
  }
}