/* 
  Samet Vinç - Design System & Styles
  Author: Antigravity
*/

:root {
  --primary-color: #002d5b; /* Industrial Deep Blue */
  --accent-color: #ffcc00;  /* Construction Yellow */
  --secondary-color: #1a1a1a; /* Dark Slate */
  --text-color: #333333;
  --light-gray: #f4f4f4;
  --white: #ffffff;
  --whatsapp-color: #25d366;
  --phone-color: #3498db;
  --font-main: 'Outfit', sans-serif;
  --transition: all 0.3s ease;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
  background-color: var(--white);
}

/* Fixed Background Silhouette */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('../images/bg-silhouette.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.15; /* Silik görünüm */
  z-index: -1;
  pointer-events: none;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

/* Header & Nav */
header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow);
}

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

.logo img {
  width: 200px;
  height: auto;
  display: block;
  transition: var(--transition);
}

.logo:hover img {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  gap: 30px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--secondary-color);
  font-weight: 600;
  transition: var(--transition);
  font-size: 0.9rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
  border-bottom: 2px solid var(--accent-color);
}

/* Hero Slider Area */
.hero {
  height: 80vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-align: center;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  transition: opacity 1s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 20px;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  background: var(--primary-color);
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
  border-radius: 4px;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn:hover {
  background: var(--accent-color);
  color: var(--secondary-color);
  transform: translateY(-3px);
}

/* Floating Contact Buttons */
.floating-buttons {
  position: fixed;
  bottom: 30px;
  right: 30px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  z-index: 2000;
}

.float-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  color: var(--white);
  text-decoration: none;
  font-size: 1.8rem;
  transition: var(--transition);
}

.float-btn:hover {
  transform: scale(1.1);
}

.whatsapp { background-color: var(--whatsapp-color); }
.phone { background-color: var(--phone-color); }

/* Footer */
footer {
  background: var(--secondary-color);
  color: var(--white);
  padding: 60px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  margin-bottom: 20px;
  color: var(--accent-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.8rem;
}

/* Mobile Menu Toggle */
.mobile-menu-btn {
  display: none;
  font-size: 1.5rem;
  color: var(--primary-color);
  cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.2rem; }
  .nav-links { 
    display: none; 
    flex-direction: column;
    width: 100%;
    background: var(--white);
    position: absolute;
    top: 100%;
    left: 0;
    padding: 20px;
    box-shadow: 0 10px 10px rgba(0,0,0,0.1);
    z-index: 1001;
  }
  .nav-links li {
    margin-bottom: 15px;
  }
  .nav-links.active { 
    display: flex; 
  }
  .mobile-menu-btn { display: block; }
  .floating-buttons { bottom: 20px; right: 20px; }
  .float-btn { width: 50px; height: 50px; font-size: 1.5rem; }
}

/* Service Card Global Styles */
.service-card {
  background: var(--white);
  border-radius: 15px;
  padding: 40px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  min-height: 300px;
  justify-content: flex-end;
  color: var(--white);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0.45;
  transition: var(--transition);
  z-index: 1;
}

.service-card:hover::before {
  opacity: 0.65;
  transform: scale(1.05);
}

.service-card .content {
  position: relative;
  z-index: 2;
  background: linear-gradient(to top, rgba(0,0,0,0.85), rgba(0,0,0,0.4), transparent);
  padding: 25px;
  margin: -40px;
  border-radius: 0 0 15px 15px;
}

.service-card h3 {
  color: var(--white);
  margin-bottom: 10px;
  font-size: 1.4rem;
  font-weight: 800;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
}

.service-card p {
  font-size: 0.95rem;
  line-height: 1.5;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* Specific Card Backgrounds */
.card-vinc::before { background-image: url('../images/vinc_kiralama_branded_1777130413169.webp'); }
.card-sepetli::before { background-image: url('../images/sepetli_vinc_branded_1777130430910.webp'); }
.card-forklift::before { background-image: url('../images/forklift_branded_1777130443562.webp'); }
.card-platform::before { background-image: url('../images/platform_branded_1777130457181.webp'); }
.card-fabrika::before { background-image: url('../images/fabrika_tasima_branded_1777130474949.webp'); }
.card-kayar::before { background-image: url('../images/kayar_kasa_branded_1777130491735.webp'); }