/* ==============================================
   MAIN.CSS — Global Styles, Variables, Reset, Layout
   ============================================== */

/* --- Custom Properties --- */
:root {
  /* Colors */
  --color-primary: #15294d;
  --color-primary-light: #1f3a66;
  --color-primary-dark: #0e1c38;
  --color-accent: #2c59a7;
  --color-accent-hover: #224a8c;
  --color-accent-light: #e5eaf4;
  --color-secondary: #9fa0a1;
  --color-secondary-hover: #86888a;
  --color-primary: #1b2a4a;
  --color-primary-light: #263d66;
  --color-primary-dark: #0f1d35;
  --color-accent: #c8922a;
  --color-accent-hover: #b07f22;
  --color-accent-light: #fdf6e7;
  --color-secondary: #d45635;
  --color-secondary-hover: #b8462a;
  --color-white: #ffffff;
  --color-off-white: #f8f9fa;
  --color-light-grey: #e9ecef;
  --color-mid-grey: #adb5bd;
  --color-dark-grey: #495057;
  --color-text: #212529;
  --color-text-light: #6c757d;
  --color-danger: #dc3545;
  --color-warning: #ffc107;
  --color-success: #28a745;
  --color-info: #17a2b8;

  /* Typography */
  --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 960px;
  --header-height: 72px;
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 12px;
  --border-radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.16);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

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

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-normal);
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
}

/* --- Typography Scale --- */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 2rem; }
.text-4xl { font-size: 2.5rem; }
.text-5xl { font-size: 3.5rem; }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

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

.section {
  padding: var(--space-4xl) 0;
}

.section--grey {
  background-color: var(--color-off-white);
}

.section--dark {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section__title {
  font-size: 2rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.section--dark .section__title {
  color: var(--color-white);
}

.section__subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section--dark .section__subtitle {
  color: var(--color-mid-grey);
}

/* --- Grid System --- */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid--4,
  .grid--3,
  .grid--2 { grid-template-columns: 1fr; }
}

/* --- Flex Utilities --- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* --- Text Utilities --- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }
.uppercase { text-transform: uppercase; }
.tracking-wide { letter-spacing: 0.05em; }

/* ================================
   HEADER / NAVIGATION
   ================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-white);
  height: var(--header-height);
  transition: box-shadow var(--transition-base);
}

.site-header--scrolled {
  box-shadow: var(--shadow-md);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.site-logo img {
  height: 38px;
  width: auto;
  display: block;
}

.site-logo__icon {
  width: 40px;
  height: 40px;
  background: var(--color-accent);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.2rem;
}

/* Main Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.main-nav__item {
  position: relative;
}

.main-nav__link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.9rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: var(--border-radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.main-nav__link:hover {
  color: var(--color-accent);
  background: var(--color-accent-light);
}

.main-nav__link .chevron {
  font-size: 0.6rem;
  transition: transform var(--transition-fast);
}

.main-nav__item:hover .chevron {
  transform: rotate(180deg);
}

/* Dropdown */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  padding: var(--space-sm) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-fast);
  z-index: 100;
}

.main-nav__item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu__link {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.9rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.dropdown-menu__link:hover {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

/* Nav Actions (Cart) */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.cart-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  border-radius: var(--border-radius-sm);
  transition: color var(--transition-fast);
}

.cart-btn:hover {
  color: var(--color-accent);
}

.cart-btn__icon {
  font-size: 1.3rem;
}

.cart-btn__count {
  position: absolute;
  top: 0;
  right: 0;
  width: 18px;
  height: 18px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 0.65rem;
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translate(25%, -25%);
}

.cart-btn__count:empty,
.cart-btn__count[data-count="0"] {
  display: none;
}

/* Mobile Menu Toggle */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  cursor: pointer;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Styles */
@media (max-width: 1024px) {
  .mobile-menu-btn {
    display: flex;
  }

  .main-nav__list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--color-white);
    padding: var(--space-lg);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
  }

  .main-nav__list.active {
    transform: translateX(0);
  }

  .main-nav__link {
    padding: var(--space-md);
    font-size: 1rem;
    border-bottom: 1px solid var(--color-light-grey);
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding-left: var(--space-lg);
    display: none;
  }

  .main-nav__item.dropdown-open .dropdown-menu {
    display: block;
  }
}

/* ================================
   FOOTER
   ================================ */
.site-footer {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer__brand {
  max-width: 300px;
}

.footer__brand-name {
  margin-bottom: var(--space-md);
}

.footer__brand-name img {
  height: 40px;
  width: auto;
  display: block;
}

.footer__brand-desc {
  font-size: 0.9rem;
  color: var(--color-mid-grey);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.footer__social {
  display: flex;
  gap: var(--space-md);
}

.footer__social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  transition: background var(--transition-fast);
}

.footer__social-link:hover {
  background: var(--color-accent);
}

.footer__heading {
  font-size: 0.85rem;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-lg);
  color: var(--color-white);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  font-size: 0.9rem;
  color: var(--color-mid-grey);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent);
}

/* Newsletter in footer */
.footer__newsletter-form {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.footer__newsletter-input {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-sm);
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.85rem;
}

.footer__newsletter-input::placeholder {
  color: var(--color-mid-grey);
}

.footer__newsletter-btn {
  padding: var(--space-sm) var(--space-md);
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--border-radius-sm);
  font-weight: var(--font-weight-semibold);
  font-size: 0.85rem;
  transition: background var(--transition-fast);
}

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

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-mid-grey);
}

.footer__bottom-links {
  display: flex;
  gap: var(--space-lg);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

/* ================================
   PAGE BODY OFFSET (for fixed header)
   ================================ */
.page-body {
  padding-top: var(--header-height);
}

/* ================================
   BREADCRUMBS
   ================================ */
.breadcrumbs {
  padding: var(--space-md) 0;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.breadcrumbs a {
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
  color: var(--color-accent);
}

.breadcrumbs__separator {
  margin: 0 var(--space-sm);
}

/* ================================
   VISUALLY HIDDEN (accessibility)
   ================================ */
.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;
}