/*
Theme Name: CivilMate Pro
Theme URI: https://civilmate.com
Author: CivilMate
Author URI: https://civilmate.com
Description: Professional Civil Engineering Calculator WordPress Theme with built-in calculators, SEO optimization, AdSense placements, and modern design. Includes Brick, Concrete, Steel, Plaster, and Tile calculators with full formula explanations.
Version: 1.0.0
Requires at least: 5.8
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: civilmate
Tags: engineering, calculators, construction, responsive, seo-friendly, adsense-ready
*/

/* =====================================================
   CIVILMATE PRO THEME - MAIN STYLESHEET
   Civil Engineering Calculator Website
   ===================================================== */

/* ---- CSS VARIABLES ---- */
:root {
  --primary:       #1B4FA8;
  --primary-dark:  #0F3278;
  --primary-light: #EBF2FF;
  --accent:        #E8561A;
  --accent-dark:   #C04410;
  --accent-light:  #FEF0EA;
  --green:         #1A7A45;
  --green-light:   #E8F5EE;
  --gray-900:      #1A1A18;
  --gray-800:      #2C2C2A;
  --gray-700:      #444440;
  --gray-600:      #5C5C58;
  --gray-500:      #74746E;
  --gray-400:      #9C9C96;
  --gray-300:      #C4C4BC;
  --gray-200:      #E0E0D8;
  --gray-100:      #F2F2EC;
  --gray-50:       #F8F8F4;
  --white:         #FFFFFF;
  --border:        #E2E2DA;
  --shadow-sm:     0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:     0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:     0 8px 32px rgba(0,0,0,0.12);
  --radius-sm:     6px;
  --radius-md:     10px;
  --radius-lg:     16px;
  --radius-xl:     24px;
  --font-sans:     'Inter', 'Segoe UI', -apple-system, sans-serif;
  --font-heading:  'Montserrat', 'Segoe UI', sans-serif;
  --font-mono:     'Courier New', monospace;
  --transition:    all 0.22s ease;
  --max-width:     1200px;
  --container-pad: 0 24px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
ul, ol { padding-left: 1.5rem; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--gray-900);
}
h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p { margin-bottom: 1rem; color: var(--gray-700); }
p:last-child { margin-bottom: 0; }

/* ---- UTILITIES ---- */
.container { max-width: var(--max-width); margin: 0 auto; padding: var(--container-pad); }
.text-center { text-align: center; }
.text-accent { color: var(--accent); }
.text-primary { color: var(--primary); }
.bg-light { background: var(--gray-50); }
.bg-primary { background: var(--primary); }
.hidden { display: none !important; }

/* =====================================================
   HEADER & NAVIGATION
   ===================================================== */

.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 68px;
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-icon svg { width: 22px; height: 22px; fill: white; }

.logo-text .logo-name {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1;
  letter-spacing: -0.3px;
}

.logo-text .logo-tagline {
  font-size: 10px;
  color: var(--gray-500);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  line-height: 1;
  margin-top: 2px;
}

/* Navigation */
.site-nav { display: flex; align-items: center; gap: 4px; }

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

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

.nav-link .arrow {
  font-size: 10px;
  transition: transform 0.2s;
}

.nav-item:hover .arrow { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
  z-index: 100;
}

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

.dropdown-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  font-size: 13px;
  color: var(--gray-700);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.dropdown-link:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.dropdown-link .dd-icon {
  width: 28px;
  height: 28px;
  background: var(--gray-100);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

/* Header CTA */
.header-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-700);
  border-radius: 2px;
  transition: var(--transition);
}

/* =====================================================
   BUTTONS
   ===================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(27,79,168,0.3);
}

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

.btn-accent:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(232,86,26,0.3);
}

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

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

.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  color: var(--white);
  border-color: white;
}

.btn-lg { padding: 14px 28px; font-size: 15px; border-radius: var(--radius-md); }
.btn-sm { padding: 7px 14px; font-size: 13px; }

/* =====================================================
   HERO SECTION
   ===================================================== */

.hero-section {
  background: linear-gradient(135deg, #0A1628 0%, #112256 50%, #1B3A6B 100%);
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(27,79,168,0.3) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(232,86,26,0.15) 0%, transparent 50%);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--container-pad);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(232,86,26,0.2);
  color: #F0A070;
  border: 1px solid rgba(232,86,26,0.35);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title .highlight {
  color: #F0A070;
  position: relative;
}

.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.72);
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  gap: 28px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.12);
}

.hero-stat-num {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 800;
  color: var(--white);
}

.hero-stat-label {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

/* Hero visual - calc preview */
.hero-visual {
  position: relative;
}

.hero-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(10px);
}

.hero-card-title {
  color: rgba(255,255,255,0.9);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-calc-row {
  margin-bottom: 14px;
}

.hero-calc-label {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 5px;
}

.hero-calc-input {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: white;
  font-size: 14px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero-calc-result {
  background: linear-gradient(135deg, rgba(27,79,168,0.4), rgba(27,79,168,0.2));
  border: 1px solid rgba(27,79,168,0.5);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 16px;
}

.hero-result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.hero-result-item .r-val {
  font-size: 20px;
  font-weight: 700;
  color: #7EB8FF;
}

.hero-result-item .r-lbl {
  font-size: 11px;
  color: rgba(255,255,255,0.45);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* =====================================================
   SECTION COMMON STYLES
   ===================================================== */

.section { padding: 72px 0; }
.section-sm { padding: 48px 0; }
.section-lg { padding: 96px 0; }

.section-header {
  text-align: center;
  margin-bottom: 52px;
}

.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}

.section-desc {
  font-size: 16px;
  color: var(--gray-500);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.8;
}

/* =====================================================
   CALCULATOR CARDS GRID
   ===================================================== */

.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.calc-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  display: block;
}

.calc-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.calc-card:hover::before { transform: scaleX(1); }

.calc-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.calc-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  transition: var(--transition);
}

.calc-card:hover .calc-icon { transform: scale(1.1); }

.calc-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.calc-card p {
  font-size: 13px;
  color: var(--gray-500);
  margin: 0;
  line-height: 1.5;
}

.calc-card .calc-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  margin-top: 14px;
}

/* =====================================================
   CALCULATOR TOOL (the actual calculator UI)
   ===================================================== */

.calc-tool-wrapper {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin: 32px 0;
}

.calc-tool-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 24px 28px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.calc-tool-header .calc-icon-lg {
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.calc-tool-header h2 {
  color: white;
  font-size: 20px;
  margin-bottom: 3px;
}

.calc-tool-header p {
  color: rgba(255,255,255,0.7);
  font-size: 13px;
  margin: 0;
}

.calc-tool-body {
  padding: 28px;
}

/* Calculator Tabs */
.calc-tabs {
  display: flex;
  gap: 8px;
  background: var(--gray-100);
  padding: 6px;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.calc-tab {
  flex: 1;
  min-width: 100px;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-600);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.calc-tab.active {
  background: var(--white);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.calc-tab-panel { display: none; }
.calc-tab-panel.active { display: block; }

/* Form fields */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
}

.form-group .form-hint {
  font-size: 11px;
  color: var(--gray-400);
  margin-top: -2px;
}

.form-control {
  width: 100%;
  padding: 11px 14px;
  font-size: 14px;
  font-family: var(--font-sans);
  color: var(--gray-900);
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(27,79,168,0.1);
}

.form-control::-webkit-inner-spin-button { opacity: 0.5; }

select.form-control { cursor: pointer; }

/* Calculate button */
.calc-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 8px;
}

.calc-btn:hover {
  background: linear-gradient(135deg, var(--primary-dark), #0A2558);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(27,79,168,0.35);
}

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

/* Results */
.calc-results {
  margin-top: 24px;
  display: none;
}

.calc-results.show { display: block; }

.results-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.results-header h4 {
  font-size: 15px;
  color: var(--gray-900);
}

.results-badge {
  background: var(--green-light);
  color: var(--green);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.result-item {
  background: var(--primary-light);
  border: 1px solid rgba(27,79,168,0.12);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}

.result-value {
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 4px;
}

.result-unit {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  opacity: 0.7;
}

.result-label {
  font-size: 12px;
  color: var(--gray-600);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.result-item.accent {
  background: var(--accent-light);
  border-color: rgba(232,86,26,0.15);
}

.result-item.accent .result-value,
.result-item.accent .result-unit { color: var(--accent-dark); }

/* Formula note */
.formula-note {
  background: var(--gray-50);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 13px;
  color: var(--gray-600);
  font-family: var(--font-mono);
  margin-top: 12px;
  line-height: 1.6;
}

/* Download PDF button */
.calc-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

/* =====================================================
   FORMULA SECTION
   ===================================================== */

.formula-section {
  background: var(--gray-900);
  color: white;
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 32px 0;
  position: relative;
  overflow: hidden;
}

.formula-section::before {
  content: '';
  position: absolute;
  top: -30px; right: -30px;
  width: 120px; height: 120px;
  background: rgba(27,79,168,0.2);
  border-radius: 50%;
}

.formula-tag {
  background: rgba(232,86,26,0.2);
  color: #F0A070;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
  display: inline-block;
}

.formula-section h3 { color: white; font-size: 18px; margin-bottom: 16px; }

.formula-display {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: #7EB8FF;
  margin-bottom: 16px;
  letter-spacing: 0.3px;
}

.formula-vars { display: flex; flex-direction: column; gap: 6px; }

.formula-var {
  display: flex;
  gap: 12px;
  font-size: 13px;
}

.var-key {
  color: #F0A070;
  font-family: var(--font-mono);
  font-weight: 600;
  min-width: 24px;
}

.var-desc { color: rgba(255,255,255,0.65); }

/* =====================================================
   FAQ SECTION
   ===================================================== */

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover { border-color: var(--primary); }

.faq-question {
  width: 100%;
  padding: 18px 20px;
  background: var(--white);
  border: none;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-900);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

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

.faq-icon {
  width: 22px;
  height: 22px;
  background: var(--gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  transition: var(--transition);
  color: var(--primary);
  font-weight: 700;
}

.faq-item.open .faq-icon { background: var(--primary); color: white; transform: rotate(45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer { max-height: 400px; }

.faq-answer-inner {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.75;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* =====================================================
   SERVICES SECTION
   ===================================================== */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
}

.service-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.service-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 18px;
}

.service-card h3 { font-size: 17px; margin-bottom: 10px; }
.service-card p { font-size: 14px; color: var(--gray-500); margin-bottom: 16px; }

.service-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.service-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-700);
}

.service-list li::before {
  content: '✓';
  width: 18px;
  height: 18px;
  background: var(--green-light);
  color: var(--green);
  font-size: 11px;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* =====================================================
   PRICING SECTION
   ===================================================== */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  transition: var(--transition);
}

.pricing-card.featured {
  border-color: var(--primary);
  border-width: 2px;
  box-shadow: var(--shadow-md);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: white;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 16px;
  border-radius: 20px;
  white-space: nowrap;
}

.pricing-name {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-500);
  margin-bottom: 8px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 20px;
}

.price-amount {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: 800;
  color: var(--gray-900);
}

.price-period { font-size: 14px; color: var(--gray-500); }

.pricing-desc {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.pricing-features {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-700);
}

.feat-check {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.feat-check.yes { background: var(--green-light); color: var(--green); }
.feat-check.no { background: var(--gray-100); color: var(--gray-400); }

/* =====================================================
   FEATURES / WHY CHOOSE US
   ===================================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.feature-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.feature-item:hover { box-shadow: var(--shadow-sm); border-color: var(--primary); }

.feature-icon-wrap {
  width: 44px;
  height: 44px;
  background: var(--primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.feature-item h4 { font-size: 14px; margin-bottom: 5px; }
.feature-item p { font-size: 13px; color: var(--gray-500); margin: 0; line-height: 1.5; }

/* =====================================================
   CTA BANNER
   ===================================================== */

.cta-banner {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 200px; height: 200px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
}

.cta-banner h2 { color: white; font-size: 2rem; margin-bottom: 14px; position: relative; }
.cta-banner p { color: rgba(255,255,255,0.75); font-size: 16px; margin-bottom: 28px; position: relative; }

.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; position: relative; }

/* =====================================================
   ADSENSE ZONES
   ===================================================== */

.ad-zone {
  background: var(--gray-50);
  border: 1px dashed var(--gray-300);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  color: var(--gray-400);
  font-size: 12px;
  margin: 24px 0;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-zone-leaderboard { min-height: 90px; }
.ad-zone-rectangle { min-height: 250px; max-width: 336px; margin: 24px auto; }
.ad-zone-sidebar { min-height: 600px; }

/* =====================================================
   REFERENCE TABLE
   ===================================================== */

.ref-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 20px 0;
}

.ref-table th {
  background: var(--gray-900);
  color: white;
  padding: 12px 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ref-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--gray-700);
}

.ref-table tr:last-child td { border-bottom: none; }
.ref-table tr:hover td { background: var(--gray-50); }
.ref-table td:first-child { font-weight: 600; color: var(--gray-900); }

/* =====================================================
   SIDEBAR
   ===================================================== */

.page-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}

.sidebar { position: sticky; top: 90px; }

.sidebar-widget {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.sidebar-widget h4 {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--gray-600);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.sidebar-calc-links { list-style: none; padding: 0; }

.sidebar-calc-links li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--gray-700);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.sidebar-calc-links li:last-child a { border-bottom: none; }
.sidebar-calc-links li a:hover { color: var(--primary); padding-left: 4px; }

/* =====================================================
   BREADCRUMB
   ===================================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-500);
  padding: 16px 0;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--gray-500); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--gray-300); }
.breadcrumb .current { color: var(--gray-900); font-weight: 500; }

/* =====================================================
   FOOTER
   ===================================================== */

.site-footer {
  background: var(--gray-900);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 0;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo-name { color: white; font-size: 22px; }
.footer-brand .logo-tagline { color: rgba(255,255,255,0.4); }

.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  line-height: 1.75;
  margin: 16px 0 20px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.social-link {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition);
  color: white;
  text-decoration: none;
}

.social-link:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

.footer-col h5 {
  color: white;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links li a {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}

.footer-links li a:hover { color: white; padding-left: 4px; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
  gap: 10px;
}

.footer-bottom a { color: rgba(255,255,255,0.4); }
.footer-bottom a:hover { color: rgba(255,255,255,0.8); }

/* =====================================================
   UNIT CONVERTER
   ===================================================== */

.converter-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: end;
}

.converter-arrow {
  font-size: 22px;
  color: var(--primary);
  text-align: center;
  padding-bottom: 11px;
  cursor: pointer;
}

/* =====================================================
   NOTIFICATIONS / ALERTS
   ===================================================== */

.alert {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 14px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.alert-info { background: var(--primary-light); color: var(--primary); border: 1px solid rgba(27,79,168,0.2); }
.alert-warning { background: #FEF7E8; color: #7A5A0A; border: 1px solid #F0C840; }
.alert-success { background: var(--green-light); color: var(--green); border: 1px solid rgba(26,122,69,0.2); }

/* =====================================================
   RESPONSIVE - TABLET
   ===================================================== */

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero-grid { gap: 40px; }
  .page-with-sidebar { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}

/* =====================================================
   RESPONSIVE - MOBILE
   ===================================================== */

@media (max-width: 768px) {
  :root { --container-pad: 0 16px; }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-visual { order: -1; }

  .hero-title { font-size: 2rem; }

  .hero-stats { gap: 18px; flex-wrap: wrap; }

  .site-nav, .header-cta { display: none; }

  .mobile-toggle { display: flex; }

  .site-nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: white;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    gap: 4px;
    z-index: 999;
  }

  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 1px solid var(--border);
    margin-top: 4px;
    display: none;
  }

  .nav-item:hover .nav-dropdown { display: block; }

  .form-grid { grid-template-columns: 1fr; }

  .calc-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }

  .cta-banner { padding: 36px 24px; }

  .hero-actions { flex-direction: column; }

  .converter-grid { grid-template-columns: 1fr; }
  .converter-arrow { transform: rotate(90deg); padding: 0; }

  .pricing-grid { grid-template-columns: 1fr; }

  .services-grid { grid-template-columns: 1fr; }

  .results-grid { grid-template-columns: 1fr 1fr; }

  .page-with-sidebar { grid-template-columns: 1fr; }

  .section { padding: 48px 0; }
  .section-lg { padding: 60px 0; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.75rem; }
  .calc-grid { grid-template-columns: 1fr 1fr; }
  .results-grid { grid-template-columns: 1fr; }
  .ref-table { font-size: 12px; }
  .ref-table th, .ref-table td { padding: 8px 10px; }
}

/* =====================================================
   PRINT STYLES
   ===================================================== */

@media print {
  .site-header, .site-footer, .ad-zone, .calc-btn, .sidebar { display: none; }
  .page-with-sidebar { grid-template-columns: 1fr; }
  .calc-results { display: block !important; }
}

/* =====================================================
   ANIMATIONS
   ===================================================== */

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

@keyframes countUp {
  from { opacity: 0; transform: scale(0.8); }
  to   { opacity: 1; transform: scale(1); }
}

.animate-in { animation: fadeInUp 0.5s ease forwards; }
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }

.result-value.animate { animation: countUp 0.4s ease; }

/* =====================================================
   LOADING SPINNER
   ===================================================== */

.spinner {
  width: 20px; height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
}

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