/* 
 * KUZEY VISION - Style Sheet
 * Typography: Inter (Google Fonts)
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --deep-olive: #1B2A22;
  --forest-green: #2F5A3C;
  --copper-orange: #C96A1B;
  --warm-sand: #E6DED2;
  --carbon-black: #25282B;
  
  --white: #ffffff;
  --light-gray: rgba(255, 255, 255, 0.1);
  --border-color: rgba(255, 255, 255, 0.08);

  /* Typography */
  --font-main: 'Inter', sans-serif;
  
  /* Transitions */
  --trans-fast: 0.2s ease;
  --trans-normal: 0.3s ease;
  --trans-slow: 0.5s ease;
}

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

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

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

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all var(--trans-normal);
  text-transform: uppercase;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--copper-orange);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(201, 106, 27, 0.3);
}

.btn-primary:hover {
  background-color: #e37b23;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201, 106, 27, 0.4);
}

.btn-outline {
  background-color: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--white);
  transform: translateY(-2px);
}

/* --- Header & Navigation --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: all var(--trans-normal);
  background: transparent;
}

header.scrolled {
  background: rgba(27, 42, 34, 0.95);
  backdrop-filter: blur(10px);
  padding: 12px 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--white);
}

.logo-text span {
  color: var(--copper-orange);
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links li a {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  position: relative;
  transition: color var(--trans-fast);
}

.nav-links li a:hover {
  color: var(--copper-orange);
}

.nav-links li a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--copper-orange);
  transition: width var(--trans-normal);
}

.nav-links li a:hover::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--white);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(to right, rgba(27, 42, 34, 0.9), rgba(37, 40, 43, 0.8)), url('https://images.unsplash.com/photo-1557597774-9d273605dfa9?auto=format&fit=crop&q=80&w=2000') center/cover no-repeat;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 150px;
  background: linear-gradient(to top, var(--carbon-black), transparent);
}

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

.hero-subtitle {
  color: var(--copper-orange);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 15px;
  display: inline-block;
  font-size: 0.9rem;
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 25px;
  text-transform: uppercase;
  letter-spacing: -1px;
}

.hero-title span {
  color: var(--warm-sand);
  font-weight: 300;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--warm-sand);
  margin-bottom: 40px;
  max-width: 600px;
  opacity: 0.9;
}

.hero-btns {
  display: flex;
  gap: 15px;
}

/* --- Features Bar --- */
.features-bar {
  background-color: var(--deep-olive);
  padding: 30px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  z-index: 10;
  margin-top: -5px;
}

.features-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.feature-icon {
  color: var(--copper-orange);
  font-size: 1.5rem;
}

.feature-text {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--warm-sand);
}

/* --- Solutions Section --- */
.solutions {
  padding: 100px 0;
  background-color: var(--carbon-black);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-subtitle {
  color: var(--copper-orange);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-transform: uppercase;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.solution-card {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 40px 30px;
  text-align: center;
  transition: all var(--trans-normal);
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--forest-green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--trans-normal);
}

.solution-card:hover {
  transform: translateY(-10px);
  background-color: rgba(47, 90, 60, 0.1);
  border-color: rgba(47, 90, 60, 0.3);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

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

.solution-icon {
  font-size: 3rem;
  color: var(--warm-sand);
  margin-bottom: 20px;
  transition: color var(--trans-normal);
}

.solution-card:hover .solution-icon {
  color: var(--copper-orange);
}

.solution-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.solution-desc {
  font-size: 0.9rem;
  color: rgba(230, 222, 210, 0.7);
}

/* --- Values Section --- */
.values {
  padding: 80px 0;
  background-color: var(--deep-olive);
  border-top: 1px solid var(--border-color);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.value-item {
  text-align: center;
}

.value-icon-wrapper {
  width: 80px;
  height: 80px;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 2rem;
  color: var(--copper-orange);
  transition: all var(--trans-normal);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.value-item:hover .value-icon-wrapper {
  background-color: var(--copper-orange);
  color: var(--white);
  transform: scale(1.1);
}

.value-title {
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* --- Vision Section --- */
.vision {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--carbon-black) 0%, #111 100%);
}

.vision-content {
  background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI4IiBoZWlnaHQ9IjgiPgo8cmVjdCB3aWR0aD0iOCIgaGVpZ2h0PSI4IiBmaWxsPSIjMjUyODJCIj48L3JlY3Q+CjxwYXRoIGQ9Ik0wIDBMOCA4Wk04IDBMMCA4WiIgc3Ryb2tlPSIjMjIyNTI4IiBzdHJva2Utd2lkdGg9IjEiPjwvcGF0aD4KPC9zdmc+') repeat;
  border-radius: 12px;
  padding: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  position: relative;
  overflow: hidden;
}

.vision-content::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(47, 90, 60, 0.1));
}

.vision-text h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.vision-text p {
  color: var(--warm-sand);
  font-size: 1.1rem;
  opacity: 0.8;
  margin-bottom: 20px;
}

.vision-brand {
  text-align: right;
}

.vision-brand h4 {
  font-size: 1.5rem;
  color: var(--copper-orange);
  letter-spacing: 2px;
  margin-bottom: 5px;
}

.vision-brand p {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0.6;
}

/* --- Footer --- */
footer {
  background-color: #111;
  padding: 60px 0 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-about p {
  color: rgba(255, 255, 255, 0.6);
  margin-top: 20px;
  font-size: 0.9rem;
  max-width: 300px;
}

.footer-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--warm-sand);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  transition: color var(--trans-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.8rem;
}

/* --- Responsive --- */
@media (max-width: 992px) {
  .hero-title { font-size: 3rem; }
  .values-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .vision-content { flex-direction: column; text-align: center; gap: 30px; }
  .vision-brand { text-align: center; }
  .footer-top { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 250px;
    height: 100vh;
    background-color: var(--deep-olive);
    flex-direction: column;
    padding: 80px 30px;
    transition: right var(--trans-normal);
    box-shadow: -5px 0 15px rgba(0,0,0,0.5);
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .mobile-menu-btn {
    display: block;
    z-index: 1001;
  }
  
  .hero-title { font-size: 2.2rem; }
  .hero-desc { font-size: 1rem; }
  
  .features-grid {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}