/* 
 * Global Paslanmaz - Static Website Styles
 * Modern, professional B2B industrial design
 * Color palette: Metallic silver, chrome, stainless steel tones
 * Custom font: Computer Modern Unicode Sans Serif
 */

/* ========================================
   CUSTOM FONT
   ======================================== */
@font-face {
  font-family: 'CMU Sans Serif';
  src: url('cmunss.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

/* ========================================
   CSS VARIABLES & RESET
   ======================================== */
:root {
  /* Color Palette - Metallic Silver & Chrome (Matching Logo) */
  --primary-color: #6d7680; /* Metallic gray */
  --primary-dark: #3d4347; /* Dark metallic */
  --primary-light: #8f9aa8; /* Light steel */
  
  --secondary-color: #a8b2bd; /* Chrome silver */
  --secondary-dark: #4a5159; /* Dark chrome */
  --secondary-light: #c8d0d8; /* Light chrome */
  
  --accent-color: #b8c5d4; /* Refined silver blue */
  --accent-bright: #9fb0c3; /* Bright steel accent */
  
  --text-primary: #2a2d31;
  --text-secondary: #5a5f66;
  --text-light: #8a8f96;
  
  --bg-white: #ffffff;
  --bg-light: #f5f7f9;
  --bg-gray: #e8ecf0;
  --bg-steel: #d4dae0; /* Steel background */
  
  --border-color: #d0d5db;
  
  /* Metallic gradients */
  --gradient-chrome: linear-gradient(135deg, #8f9aa8 0%, #6d7680 50%, #3d4347 100%);
  --gradient-silver: linear-gradient(135deg, #c8d0d8 0%, #a8b2bd 50%, #6d7680 100%);
  
  /* Typography */
  --font-primary: 'CMU Sans Serif', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-headings: 'CMU Sans Serif', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;
  
  /* Layout */
  --max-width: 1200px;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

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

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

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

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

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.01em;
}

h1 {
  font-size: 3rem;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 2.5rem;
  letter-spacing: 0;
}

h3 {
  font-size: 2rem;
}

h4 {
  font-size: 1.5rem;
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

.text-large {
  font-size: 1.25rem;
  line-height: 1.7;
}

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

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

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

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

/* ========================================
   HEADER & NAVIGATION
   ======================================== */
.header {
  background-color: var(--bg-white);
  box-shadow: 0 2px 15px rgba(61, 67, 71, 0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid var(--border-color);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: var(--max-width);
  margin: 0 auto;
}

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

.logo img {
  height: 55px;
  width: auto;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-chrome);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.02em;
}

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

.nav-link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: var(--transition);
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 3px;
  background: var(--gradient-chrome);
  border-radius: 2px;
}

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

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--gradient-chrome);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  background: var(--gradient-chrome);
  color: var(--bg-white);
  padding: var(--spacing-xxl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    linear-gradient(45deg, transparent 48%, rgba(255,255,255,0.05) 49%, rgba(255,255,255,0.05) 51%, transparent 52%),
    linear-gradient(-45deg, transparent 48%, rgba(255,255,255,0.05) 49%, rgba(255,255,255,0.05) 51%, transparent 52%);
  background-size: 40px 40px;
  opacity: 0.3;
}

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

.hero h1 {
  color: var(--bg-white);
  margin-bottom: var(--spacing-md);
  font-size: 3.5rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  letter-spacing: 0.01em;
}

.hero p {
  color: rgba(255, 255, 255, 0.95);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-primary);
}

.btn-primary {
  background: var(--gradient-silver);
  color: var(--text-primary);
  border-color: var(--secondary-light);
  box-shadow: 0 4px 15px rgba(109, 118, 128, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(109, 118, 128, 0.3);
  background: var(--gradient-chrome);
  color: var(--bg-white);
}

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

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

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

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

/* ========================================
   CARDS & GRID
   ======================================== */
.grid {
  display: grid;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
  background-color: var(--bg-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: 0 2px 10px rgba(61, 67, 71, 0.08);
  transition: var(--transition);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-chrome);
  opacity: 0;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(61, 67, 71, 0.15);
  border-color: var(--primary-light);
}

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

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-silver);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.card-text {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-size: 0.95rem;
}

.card-icon {
  width: 60px;
  height: 60px;
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

/* ========================================
   FEATURES / WHY US
   ======================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.feature-item {
  text-align: center;
  padding: var(--spacing-md);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-sm);
  background: var(--gradient-chrome);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-white);
  font-size: 2rem;
  box-shadow: 0 4px 15px rgba(109, 118, 128, 0.2);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.feature-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ========================================
   SECTION HEADERS
   ======================================== */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.section-divider {
  width: 80px;
  height: 4px;
  background: var(--gradient-chrome);
  margin: var(--spacing-md) auto;
  border-radius: 2px;
}

/* ========================================
   CONTACT FORM
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.875rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: var(--transition);
  background-color: var(--bg-white);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(109, 118, 128, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
}

.contact-info {
  background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-gray) 100%);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.contact-info-icon {
  width: 24px;
  height: 24px;
  color: var(--primary-color);
  flex-shrink: 0;
}

.contact-info-content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.contact-info-content p {
  margin: 0;
  color: var(--text-secondary);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--gradient-chrome);
  color: var(--bg-white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-silver);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
  color: var(--bg-white);
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
}

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

.footer-logo img {
  height: 45px;
  width: auto;
  filter: brightness(1.1) drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.9);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--bg-white);
  padding-left: 5px;
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--spacing-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.social-link {
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  backdrop-filter: blur(5px);
}

.social-link:hover {
  background-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

/* ========================================
   MAP PLACEHOLDER
   ======================================== */
.map-container {
  width: 100%;
  height: 400px;
  background-color: var(--bg-gray);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--spacing-lg);
  border: 2px dashed var(--border-color);
}

.map-placeholder {
  text-align: center;
  color: var(--text-light);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 768px) {
  /* Typography adjustments */
  h1 {
    font-size: 2.25rem;
  }
  
  h2 {
    font-size: 1.875rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  /* Spacing adjustments */
  .section {
    padding: var(--spacing-lg) 0;
  }
  
  /* Navigation */
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-white);
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-sm);
    box-shadow: 0 10px 20px rgba(61, 67, 71, 0.15);
    display: none;
    border-top: 1px solid var(--border-color);
  }
  
  .nav.active {
    display: flex;
  }
  
  .nav-link {
    width: 100%;
    text-align: left;
    padding: var(--spacing-sm);
  }
  
  .nav-link.active::after {
    display: none;
  }
  
  /* Contact grid */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  /* Grid adjustments */
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  /* Container padding */
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .logo img {
    height: 45px;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-xxl: 3rem;
  }
  
  .btn {
    padding: 0.875rem 1.5rem;
    font-size: 0.9rem;
  }
  
  .hero {
    padding: var(--spacing-lg) 0;
  }
  
  .logo img {
    height: 40px;
  }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.text-center {
  text-align: center;
}

.text-primary {
  color: var(--primary-color);
}

.text-accent {
  color: var(--accent-color);
}

.mb-0 {
  margin-bottom: 0;
}

.mb-1 {
  margin-bottom: var(--spacing-sm);
}

.mb-2 {
  margin-bottom: var(--spacing-md);
}

.mb-3 {
  margin-bottom: var(--spacing-lg);
}

.mt-1 {
  margin-top: var(--spacing-sm);
}

.mt-2 {
  margin-top: var(--spacing-md);
}

.mt-3 {
  margin-top: var(--spacing-lg);
}