/*
Theme Name: ValvePro Industrial
Theme URI: https://www.valvepro.com
Author: ValvePro Team
Author URI: https://www.valvepro.com
Description: Professional WordPress theme for industrial valve manufacturer and exporter. Includes product catalog, inquiry system, and quote request functionality.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: valvepro
Tags: industrial, b2b, valve, export, custom-post-type, responsive
Requires PHP: 7.4
Requires at least: 5.0
*/

/* ============================================
   IMPORT EXTERNAL STYLESHEET
   ============================================ */
@import url('css/responsive.css');

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
  /* Colors */
  --color-primary: #1e5a8d;
  --color-primary-light: #3a7bc8;
  --color-primary-dark: #154170;
  --color-secondary: #6c757d;
  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-danger: #dc3545;
  --color-info: #17a2b8;
  --color-light: #f8f9fa;
  --color-dark: #343a40;
  --color-white: #ffffff;
  --color-black: #000000;
  --color-gray: #dee2e6;
  --color-medium-gray: #6c757d;
  --color-light-gray: #f5f6f7;
  --color-accent: #e8f4fc;
  
  /* Typography */
  --font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-base: 16px;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-tooltip: 600;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

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

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

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

a:hover {
  color: var(--color-primary-light);
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
}

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

p {
  margin-bottom: var(--spacing-md);
}

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

.text-sm { font-size: var(--text-sm); }
.text-lg { font-size: var(--text-lg); }

/* ============================================
   LAYOUT
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section-gray {
  background: var(--color-light-gray);
}

.section-accent {
  background: var(--color-accent);
}

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

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-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); }

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

/* Spacing Utilities */
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.p-3 { padding: var(--spacing-lg); }

/* Background */
.bg-light { background: var(--color-light-gray); }
.bg-white { background: var(--color-white); }

/* Rounded */
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }

/* ============================================
   COMPONENTS
   ============================================ */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
}

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

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

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

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

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--text-lg);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--text-sm);
}

.btn-block {
  width: 100%;
}

.btn-success {
  background: var(--color-success);
  color: var(--color-white);
}

/* Cards */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  overflow: hidden;
}

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

.card-image {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-light-gray);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-title {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--color-medium-gray);
  font-size: var(--text-sm);
}

/* Product Card Specific */
.product-card {
  position: relative;
}

.product-badge {
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.product-price {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.product-price-unit {
  font-size: var(--text-sm);
  color: var(--color-medium-gray);
}

/* Badge */
.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-primary {
  background: var(--color-accent);
  color: var(--color-primary);
}

.badge-secondary {
  background: var(--color-light-gray);
  color: var(--color-medium-gray);
}

.badge-success {
  background: #d4edda;
  color: var(--color-success);
}

/* Tags */
.tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-light-gray);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  margin: var(--spacing-xs);
}

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--color-dark);
}

.form-label.required::after {
  content: ' *';
  color: var(--color-danger);
}

.form-control {
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--text-base);
  border: 2px solid var(--color-gray);
  border-radius: var(--radius-md);
  background: var(--color-white);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 90, 141, 0.1);
}

.form-control::placeholder {
  color: var(--color-medium-gray);
}

.form-row {
  margin-bottom: var(--spacing-lg);
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

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

/* ============================================
   HEADER
   ============================================ */
.header {
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.header-top {
  background: var(--color-light-gray);
  padding: var(--spacing-sm) 0;
  font-size: var(--text-sm);
  color: var(--color-medium-gray);
}

.header-main {
  padding: var(--spacing-md) 0;
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--text-xl);
}

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

.logo-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  font-weight: 700;
}

.logo-text {
  font-size: var(--text-xl);
  font-weight: 700;
}

.logo-tagline {
  font-size: var(--text-xs);
  color: var(--color-medium-gray);
  font-weight: 400;
}

/* Navigation */
.nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-link {
  font-weight: 500;
  color: var(--color-dark);
  padding: var(--spacing-sm) 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

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

/* Search Box */
.search-box {
  display: flex;
  align-items: center;
  background: var(--color-light-gray);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.search-input {
  border: none;
  background: transparent;
  padding: var(--spacing-sm) var(--spacing-md);
  width: 200px;
}

.search-input:focus {
  outline: none;
}

.search-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  color: var(--color-medium-gray);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.hero h1 {
  font-size: var(--text-5xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.hero p {
  font-size: var(--text-xl);
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

/* ============================================
   PAGE HEADER
   ============================================ */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.page-title {
  font-size: var(--text-4xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.page-subtitle {
  font-size: var(--text-lg);
  opacity: 0.9;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) 0;
  font-size: var(--text-sm);
}

.breadcrumb a {
  color: var(--color-medium-gray);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb-separator {
  color: var(--color-gray);
}

/* ============================================
   CATEGORY NAV
   ============================================ */
.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: var(--color-light-gray);
  border-radius: var(--radius-lg);
}

.category-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--color-white);
  border: 2px solid var(--color-gray);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
}

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

.category-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* ============================================
   INQUIRY CART SYSTEM
   ============================================ */
.inquiry-cart {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  z-index: var(--z-fixed);
}

.inquiry-cart-btn {
  width: 60px;
  height: 60px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-fast);
}

.inquiry-cart-btn:hover {
  transform: scale(1.1);
  background: var(--color-primary-light);
}

.inquiry-cart-count {
  position: absolute;
  top: -5px;
  right: -5px;
  width: 24px;
  height: 24px;
  background: var(--color-danger);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Inquiry Panel */
.inquiry-panel {
  position: fixed;
  top: 0;
  right: -400px;
  width: 400px;
  max-width: 100vw;
  height: 100vh;
  background: var(--color-white);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  transition: right var(--transition-normal);
}

.inquiry-panel.active {
  right: 0;
}

.inquiry-panel-header {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.inquiry-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg);
}

.inquiry-panel-footer {
  padding: var(--spacing-lg);
  background: var(--color-light-gray);
  border-top: 1px solid var(--color-gray);
}

.inquiry-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-light-gray);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
}

.inquiry-item-remove {
  margin-left: auto;
  color: var(--color-danger);
  cursor: pointer;
}

/* Overlay */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-dark);
  color: var(--color-light-gray);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-title {
  color: var(--color-white);
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-light-gray);
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-contact {
  font-size: var(--text-sm);
  line-height: 1.8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
}

.footer-bottom a {
  color: var(--color-light-gray);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.animate-fadeIn {
  animation: fadeIn 0.5s ease;
}

.animate-slideUp {
  animation: slideUp 0.5s ease;
}

/* Loading Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-gray);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-3xl);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
}