/* Portfolio Pessoal - Deivison Santana */

:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #64748b;
  --accent-color: #10b981;
  --background-dark: #0f172a;
  --background-light: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --border-color: #334155;
  --gradient-primary: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  --gradient-accent: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  background: var(--background-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: var(--transition);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition);
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(
    135deg,
    var(--background-dark) 0%,
    var(--background-light) 100%
  );
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 30% 20%,
      rgba(37, 99, 235, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 70% 80%,
      rgba(16, 185, 129, 0.1) 0%,
      transparent 50%
    );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInUp 1s ease;
}

.subtitle {
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  color: var(--accent-color);
  margin-bottom: 1.5rem;
  font-weight: 600;
  animation: fadeInUp 1s ease 0.2s both;
}

.description {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  line-height: 1.8;
  animation: fadeInUp 1s ease 0.4s both;
}

.cta-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease 0.6s both;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 32px 64px -12px rgba(37, 99, 235, 0.4);
}

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

.btn-secondary:hover {
  border-color: var(--primary-color);
  background: rgba(37, 99, 235, 0.1);
}

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

/* Sections */
.section {
  padding: 6rem 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--background-light);
}

.section-title {
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 4rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* About Section */
.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-text {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  line-height: 1.8;
}

.mission-card {
  background: var(--gradient-accent);
  padding: 2.5rem;
  border-radius: 20px;
  color: white;
  box-shadow: var(--shadow-lg);
}

.mission-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.project-card {
  background: var(--background-light);
  padding: 2.5rem;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.project-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.project-card p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.tech-tag {
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary-color);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(37, 99, 235, 0.2);
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.skill-category {
  background: var(--background-light);
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.skill-category:hover {
  border-color: var(--primary-color);
  transform: translateY(-5px);
}

.skill-category h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-tag {
  background: var(--gradient-accent);
  color: white;
  padding: 0.75rem 1.25rem;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.skill-tag:hover {
  transform: scale(1.05);
}

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

.contact-text {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
}

.contact-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background: var(--background-dark);
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-secondary);
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .nav {
    padding: 1rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .hero {
    text-align: center;
    padding: 2rem 0;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .contact-buttons {
    flex-direction: column;
    align-items: center;
  }

  .section {
    padding: 4rem 0;
  }
}

@media (max-width: 480px) {
  .nav-links {
    display: none;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Smooth scrolling improvements */
html {
  scroll-padding-top: 80px;
}

/* Loading animation */
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading {
  animation: pulse 2s infinite;
}

/* Dark mode enhancements */
@media (prefers-color-scheme: dark) {
  :root {
    --background-dark: #0a0f1c;
    --background-light: #151b2b;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --border-color: #64748b;
    --text-secondary: #e2e8f0;
  }
}

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

  html {
    scroll-behavior: auto;
  }
}