/* CSS Reset and Variables - Dark Theme Fixed */
:root {
  --color-primary: #ffffff;
  --color-accent: #3399ff;
  --color-text: #f0f0f0;
  --color-text-light: #a0a0a0;
  --color-background: #0a0a0a;
  --color-surface: #1a1a1a;
  --color-border: #333333;

  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Space Grotesk', sans-serif;

  --font-xs: 0.75rem;
  --font-sm: 0.875rem;
  --font-base: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 1.875rem;
  --font-4xl: 2.25rem;
  --font-5xl: 3rem;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);

  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;

  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

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

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

/* Custom cursor */
.cursor {
  position: fixed;
  width: 20px;
  height: 20px;
  background-color: var(--color-accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.2s ease;
  mix-blend-mode: difference;
}

@media (hover: hover) {
  .cursor {
    display: block;
  }
}

@media (hover: none) {
  .cursor {
    display: none;
  }
}

/* Hide cursor on mobile devices */
@media (max-width: 768px) {
  .cursor {
    display: none !important;
  }
}

/* Layout Components */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

/* Header Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.header.header-scrolled {
  background-color: rgba(26, 26, 26, 0.98);
  box-shadow: 0 1px 10px rgba(0, 0, 0, 0.3);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-md);
  transition: height var(--transition-normal);
}

@media (min-width: 640px) {
  .nav-container {
    padding: 0 var(--space-lg);
  }
}

.header.header-scrolled .nav-container {
  height: 56px;
}

.logo-image {
  height: 40px;
  width: auto;
  transition: all var(--transition-normal);
}

/* Logo effects for different header states */
.header.header-scrolled .logo-image {
  height: 28px;
  filter: none;
}

/* Logo hover effects */
.logo-link:hover .logo-image {
  transform: scale(1.05);
}

.header:not(.header-scrolled) .logo-link:hover .logo-image {
  filter: brightness(1.1);
}

.nav-menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background-color: rgba(26, 26, 26, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--space-xl) 0;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 99;
}


@media (min-width: 768px) {
  .nav-menu {
    display: flex;
    flex-direction: row;
    position: static;
    background-color: transparent;
    padding: 0;
    transform: none;
    opacity: 1;
    visibility: visible;
    gap: var(--space-xl);
    backdrop-filter: none;
  }
}

.nav-link {
  color: #ffffff;
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-lg);
  position: relative;
  transition: color var(--transition-normal);
  padding: var(--space-md) var(--space-xl);
}

@media (min-width: 768px) {
  .nav-link {
    font-size: var(--font-sm);
    padding: 0;
    color: #ffffff;
  }

  .header.header-scrolled .nav-link {
    color: #ffffff;
  }
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-normal);
}

@media (min-width: 768px) {
  .nav-link::after {
    bottom: -4px;
    left: 0;
    transform: none;
  }
}

/* Hover e Active states - apenas em desktop */
@media (min-width: 768px) {
  /* Hover padrão - muda cor do texto */
  .nav-link:hover {
    color: var(--color-accent);
  }

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

  /* Hover quando menu está escuro (no topo) - apenas linha azul */
  .header:not(.header-scrolled) .nav-link:hover {
    color: inherit;
  }

  .header:not(.header-scrolled) .nav-link:hover::after {
    width: 100%;
  }

  /* Active state - apenas linha azul, sem mudar cor */
  .nav-link.active {
    color: inherit;
  }

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

  /* No hover para item ativo para manter consistência */
  .nav-link.active:hover {
    color: inherit;
  }

  /* Garante que item ativo no topo permaneça branco */
  .header:not(.header-scrolled) .nav-link.active {
    color: #ffffff;
  }

  /* Garante que hover do item ativo no topo permaneça branco */
  .header:not(.header-scrolled) .nav-link.active:hover {
    color: #ffffff;
  }

  }

.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  gap: 4px;
}

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background-color: #ffffff;
  transition: all var(--transition-normal);
}

.header.header-scrolled .hamburger-line {
  background-color: #ffffff;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 var(--space-3xl);
  position: relative;
  background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
  align-items: center;
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 640px) {
  .hero-container {
    padding: 0 var(--space-lg);
  }
}

@media (min-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr 1fr;
  }
}

.hero-content {
  max-width: 600px;
  text-align: left;
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--font-4xl);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--font-5xl);
  }
}

.hero-title-line {
  display: block;
}

.hero-title-accent {
  color: var(--color-accent);
}

.hero-subtitle {
  font-size: var(--font-lg);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: flex-start;
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
    align-items: center;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-normal);
  cursor: pointer;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
  width: 100%;
}

@media (min-width: 640px) {
  .btn {
    width: auto;
  }
}

.btn-primary {
  background-color: var(--color-accent);
  color: white;
}

.btn-primary:hover {
  background-color: #0052cc;
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-ghost:hover {
  background-color: var(--color-surface);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* Code Block */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.code-block {
  width: 100%;
  max-width: 380px;
  background-color: var(--color-surface);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
}

/* Desktop: Increase code-block width by 40% */
@media (min-width: 1024px) {
  .code-block {
    max-width: 532px; /* 380px * 1.4 = 532px (40% increase) */
  }
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background-color: var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.code-dots {
  display: flex;
  gap: var(--space-xs);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red {
  background-color: #ff5f56;
}

.dot-yellow {
  background-color: #ffbd2e;
}

.dot-green {
  background-color: #27ca3f;
}

.code-title {
  font-family: var(--font-primary);
  font-size: var(--font-xs);
  color: var(--color-text-light);
  font-weight: 500;
}

.code-content {
  padding: var(--space-lg);
  overflow-x: auto;
}

.code-content pre {
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
  font-size: var(--font-sm);
  line-height: 1.5;
  color: var(--color-text);
  margin: 0;
}

.code-keyword {
  color: #ff5555;
}

.code-string {
  color: #50fa7b;
}

.code-variable {
  color: #8be9fd;
}

.code-property {
  color: #f1fa8c;
}

.code-function {
  color: #bd93f9;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.scroll-text {
  font-size: var(--font-xs);
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.scroll-arrow {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.scroll-arrow span {
  width: 2px;
  height: 8px;
  background-color: var(--color-text-light);
  transition: all var(--transition-normal);
}

.scroll-arrow span:first-child {
  transform: rotate(45deg) translate(-2px, -2px);
}

.scroll-arrow span:last-child {
  transform: rotate(-45deg) translate(2px, -2px);
}

/* Services Section */
.services {
  padding: var(--space-3xl) 0;
  background-color: var(--color-background);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--font-3xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.section-subtitle {
  font-size: var(--font-lg);
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.service-card {
  background-color: var(--color-surface);
  padding: var(--space-2xl);
  border-radius: var(--border-radius-xl);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

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

.service-icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-accent);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  color: white;
}

.service-title {
  font-size: var(--font-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.service-description {
  font-size: var(--font-sm);
  color: var(--color-text-light);
  line-height: 1.6;
}

/* About Section */
.about {
  padding: var(--space-3xl) 0;
  background-color: var(--color-surface);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .about-content {
    grid-template-columns: 1fr 1fr;
  }
}

.about-title {
  font-family: var(--font-display);
  font-size: var(--font-3xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  line-height: 1.2;
}

.text-accent {
  color: var(--color-accent);
}

.about-description {
  font-size: var(--font-lg);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: var(--font-3xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: var(--font-sm);
  color: var(--color-text-light);
}

.about-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-normal);
}

.about-link:hover {
  transform: translateX(4px);
}

.about-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

.tech-item {
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--color-text);
  transition: all var(--transition-normal);
}

.tech-item:hover {
  background-color: var(--color-accent);
  color: white;
  transform: translateY(-2px);
}

/* Contact Section */
.contact {
  padding: var(--space-3xl) 0;
  background-color: var(--color-background);
}

.contact-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.contact-title {
  font-family: var(--font-display);
  font-size: var(--font-3xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  line-height: 1.2;
}

.contact-subtitle {
  font-size: var(--font-lg);
  color: var(--color-text-light);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

/* Mobile: Contact Info first, then Form */
@media (max-width: 767px) {
  .contact-grid {
    grid-template-rows: auto 1fr;
  }

  .contact-form-wrapper {
    order: 2;
  }

  .contact-info {
    order: 1;
  }
}

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

  /* Reset order for desktop */
  .contact-form-wrapper {
    order: 1;
  }

  .contact-info {
    order: 2;
  }
}

/* Contact Form Styles - Compact and Elegant */
.contact-form-wrapper {
  background-color: var(--color-surface);
  padding: var(--space-lg);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  position: relative;
}

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
  color: var(--color-text);
  font-size: var(--font-sm);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-sm);
  font-family: var(--font-primary);
  background-color: var(--color-background);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(0, 102, 255, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-error {
  display: block;
  margin-top: var(--space-xs);
  color: #dc3545;
  font-size: var(--font-xs);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.form-error.show {
  opacity: 1;
}

.form-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  margin-top: var(--space-sm);
}

.form-submit:hover {
  background-color: #0052cc;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.2);
}

.form-submit:active {
  transform: translateY(0);
}

/* Contact Info Styles - Compact and Elegant */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background-color: var(--color-surface);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.contact-info-item:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.contact-info-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-accent);
  color: white;
  border-radius: var(--border-radius-sm);
  flex-shrink: 0;
}

.contact-info-icon svg {
  width: 16px;
  height: 16px;
}

.contact-info-content a {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.contact-info-content a:hover {
  color: var(--color-accent);
}


/* Footer */
.footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
}

.footer-content {
  text-align: center;
}

.footer-text {
  font-size: var(--font-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

.footer-credit {
  font-size: var(--font-xs);
  color: var(--color-text-light);
}

.heart {
  color: #ff4444;
}

/* Mobile menu */
@media (max-width: 767px) {
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

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

.hero-content,
.hero-visual,
.service-card,
.about-content,
.contact-content {
  animation: fadeInUp 0.8s ease-out;
}

/* Performance optimizations */
.service-card,
.btn,
.about-link {
  will-change: transform;
}

/* Accessibility improvements */
@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;
  }
}

/* Focus styles for better accessibility */
.btn:focus,
.contact-btn:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.mobile-menu-toggle:focus {
  outline: none;
}

.nav-link:focus {
  outline: none;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-border: #000000;
    --color-text-light: #000000;
  }
}

/* Print styles */
@media print {
  .header,
  .cursor,
  .scroll-indicator,
  .mobile-menu-toggle {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .hero {
    min-height: auto;
    padding: 2rem 0;
  }
}