/* HighSpeedGears - Main Stylesheet */

/* CSS Variables */
:root {
  --primary-color: #1a5f2a;
  --primary-dark: #134520;
  --secondary-color: #f7941d;
  --accent-color: #2d8a3e;
  --text-dark: #1a1a1a;
  --text-light: #555;
  --text-muted: #777;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --border-color: #e0e0e0;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s ease;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-white);
}

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

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

a:hover {
  color: var(--secondary-color);
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-dark);
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.35rem; }
h5 { font-size: 1.15rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Navigation */
header {
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
}

.logo svg {
  width: 40px;
  height: 40px;
}

.logo span {
  color: var(--secondary-color);
}

nav ul {
  display: flex;
  gap: 30px;
}

nav a {
  color: var(--text-dark);
  font-weight: 500;
  padding: 8px 0;
  position: relative;
}

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

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

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
}

.mobile-menu-btn span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  margin: 5px 0;
  transition: var(--transition);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 80px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M30 30c0-11.046-8.954-20-20-20v20h20z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  color: white;
  margin-bottom: 20px;
  font-size: 3rem;
}

.hero p {
  color: rgba(255,255,255,0.9);
  font-size: 1.25rem;
  margin-bottom: 30px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 50px;
  margin-top: 40px;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--secondary-color);
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.9;
}

/* Page Header */
.page-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 60px 20px;
  text-align: center;
}

.page-header h1 {
  color: white;
  margin-bottom: 15px;
}

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

.breadcrumb {
  margin-bottom: 15px;
  font-size: 0.9rem;
}

.breadcrumb a {
  color: rgba(255,255,255,0.8);
}

.breadcrumb span {
  margin: 0 10px;
  opacity: 0.6;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
}

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

.btn-primary:hover {
  background: #e8850a;
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

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

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

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

.btn-group {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Sections */
section {
  padding: 80px 20px;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  margin-bottom: 15px;
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
}

.bg-light {
  background: var(--bg-light);
}

/* Cards */
.card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 30px;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.card-icon svg {
  width: 30px;
  height: 30px;
  fill: white;
}

.card h3 {
  margin-bottom: 12px;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

/* Product Cards */
.product-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.product-image {
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.product-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  background: var(--secondary-color);
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.product-content {
  padding: 25px;
}

.product-content h3 {
  margin-bottom: 10px;
}

.product-specs {
  margin: 15px 0;
  padding: 15px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
}

.product-specs li {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-color);
  font-size: 0.95rem;
}

.product-specs li:last-child {
  border-bottom: none;
}

.product-specs span:first-child {
  color: var(--text-muted);
}

.product-specs span:last-child {
  font-weight: 600;
  color: var(--text-dark);
}

/* Comparison Table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.comparison-table th,
.comparison-table td {
  padding: 18px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
  background: var(--primary-color);
  color: white;
  font-weight: 600;
}

.comparison-table tr:hover {
  background: var(--bg-light);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.highlight-row {
  background: #fff3e0 !important;
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-white);
  border-radius: var(--radius-sm);
  margin-bottom: 15px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 25px;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--bg-light);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--primary-color);
  transition: var(--transition);
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

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

.faq-answer-inner {
  padding: 0 25px 25px;
  color: var(--text-light);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

/* Steps/Process */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: var(--border-color);
  z-index: 0;
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 80px;
  height: 80px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 auto 20px;
  box-shadow: var(--shadow-md);
}

.step h4 {
  margin-bottom: 10px;
}

/* Benefits List */
.benefits-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.benefit-item {
  display: flex;
  gap: 15px;
  padding: 20px;
  background: var(--bg-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.benefit-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.benefit-icon svg {
  width: 24px;
  height: 24px;
  fill: white;
}

.benefit-content h4 {
  margin-bottom: 5px;
}

.benefit-content p {
  margin: 0;
  font-size: 0.95rem;
}

/* Content Sections */
.content-section {
  padding: 40px 0;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.content-grid.reverse {
  direction: rtl;
}

.content-grid.reverse > * {
  direction: ltr;
}

.content-image {
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
  border-radius: var(--radius-lg);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.content-text h2 {
  margin-bottom: 20px;
}

.content-text ul {
  margin: 20px 0;
}

.content-text li {
  padding: 10px 0;
  padding-left: 30px;
  position: relative;
  color: var(--text-light);
}

.content-text li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* Speed Calculator */
.calculator-box {
  background: var(--bg-white);
  padding: 40px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-dark);
}

.form-group select,
.form-group input {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group select:focus,
.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.result-box {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: white;
  padding: 30px;
  border-radius: var(--radius-md);
  text-align: center;
  margin-top: 30px;
}

.result-box h3 {
  color: white;
  margin-bottom: 10px;
}

.result-number {
  font-size: 3rem;
  font-weight: 800;
}

/* Contact Form */
.contact-form {
  background: var(--bg-white);
  padding: 40px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.contact-form textarea {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  resize: vertical;
  min-height: 150px;
}

.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.contact-info {
  padding: 40px;
}

.contact-info h3 {
  margin-bottom: 25px;
}

.contact-item {
  display: flex;
  gap: 15px;
  margin-bottom: 25px;
}

.contact-item svg {
  width: 24px;
  height: 24px;
  fill: var(--primary-color);
}

.contact-item h4 {
  margin-bottom: 5px;
  font-size: 1rem;
}

.contact-item p {
  margin: 0;
  font-size: 0.95rem;
}

/* Testimonials */
.testimonial-card {
  background: var(--bg-white);
  padding: 30px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  font-size: 4rem;
  color: var(--primary-color);
  opacity: 0.2;
  position: absolute;
  top: 10px;
  left: 20px;
  font-family: Georgia, serif;
}

.testimonial-text {
  font-style: italic;
  margin-bottom: 20px;
  color: var(--text-light);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 15px;
}

.author-avatar {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
}

.author-info h5 {
  margin-bottom: 3px;
}

.author-info span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  text-align: center;
  padding: 80px 20px;
}

.cta-section h2 {
  color: white;
  margin-bottom: 15px;
}

.cta-section p {
  color: rgba(255,255,255,0.9);
  max-width: 600px;
  margin: 0 auto 30px;
}

/* Footer */
footer {
  background: #1a1a1a;
  color: white;
  padding: 60px 20px 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-about .logo {
  margin-bottom: 20px;
}

.footer-about p {
  color: rgba(255,255,255,0.7);
}

.footer-links h4 {
  color: white;
  margin-bottom: 20px;
}

.footer-links a {
  display: block;
  color: rgba(255,255,255,0.7);
  padding: 8px 0;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-bottom p {
  color: rgba(255,255,255,0.5);
  margin: 0;
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-links a {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--secondary-color);
}

.social-links svg {
  width: 20px;
  height: 20px;
  fill: white;
}

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

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

  .steps::before {
    display: none;
  }

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

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.35rem; }

  .hero h1 {
    font-size: 2.25rem;
  }

  nav ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 20px;
    gap: 0;
    box-shadow: var(--shadow-md);
  }

  nav ul.active {
    display: flex;
  }

  nav li {
    border-bottom: 1px solid var(--border-color);
  }

  nav a {
    display: block;
    padding: 15px 0;
  }

  .mobile-menu-btn {
    display: block;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

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

  .content-grid.reverse {
    direction: ltr;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

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

  .benefits-list {
    grid-template-columns: 1fr;
  }

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

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

  .comparison-table {
    display: block;
    overflow-x: auto;
  }
}

@media (max-width: 480px) {
  section {
    padding: 50px 15px;
  }

  .btn {
    width: 100%;
  }

  .btn-group {
    flex-direction: column;
  }

  .calculator-box,
  .contact-form {
    padding: 25px;
  }
}