/*
 * ICODROID - Main Stylesheet
 * Version: 1.0.0
 * Description: Global styles for ICODROID website
 */

/* ========================================
   RESET & VARIABLES
   ======================================== */

:root {
  /* Colors */
  --primary-color: #00d4ff;
  --secondary-color: #0066ff;
  --accent-color: #ff6b00;
  --dark-bg: #0a0e27;
  --darker-bg: #050816;
  --light-text: #ffffff;
  --gray-text: #a0aec0;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;

  /* Typography */
  --font-primary: 'Lato', sans-serif;
  --font-secondary: 'Orbitron', sans-serif;

  /* Spacing */
  --section-padding: 100px 0;
  --container-max-width: 1200px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 212, 255, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 212, 255, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 212, 255, 0.3);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.5);
}

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

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

body {
  font-family: var(--font-primary);
  background-color: var(--darker-bg);
  color: var(--light-text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

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

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

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

/* ========================================
   LAYOUT
   ======================================== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: var(--section-padding);
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: 4rem;
  position: relative;
}

.section-title h2 {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.section-title p {
  font-size: 1.2rem;
  color: var(--gray-text);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(10, 14, 39, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 212, 255, 0.1);
  z-index: 1000;
  transition: var(--transition-normal);
}

.header.scrolled {
  background: rgba(10, 14, 39, 0.98);
  box-shadow: var(--shadow-md);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  font-family: var(--font-secondary);
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  transition: var(--transition-fast);
}

.logo:hover {
  filter: brightness(1.2);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2.5rem;
  align-items: center;
}

.nav-link {
  color: var(--light-text);
  font-weight: 500;
  position: relative;
  transition: var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition-normal);
}

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

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

.btn-header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  color: var(--light-text);
  font-weight: 600;
  transition: var(--transition-normal);
  border: none;
  cursor: pointer;
}

.btn-header:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.mobile-toggle span {
  width: 25px;
  height: 3px;
  background: var(--primary-color);
  transition: var(--transition-fast);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-weight: 600;
  text-align: center;
  transition: var(--transition-normal);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--light-text);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
  color: var(--light-text);
}

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

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

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

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

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background: var(--darker-bg);
  border-top: 1px solid rgba(0, 212, 255, 0.1);
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.footer-section p,
.footer-section a {
  color: var(--gray-text);
  margin-bottom: 0.5rem;
  display: block;
}

.footer-section a:hover {
  color: var(--primary-color);
  padding-left: 5px;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0, 212, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-normal);
}

.social-link:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 212, 255, 0.1);
  color: var(--gray-text);
  font-size: 0.9rem;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mt-4 { margin-top: 4rem; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mb-4 { margin-bottom: 4rem; }

.gradient-text {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glow {
  box-shadow: var(--shadow-glow);
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

.fade-in-up {
  animation: fadeInUp 0.8s ease forwards;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 968px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.75rem; }

  .section { padding: 60px 0; }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    flex-direction: column;
    background: var(--dark-bg);
    width: 100%;
    padding: 2rem;
    gap: 1.5rem;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.active {
    left: 0;
  }

  .mobile-toggle {
    display: flex;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  html { font-size: 14px; }

  .container { padding: 0 1rem; }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }
}

/* ========================================
   LOADING & PRELOADER
   ======================================== */

.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--darker-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(0, 212, 255, 0.1);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========================================
   PARTICLES BACKGROUND
   ======================================== */

.particles-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(180deg,
    #050816 0%,
    #0a0e27 25%,
    #0d1235 50%,
    #0a0e27 75%,
    #050816 100%
  );
}

#particles-bg canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.particles-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

#particles-js canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}