/* =====================================================
   QUALPOL - Main Stylesheet
   Modern, Clean Industrial Design
   ===================================================== */

/* ----- CSS Custom Properties (Design Tokens) ----- */
:root {
  /* Primary Colors - Rich Industrial Blue */
  --color-primary: #1e4976;
  --color-primary-dark: #0d2840;
  --color-primary-light: #3a6ea5;
  --color-primary-lighter: #5a8fc7;

  /* Secondary - Warm Orange Accent */
  --color-secondary: #d95d39;
  --color-secondary-dark: #b94a2c;
  --color-secondary-light: #e8805f;

  /* Neutrals - Warmer tones */
  --color-white: #ffffff;
  --color-gray-50: #fafaf9;
  --color-gray-100: #f5f5f4;
  --color-gray-200: #e7e5e4;
  --color-gray-300: #d6d3d1;
  --color-gray-400: #a8a29e;
  --color-gray-500: #78716c;
  --color-gray-600: #57534e;
  --color-gray-700: #44403c;
  --color-gray-800: #292524;
  --color-gray-900: #1c1917;

  /* Semantic Colors */
  --color-success: #059669;
  --color-warning: #d97706;
  --color-error: #dc2626;
  --color-info: #2563eb;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Plus Jakarta Sans', var(--font-primary);

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 900px;

  /* Borders & Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows - softer, more natural */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.04), 0 1px 3px 0 rgb(0 0 0 / 0.06);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.04);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.03);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.15);
  --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
  --shadow-glow: 0 0 20px rgb(30 73 118 / 0.15);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Header height for scroll offset */
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-700);
  background-color: var(--color-gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle selection styling */
::selection {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Smooth page transitions */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

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

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

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

/* Focus states for accessibility */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

ul, ol {
  list-style: none;
}

/* ----- Typography ----- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--space-4);
}

p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: var(--font-size-xl);
  color: var(--color-gray-600);
  line-height: var(--line-height-relaxed);
}

/* ----- Layout Utilities ----- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

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

.section {
  padding: var(--space-20) 0;
}

.section-sm {
  padding: var(--space-12) 0;
}

.section-lg {
  padding: var(--space-24) 0;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-6);
}

.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: 640px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

/* Flexbox Utilities */
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Text Alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 2px 4px rgb(30 73 118 / 0.2);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: 0 4px 12px rgb(30 73 118 / 0.3);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 1px 2px rgb(30 73 118 / 0.2);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-white);
  box-shadow: 0 2px 4px rgb(217 93 57 / 0.2);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  box-shadow: 0 4px 12px rgb(217 93 57 / 0.3);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgb(30 73 118 / 0.2);
}

.btn-outline-white {
  background-color: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}

.btn-outline-white:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

/* ----- Header & Navigation ----- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-normal);
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.logo img {
  height: 45px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  padding: var(--space-2) var(--space-4);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:not(.nav-dropdown-toggle)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: all var(--transition-fast);
  transform: translateX(-50%);
}

.nav-link:not(.nav-dropdown-toggle):hover::after,
.nav-link:not(.nav-dropdown-toggle).active::after {
  width: calc(100% - var(--space-8));
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-gray-100);
}

.nav-cta {
  margin-left: var(--space-2);
  padding: var(--space-2) var(--space-5) !important;
  font-size: var(--font-size-sm);
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-dropdown-toggle::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover .nav-dropdown-toggle::after {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  padding: var(--space-2);
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
}

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

.nav-dropdown-item {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--color-gray-700);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-dropdown-item:hover {
  color: var(--color-primary);
  background-color: var(--color-gray-100);
}

/* Mobile Navigation */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-gray-700);
  transition: all var(--transition-fast);
}

@media (max-width: 1024px) {
  .mobile-menu-toggle {
    display: flex;
    z-index: 1002;
  }

  /* Full-screen mobile menu overlay */
  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-8);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    overflow-y: auto;
    z-index: 1001;
  }

  .nav-menu.open {
    opacity: 1;
    visibility: visible;
  }

  .nav-menu > li {
    width: 100%;
    max-width: 320px;
    text-align: center;
    transform: translateY(20px);
    opacity: 0;
    transition: all var(--transition-normal);
  }

  .nav-menu.open > li {
    transform: translateY(0);
    opacity: 1;
  }

  /* Stagger animation for menu items */
  .nav-menu.open > li:nth-child(1) { transition-delay: 0.05s; }
  .nav-menu.open > li:nth-child(2) { transition-delay: 0.1s; }
  .nav-menu.open > li:nth-child(3) { transition-delay: 0.15s; }
  .nav-menu.open > li:nth-child(4) { transition-delay: 0.2s; }
  .nav-menu.open > li:nth-child(5) { transition-delay: 0.25s; }
  .nav-menu.open > li:nth-child(6) { transition-delay: 0.3s; }
  .nav-menu.open > li:nth-child(7) { transition-delay: 0.35s; }

  .nav-link {
    display: block;
    width: 100%;
    padding: var(--space-4) var(--space-6);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white) !important;
    text-decoration: none !important;
    transition: all var(--transition-fast);
  }

  .nav-link::after,
  .nav-link:hover::after,
  .nav-link.active::after,
  .nav-link:not(.nav-dropdown-toggle)::after,
  .nav-link:not(.nav-dropdown-toggle):hover::after,
  .nav-link:not(.nav-dropdown-toggle).active::after {
    display: none !important;
    width: 0 !important;
    height: 0 !important;
    content: none !important;
  }

  .nav-link:focus-visible {
    outline: none;
    background-color: rgba(255, 255, 255, 0.15);
  }

  .nav-link:hover,
  .nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-white) !important;
  }

  .nav-dropdown {
    width: 100%;
  }

  .nav-dropdown-toggle::after {
    margin-left: var(--space-2);
    border-top-color: var(--color-white);
  }

  .nav-dropdown-menu {
    position: static;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding: var(--space-2) 0;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    margin-top: var(--space-2);
    display: none;
  }

  .nav-dropdown.open .nav-dropdown-menu {
    display: block;
  }

  .nav-dropdown-item {
    display: block;
    padding: var(--space-3) var(--space-4);
    color: rgba(255, 255, 255, 0.9) !important;
    font-size: var(--font-size-lg);
    border: none;
    border-radius: var(--radius-md);
    text-decoration: none !important;
    transition: all var(--transition-fast);
  }

  .nav-dropdown-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-white) !important;
  }

  .nav-dropdown-item:focus-visible {
    outline: none;
    background-color: rgba(255, 255, 255, 0.15);
  }

  .nav-cta {
    margin: var(--space-6) 0 0 0;
    padding: var(--space-4) var(--space-8) !important;
    font-size: var(--font-size-lg) !important;
    background-color: var(--color-white) !important;
    color: var(--color-primary) !important;
    border: none !important;
  }

  .nav-cta:hover {
    background-color: var(--color-gray-100) !important;
    color: var(--color-primary-dark) !important;
  }

  /* Hamburger to X animation */
  .mobile-menu-toggle span {
    background-color: var(--color-gray-700);
    transition: all var(--transition-fast);
  }

  .mobile-menu-toggle.open span {
    background-color: var(--color-white);
  }

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

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

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

/* Main content offset for fixed header */
main {
  padding-top: var(--header-height);
}

/* ----- Hero Section ----- */
.hero {
  position: relative;
  min-height: 700px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: 100% auto;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.70;
}

.hero-content {
  position: relative;
  max-width: 700px;
}

.hero-title {
  font-size: var(--font-size-6xl);
  color: var(--color-white);
  margin-bottom: var(--space-6);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  opacity: 0.9;
  margin-bottom: var(--space-8);
  line-height: var(--line-height-relaxed);
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* Seasonal Banner */
.seasonal-banner {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-5);
  margin-bottom: var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.5px;
  animation: fadeIn 0.6s ease-out;
}

.seasonal-icon {
  font-size: var(--font-size-lg);
  animation: pulse 2s ease-in-out infinite;
}

.seasonal-text {
  color: var(--color-white);
}

@media (max-width: 768px) {
  .hero-logo {
    display: none !important;
  }

  .hero {
    min-height: auto;
    padding: var(--space-12) 0;
  }

  .hero .container {
    margin-top: 0 !important;
  }

  .hero-bg {
    background-size: cover;
    background-position: center bottom;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 250px;
  }

  .seasonal-banner {
    font-size: var(--font-size-xs);
    padding: var(--space-2) var(--space-4);
  }

  .seasonal-icon {
    font-size: var(--font-size-base);
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--space-8) 0;
  }

  .hero-title {
    font-size: var(--font-size-2xl);
  }
}

/* ----- Page Header ----- */
.page-header {
  padding: var(--space-16) 0 var(--space-12);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
}

.page-header h1 {
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.page-header .lead {
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb-separator {
  margin: 0 var(--space-1);
}

/* ----- Cards ----- */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid var(--color-gray-100);
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: 10;
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
  border-color: var(--color-gray-200);
}

.card:hover::before {
  opacity: 1;
}

.card-image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-50) 100%);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  transition: transform var(--transition-slow);
}

.card:hover .card-image img {
  transform: scale(1.08);
}

.card-body {
  padding: var(--space-6);
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
  transition: color var(--transition-fast);
}

.card:hover .card-title {
  color: var(--color-primary);
}

.card-text {
  color: var(--color-gray-600);
  margin-bottom: var(--space-4);
}

/* Product Card */
.product-card {
  text-align: center;
}

.product-card .card-image {
  background-color: var(--color-gray-100);
  aspect-ratio: 1;
}

.product-card .card-body {
  padding: var(--space-5);
}

.product-card .card-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

/* ----- Feature Section ----- */
.features {
  background-color: var(--color-gray-50);
}

.feature-item {
  text-align: center;
  padding: var(--space-8);
  transition: transform var(--transition-normal);
}

.feature-item:hover {
  transform: translateY(-4px);
}

.feature-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-5);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 14px rgb(30 73 118 / 0.25);
  transition: all var(--transition-normal);
}

.feature-item:hover .feature-icon {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgb(30 73 118 / 0.35);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
}

.feature-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
  transition: color var(--transition-fast);
}

.feature-item:hover .feature-title {
  color: var(--color-primary);
}

.feature-text {
  color: var(--color-gray-600);
}

/* ----- Tables ----- */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-200);
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-white);
}

thead {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
}

th, td {
  padding: var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-gray-200);
}

th {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
}

th:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 25%;
  height: 50%;
  width: 1px;
  background-color: rgba(255, 255, 255, 0.2);
}

tbody tr {
  transition: background-color var(--transition-fast);
}

tbody tr:nth-child(even) {
  background-color: var(--color-gray-50);
}

tbody tr:hover {
  background-color: rgba(30, 73, 118, 0.05);
}

tbody tr:last-child td {
  border-bottom: none;
}

td {
  color: var(--color-gray-700);
}

td:first-child {
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-800);
}

/* Specs Table */
.specs-table {
  margin: var(--space-8) 0;
}

.specs-table th {
  background-color: var(--color-primary);
}

.specs-table td {
  font-size: var(--font-size-sm);
}

.specs-table td:first-child {
  font-weight: var(--font-weight-medium);
}

/* Spec Class Headings (SDR/SIDR ratings) */
.spec-class-heading {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
}

/* ----- Tabs ----- */
.tabs {
  margin-bottom: var(--space-8);
}

.tab-list {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  overflow-x: auto;
  overflow-y: visible;
  padding: var(--space-2) var(--space-1);
}

.tab-btn {
  padding: var(--space-3) var(--space-5);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-700);
  background: var(--color-gray-100);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--color-primary);
  background: var(--color-gray-50);
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.tab-btn.active {
  color: var(--color-white);
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* ----- Forms ----- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  transition: all var(--transition-fast);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-gray-400);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(30, 73, 118, 0.1);
  background-color: var(--color-white);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 1.5em;
  padding-right: var(--space-10);
}

.form-status {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  font-weight: var(--font-weight-medium);
}

.form-status.success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.form-status.error {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

/* ----- Line Items (Quote Request) ----- */
.line-item {
  background-color: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
}

.line-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
}

.line-item-number {
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.line-item-remove {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1);
  color: var(--color-gray-400);
  transition: color 0.2s;
  border-radius: var(--radius-sm);
}

.line-item-remove:hover {
  color: var(--color-error);
  background-color: rgba(239, 68, 68, 0.1);
}

.line-item .form-group {
  margin-bottom: 0;
}

/* ----- Part Builder ----- */
.part-builder {
  background-color: var(--color-gray-50);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}

.part-builder-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.part-builder-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.part-number-display {
  background-color: var(--color-white);
  border: 3px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
}

.part-number-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
}

.part-number-value {
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

.part-number-description {
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  margin-top: var(--space-2);
  font-style: italic;
}

.part-number-description:empty {
  display: none;
}

.part-specs {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-top: var(--space-6);
}

.part-specs h3 {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-gray-200);
}

.spec-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-gray-100);
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-label {
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
}

.spec-value {
  color: var(--color-gray-900);
  font-weight: var(--font-weight-semibold);
}

.part-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  margin-top: var(--space-8);
}

/* ----- Footer ----- */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

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

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

.footer-brand .logo-text {
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.footer-brand p {
  margin-bottom: var(--space-6);
  line-height: var(--line-height-relaxed);
}

.footer-heading {
  color: var(--color-white);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-5);
}

.footer-links li {
  margin-bottom: var(--space-3);
}

.footer-links a {
  color: var(--color-gray-400);
  transition: all var(--transition-fast);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--color-white);
  transform: translateX(4px);
}

.footer-contact p {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer-contact svg {
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-gray-800);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-bottom p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* ----- CTA Section ----- */
.cta {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
  color: var(--color-white);
  text-align: center;
}

.cta h2 {
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.cta p {
  font-size: var(--font-size-lg);
  opacity: 0.95;
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta .btn-primary {
  background-color: var(--color-white);
  color: var(--color-secondary);
}

.cta .btn-primary:hover {
  background-color: var(--color-gray-100);
}

/* ----- Utility Classes ----- */
.bg-light { background-color: var(--color-gray-50); }
.bg-white { background-color: var(--color-white); }
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary); }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-muted { color: var(--color-gray-500); }
.text-white { color: var(--color-white); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }

.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;
}

/* ----- Mobile Responsive Enhancements ----- */
@media (max-width: 768px) {
  /* Typography scaling */
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }

  /* Section padding */
  .section {
    padding: var(--space-10) 0;
  }

  /* Page header */
  .page-header {
    padding: var(--space-10) 0 var(--space-8);
  }

  /* Buttons - full width on mobile */
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }

  /* Part builder */
  .part-number-value {
    font-size: var(--font-size-2xl);
    word-break: break-all;
  }

  .part-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .part-actions .btn {
    width: 100%;
  }

  /* Tables - allow horizontal scroll */
  .table-wrapper {
    margin: 0 calc(-1 * var(--space-4));
    padding: 0 var(--space-4);
  }

  table {
    font-size: var(--font-size-sm);
  }

  th, td {
    padding: var(--space-2) var(--space-3);
  }

  /* Feature grid items */
  .feature-item {
    text-align: center;
  }

  /* Cards */
  .card-body {
    padding: var(--space-4);
  }

  /* Forms */
  .form-input,
  .form-select,
  .form-textarea {
    font-size: 16px; /* Prevents iOS zoom on focus */
  }

  /* Footer */
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  /* CTA section */
  .cta h2 {
    font-size: var(--font-size-2xl);
  }
}

@media (max-width: 480px) {
  /* Extra small screens */
  .container {
    padding: 0 var(--space-3);
  }

  .part-builder {
    padding: var(--space-4);
  }

  .part-number-value {
    font-size: var(--font-size-xl);
  }

  /* Stack all grids */
  .grid-2 {
    grid-template-columns: 1fr;
  }

  /* Tab buttons - scrollable */
  .tab-list {
    gap: var(--space-1);
  }

  .tab-btn {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
  }
}

/* Touch-friendly targets */
@media (pointer: coarse) {
  .btn,
  .nav-link,
  .tab-btn,
  .form-select,
  .form-input {
    min-height: 44px; /* Apple's recommended minimum touch target */
  }

  .nav-dropdown-item {
    padding: var(--space-4);
  }
}

/* ----- Print Styles ----- */
.print-header {
  display: none;
}

@media print {
  /* Force colors to print */
  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  body {
    font-size: 10pt;
    line-height: 1.3;
  }

  /* Hide site chrome */
  .header,
  .footer {
    display: none !important;
  }

  /* Hide page header breadcrumb section */
  .page-header {
    display: none !important;
  }

  /* Hide form elements and buttons */
  .part-builder-header,
  .part-builder-grid,
  .part-actions,
  .no-print {
    display: none !important;
  }

  /* Hide help section */
  .part-builder ~ .mt-8 {
    display: none !important;
  }

  /* Hide quick reference and CTA sections - MUST come after show rules */
  section.bg-light,
  section.cta,
  .no-print {
    display: none !important;
    visibility: hidden !important;
  }

  /* Reset spacing and ensure visibility of container chain */
  main {
    display: block !important;
    padding: 0 !important;
    visibility: visible !important;
  }

  /* Only show the FIRST section (part builder), not bg-light or cta */
  main > section.section:not(.bg-light):not(.cta) {
    display: block !important;
    padding: 0 !important;
    visibility: visible !important;
  }

  main > section.section:not(.bg-light):not(.cta) > .container {
    display: block !important;
    max-width: 100%;
    padding: 0 20pt;
    visibility: visible !important;
  }

  .part-builder {
    display: block !important;
    background: none !important;
    padding: 0 !important;
    box-shadow: none !important;
    border: none !important;
    visibility: visible !important;
  }

  /* === SHOW THESE ELEMENTS === */

  /* Logo */
  .print-header {
    display: block !important;
    visibility: visible !important;
    text-align: center;
    padding-bottom: 15pt;
    margin-bottom: 15pt;
    border-bottom: 2pt solid #1e40af;
  }

  .print-header img {
    display: block !important;
    visibility: visible !important;
    height: 50pt;
    width: auto;
    margin: 0 auto;
  }

  /* Part Number Box */
  .part-number-display {
    display: block !important;
    visibility: visible !important;
    background: #f0f0f0 !important;
    border: 2pt solid #1e40af !important;
    padding: 12pt !important;
    margin-bottom: 15pt !important;
    text-align: center;
  }

  .part-number-label {
    display: block !important;
    visibility: visible !important;
    font-size: 10pt;
    text-transform: uppercase;
    letter-spacing: 1pt;
    color: #666;
    margin-bottom: 5pt;
  }

  .part-number-value {
    display: block !important;
    visibility: visible !important;
    font-size: 24pt !important;
    font-weight: 700 !important;
    color: #1e40af !important;
    font-family: 'Courier New', monospace;
  }

  .part-number-description {
    display: block !important;
    visibility: visible !important;
    font-size: 11pt;
    color: #444;
    margin-top: 5pt;
    font-style: italic;
  }

  .part-number-description:empty {
    display: none !important;
  }

  /* Specifications */
  .part-specs {
    display: block !important;
    visibility: visible !important;
  }

  .part-specs h3 {
    display: block !important;
    visibility: visible !important;
    font-size: 12pt;
    font-weight: 700;
    color: #1e40af;
    border-bottom: 1pt solid #ccc;
    padding-bottom: 5pt;
    margin: 0 0 10pt 0;
  }

  #part-specs-content {
    display: block !important;
    visibility: visible !important;
  }

  #part-specs-content * {
    visibility: visible !important;
  }

  .spec-row {
    display: flex !important;
    visibility: visible !important;
    justify-content: space-between;
    padding: 5pt 0;
    border-bottom: 1pt solid #eee;
  }

  .spec-label {
    font-size: 9pt;
    color: #333;
  }

  .spec-value {
    font-size: 9pt;
    font-weight: 600;
    color: #000;
  }

  /* Links */
  a {
    text-decoration: none;
    color: inherit;
  }

  a::after {
    content: none !important;
  }

  /* Page settings */
  @page {
    margin: 0.5in;
    size: letter portrait;
  }

  /* === FINAL HIDE RULES - these MUST be last to override show rules === */
  section.bg-light,
  section.cta,
  section.no-print,
  .tabs,
  .tab-list,
  .tab-panel,
  .table-wrapper,
  h2.text-center.mb-8 {
    display: none !important;
    visibility: hidden !important;
    height: 0 !important;
    overflow: hidden !important;
  }
}