/* ==========================================
   KISCOS Website - Modern Premium Design
   ========================================== */

/* === CSS CUSTOM PROPERTIES === */
:root {
  /* Colors */
  --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --secondary-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --accent-color: #06b6d4;
  --bg-dark: #0a0a0f;
  --bg-dark-alt: #14141f;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 3rem;
  --font-size-4xl: 4rem;
  
  /* Effects */
  --transition-fast: 0.2s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
  --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.5);
}

/* === RESET & BASE STYLES === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-dark-alt) 100%);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: var(--font-size-4xl);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

p {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
}

/* === NAVIGATION === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.9);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-base);
  transition: var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transition: var(--transition-fast);
}

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

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

/* === HERO SECTION === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) var(--spacing-md);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
  top: -250px;
  right: -250px;
  animation: float 6s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
  bottom: -200px;
  left: -200px;
  animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(5deg);
  }
}

.hero-content {
  max-width: 900px;
  text-align: center;
  z-index: 1;
  opacity: 0;
  animation: fadeInUp 1s ease-out forwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 1s ease-out 0.2s forwards;
  opacity: 0;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--accent-color);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  animation: fadeInUp 1s ease-out 0.4s forwards;
  opacity: 0;
}

.hero-description {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 1s ease-out 0.6s forwards;
  opacity: 0;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--primary-gradient);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: var(--font-size-lg);
  transition: var(--transition-normal);
  box-shadow: var(--shadow-glow);
  animation: fadeInUp 1s ease-out 0.8s forwards;
  opacity: 0;
  position: relative;
  overflow: hidden;
}

.cta-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition-slow);
}

.cta-button:hover::before {
  left: 100%;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 60px rgba(99, 102, 241, 0.5);
}

/* === SECTION STYLES === */
section {
  padding: var(--spacing-xl) var(--spacing-md);
  position: relative;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

/* === ABOUT SECTION === */
.about {
  background: var(--bg-dark-alt);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.about-text h3 {
  color: var(--accent-color);
  font-size: var(--font-size-2xl);
}

.acronym {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.acronym-item {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  padding: var(--spacing-md);
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  transition: var(--transition-normal);
}

.acronym-item:hover {
  transform: translateX(10px);
  border-color: rgba(99, 102, 241, 0.5);
  box-shadow: var(--shadow-card);
}

.acronym-item h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-xl);
}

.acronym-item p {
  font-size: var(--font-size-base);
}

/* === VALUES SECTION === */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.value-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  padding: var(--spacing-lg);
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  text-align: center;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.value-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: var(--transition-normal);
}

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

.value-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-card);
  border-color: rgba(99, 102, 241, 0.5);
}

.value-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.5));
}

.value-card h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

/* === SERVICES SECTION === */
.services {
  background: var(--bg-dark-alt);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.service-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  padding: var(--spacing-md);
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  transition: var(--transition-normal);
  cursor: pointer;
}

.service-card:hover {
  transform: scale(1.05);
  border-color: rgba(6, 182, 212, 0.5);
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.3);
}

.service-card h3 {
  color: var(--accent-color);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

/* === CONTACT SECTION === */
.contact-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.contact-info {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  padding: var(--spacing-lg);
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  margin-top: var(--spacing-md);
}

.contact-item {
  margin: var(--spacing-sm) 0;
  font-size: var(--font-size-lg);
}

.contact-item a {
  color: var(--accent-color);
  text-decoration: none;
  transition: var(--transition-fast);
}

.contact-item a:hover {
  color: #8b5cf6;
  text-decoration: underline;
}

/* === FOOTER === */
.footer {
  background: var(--bg-dark);
  padding: var(--spacing-md);
  text-align: center;
  border-top: 1px solid var(--glass-border);
}

.footer p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2.5rem;
    --font-size-3xl: 2rem;
    --font-size-2xl: 1.5rem;
    --spacing-xl: 3rem;
  }
  
  .nav-links {
    gap: var(--spacing-sm);
  }
  
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .values-grid,
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .hero {
    padding: var(--spacing-lg) var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
  }
  
  .nav-links {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  h1 {
    font-size: 2rem;
  }
}