/**
 * ITSOFT DZ - Modern Animated Design System
 * Tech-inspired animations and backgrounds
 */

/* ============================================
   CSS CUSTOM PROPERTIES (Enhanced)
   ============================================ */

:root {
  /* Brand Colors */
  --primary: #0066CC;
  --primary-dark: #004C99;
  --primary-light: #00A3E0;
  --accent: #00D4FF;
  --secondary: #6366f1;

  /* Text Colors */
  --text-main: #0f172a;
  --text-muted: #334155;
  --text-light: #64748b;
  --text-white: #ffffff;

  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-dark: #0f172a;
  --bg-darker: #020617;

  /* UI Colors */
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e2e8f0;
  --border-light: #f1f5f9;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #0066CC 0%, #004C99 100%);
  --gradient-accent: linear-gradient(135deg, #00A3E0 0%, #0066CC 100%);
  --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  --gradient-mesh:
    radial-gradient(at 40% 20%, hsla(280, 100%, 70%, 0.3) 0px, transparent 50%),
    radial-gradient(at 80% 0%, hsla(189, 100%, 56%, 0.3) 0px, transparent 50%),
    radial-gradient(at 0% 50%, hsla(355, 100%, 63%, 0.3) 0px, transparent 50%),
    radial-gradient(at 80% 50%, hsla(240, 100%, 70%, 0.3) 0px, transparent 50%),
    radial-gradient(at 0% 100%, hsla(22, 100%, 50%, 0.3) 0px, transparent 50%),
    radial-gradient(at 80% 100%, hsla(242, 100%, 70%, 0.3) 0px, transparent 50%),
    radial-gradient(at 0% 0%, hsla(343, 100%, 76%, 0.3) 0px, transparent 50%);

  /* Animation timing */
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Colors */
[data-theme="dark"] {
  /* Text Colors */
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-light: #64748b;
  --dark-text-main: #f1f5f9;
  --dark-text-muted: #94a3b8;
  --dark-text-light: #64748b;

  /* Background Colors */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg: #0f172a;
  --bg-alt: #1e293b;
  --border: #334155;
  --border-light: #1e293b;
  --dark-border: #334155;
  --dark-border-light: #1e293b;

  /* Special dark mode colors */
  --dark-text-primary: #f8fafc;
  --dark-text-secondary: #cbd5e1;
  --dark-text-tertiary: #94a3b8;

  /* Dark mode backgrounds */
  --dark-bg-primary: #0f172a;
  --dark-bg-secondary: #1e293b;
  --dark-bg-tertiary: #334155;
}

/* System preference dark mode */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg: #0f172a;
    --bg-alt: #1e293b;
  }
}

/* ============================================
   RESET & BASE
   ============================================ */

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-main);
  background: var(--bg-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ============================================
   ANIMATED BACKGROUNDS
   ============================================ */

/* Animated Mesh Gradient Background */
.animated-bg {
  position: relative;
  background: var(--gradient-primary);
  overflow: hidden;
}

.animated-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-mesh);
  animation: meshMove 20s ease-in-out infinite alternate;
  opacity: 0.6;
}

@keyframes meshMove {
  0% {
    transform: scale(1) translate(0, 0);
  }
  25% {
    transform: scale(1.1) translate(-2%, 2%);
  }
  50% {
    transform: scale(1.05) translate(2%, -1%);
  }
  75% {
    transform: scale(1.15) translate(-1%, -2%);
  }
  100% {
    transform: scale(1) translate(1%, 1%);
  }
}

/* Floating Particles */
.particles-bg {
  position: relative;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

.particles-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
    radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.2), transparent),
    radial-gradient(2px 2px at 50px 160px, rgba(255,255,255,0.3), transparent),
    radial-gradient(2px 2px at 90px 40px, rgba(255,255,255,0.2), transparent),
    radial-gradient(2px 2px at 130px 80px, rgba(255,255,255,0.3), transparent),
    radial-gradient(2px 2px at 160px 120px, rgba(255,255,255,0.2), transparent);
  background-repeat: repeat;
  animation: particlesFloat 25s linear infinite;
}

@keyframes particlesFloat {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(-100px);
  }
}

/* Wave Animation */
.wave-bg {
  position: relative;
  background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary) 100%);
}

.wave-bg::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath fill='rgba(255,255,255,0.1)' d='M0,0 C462,0 662,200 1200,200 L1200,120 L0,120 Z'/%3E%3C/svg%3E");
  background-size: cover;
  animation: wave 8s linear infinite;
}

@keyframes wave {
  0%, 100% {
    background-position: 0 0;
  }
  50% {
    background-position: 100% 0;
  }
}

/* Glowing Grid */
.grid-bg {
  background:
    linear-gradient(rgba(0, 102, 204, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 102, 204, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  background-position: 0 0;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 50px 50px;
  }
}

/* Circuit Pattern */
.circuit-bg {
  background:
    radial-gradient(circle at 25% 25%, rgba(0, 102, 204, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(0, 163, 224, 0.05) 0%, transparent 50%);
  position: relative;
}

.circuit-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(0, 102, 204, 0.02) 2px, transparent 2px),
    linear-gradient(90deg, rgba(0, 102, 204, 0.02) 2px, transparent 2px);
  background-size: 100px 100px;
  animation: circuitPulse 4s ease-in-out infinite;
}

@keyframes circuitPulse {
  0%, 100% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
}

/* ============================================
   ANIMATED GRADIENT TEXT
   ============================================ */

.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 50%, var(--primary-light) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
  0% {
    background-position: 0% center;
  }
  50% {
    background-position: 100% center;
  }
  100% {
    background-position: 0% center;
  }
}

/* ============================================
   FLOATING ANIMATION
   ============================================ */

.float-animation {
  animation: float 6s ease-in-out infinite;
}

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

/* Pulse Glow Animation */
.pulse-glow {
  position: relative;
}

.pulse-glow::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  background: inherit;
  border-radius: inherit;
  transform: translate(-50%, -50%);
  animation: pulseGlow 2s ease-out infinite;
  z-index: -1;
}

@keyframes pulseGlow {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.6;
  }
  100% {
    transform: translate(-50%, -50%) scale(1.5);
    opacity: 0;
  }
}

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

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

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

@keyframes gridScroll {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 60px 60px;
  }
}

@keyframes particlesFloat {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(-100px);
  }
}

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

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger Animation */
.stagger-container > * {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.stagger-container.animate-in > *:nth-child(1) { transition-delay: 0.1s; }
.stagger-container.animate-in > *:nth-child(2) { transition-delay: 0.2s; }
.stagger-container.animate-in > *:nth-child(3) { transition-delay: 0.3s; }
.stagger-container.animate-in > *:nth-child(4) { transition-delay: 0.4s; }
.stagger-container.animate-in > *:nth-child(5) { transition-delay: 0.5s; }
.stagger-container.animate-in > * {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   HOVER EFFECTS
   ============================================ */

.hover-lift {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 102, 204, 0.15);
}

.hover-glow {
  position: relative;
  transition: all 0.3s ease;
}

.hover-glow::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, var(--primary), var(--accent), var(--primary));
  border-radius: inherit;
  opacity: 0;
  z-index: -1;
  transition: opacity 0.3s ease;
  background-size: 200% 200%;
  animation: glowRotate 3s linear infinite;
}

.hover-glow:hover::before {
  opacity: 1;
}

@keyframes glowRotate {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* ============================================
   GLASSMORPHISM
   ============================================ */

.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.glass-dark {
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   TYPING EFFECT
   ============================================ */

.typing-effect {
  overflow: hidden;
  border-right: 3px solid var(--primary);
  white-space: nowrap;
  animation: typing 3s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blink-caret {
  from, to {
    border-color: transparent;
  }
  50% {
    border-color: var(--primary);
  }
}

/* ============================================
   SHIMMER EFFECT
   ============================================ */

.shimmer {
  position: relative;
  overflow: hidden;
}

.shimmer::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 200%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* ============================================
   BOUNCE ANIMATION
   ============================================ */

.bounce {
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-20px);
  }
  60% {
    transform: translateY(-10px);
  }
}

/* ============================================
   ROTATION ANIMATION
   ============================================ */

.rotate-slow {
  animation: rotate 20s linear infinite;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ============================================
   PULSE ANIMATION
   ============================================ */

.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* ============================================
   SCALE ANIMATION
   ============================================ */

.scale-in {
  animation: scaleIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes scaleIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* ============================================
   CONTAINER
   ============================================ */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-fluid {
  width: 100%;
  padding: 0 2rem;
}

/* ============================================
   GRID SYSTEM
   ============================================ */

.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: repeat(1, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(1, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(1, 1fr);
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

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

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

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
  margin-bottom: 1rem;
  max-width: 65ch;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 0.5rem;
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 102, 204, 0.4);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-main);
  border: 1px solid var(--border);
}

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

[data-theme="dark"] .btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.14);
  color: #f1f5f9;
}

[data-theme="dark"] .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--primary-light);
  color: #fff;
}
.btn-large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
  border-color: var(--primary);
  box-shadow: 0 20px 40px rgba(0, 102, 204, 0.1);
  transform: translateY(-8px);
}

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

/* ============================================
   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; }

.p-1 { padding: 1rem; }
.p-2 { padding: 2rem; }
.p-3 { padding: 3rem; }
.p-4 { padding: 4rem; }

.section {
  padding: 5rem 0;
  position: relative;
}

@media (max-width: 768px) {
  .section {
    padding: 3rem 0;
  }

  h1 {
    font-size: 2.5rem;
  }

  .container {
    padding: 0 1rem;
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}