/* =====================================================
   Júnior de Oliveira Portfolio
   Custom Styles & Animations
   ===================================================== */

/* CSS Custom Properties */
:root {
  --color-bg: #0a0f1a;
  --color-surface: #0f172a;
  --color-border: #1e293b;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-accent-cyan: #06b6d4;
  --color-accent-teal: #14b8a6;
  --color-accent-amber: #f59e0b;
  --color-accent-emerald: #10b981;
  --color-accent-rose: #f43f5e;

  --font-sans: 'Outfit', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Selection */
::selection {
  background-color: rgba(6, 182, 212, 0.3);
  color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #334155;
}

/* Grid Background */
.grid-bg {
  background-image:
    linear-gradient(rgba(30, 41, 59, 0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 41, 59, 0.5) 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: center center;
}

/* Text Gradient */
.text-gradient {
  background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-teal) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
#navbar {
  backdrop-filter: blur(0);
  background: transparent;
}

#navbar.scrolled {
  backdrop-filter: blur(12px);
  background: rgba(10, 15, 26, 0.85);
  border-bottom: 1px solid rgba(30, 41, 59, 0.5);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent-cyan);
  transition: width var(--transition-base);
}

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

/* Animations */
@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pulse-slow {
  0%, 100% {
    opacity: 0.4;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.05);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes slide-in-left {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slide-in-right {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in-up {
  animation: fade-in-up 0.8s ease forwards;
  opacity: 0;
}

.animate-fade-in {
  animation: fade-in 0.6s ease forwards;
  opacity: 0;
}

.animate-pulse-slow {
  animation: pulse-slow 4s ease-in-out infinite;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-right.active {
  opacity: 1;
  transform: translateX(0);
}

/* Timeline */
.timeline-item {
  position: relative;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  background: var(--color-accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--color-bg);
}

/* Card Hover Effects */
.card-hover {
  transition: all var(--transition-base);
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Glow Effect */
.glow {
  position: relative;
}

.glow::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-teal));
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
  filter: blur(10px);
}

.glow:hover::before {
  opacity: 0.5;
}

/* Button Styles */
.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-teal));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn-primary:hover::before {
  opacity: 0.1;
}

/* Skill Tags Animation */
.skill-tag {
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  transform: translateY(-2px);
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--color-accent-cyan);
}

/* Experience Card */
.experience-card {
  position: relative;
  transition: all var(--transition-base);
}

.experience-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: transparent;
  transition: background var(--transition-base);
}

.experience-card:hover::before {
  background: var(--color-accent-cyan);
}

/* Section Divider */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

/* Noise Texture Overlay */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Mobile Menu */
#mobile-menu {
  transform: translateX(100%);
  transition: transform var(--transition-base);
}

#mobile-menu.open {
  transform: translateX(0);
}

/* Focus States */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 4px;
}

/* Loading Animation */
.loading-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-teal));
  width: 0;
  animation: loading 1.5s ease-out forwards;
  z-index: 9999;
}

@keyframes loading {
  0% {
    width: 0;
  }
  100% {
    width: 100%;
  }
}

/* Typing Cursor Effect */
.typing-cursor::after {
  content: '|';
  animation: blink 1s infinite;
  color: var(--color-accent-cyan);
}

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

/* Gradient Border */
.gradient-border {
  position: relative;
}

.gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  padding: 1px;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-teal));
  border-radius: inherit;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  html {
    scroll-padding-top: 80px;
  }

  .grid-bg {
    background-size: 40px 40px;
  }

  .animate-fade-in-up {
    animation-duration: 0.6s;
  }
}

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

  html {
    scroll-behavior: auto;
  }
}

/* Print Styles */
@media print {
  body {
    background: white;
    color: black;
  }

  .grid-bg,
  #cursor-glow,
  #navbar,
  .noise-overlay {
    display: none;
  }
}