@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  /* Color Palette - Industrial Design Slate & Technical Accents */
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-surface: #1e293b;
  --bg-surface-hover: #283548;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-border: rgba(255, 255, 255, 0.08);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-primary: #38bdf8;       /* Technical Cyan */
  --accent-hover: #0ea5e9;
  --accent-secondary: #10b981;     /* Sustainable Emerald */
  --accent-warning: #f59e0b;       /* Mechanical Amber */
  --accent-danger: #ef4444;

  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'Space Grotesk', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.15);

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.modal-open {
  overflow: hidden !important;
  touch-action: none;
}

/* Typography Defaults */
h1, h2, h3, h4, h5 {
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

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

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

/* Base Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  min-height: 44px; /* Accessible Touch Target */
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #0b0f19;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border-color: var(--bg-card-border);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  min-height: 36px;
}

/* Navigation Bar */
.navbar {
  background-color: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--bg-card-border);
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 0.75rem 1.5rem;
}

.navbar-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.brand-badge {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: #0b0f19;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-link {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
  background-color: var(--bg-surface);
}

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
  width: 100%;
}

/* Badge Component */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid var(--bg-card-border);
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}

.badge-cyan {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border-color: rgba(56, 189, 248, 0.3);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background-color: var(--bg-surface);
  border: 1px solid var(--accent-primary);
  color: var(--text-main);
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  animation: slideIn 0.2s ease forwards;
}

@keyframes slideIn {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Media Queries Responsivas Base */
@media (max-width: 768px) {
  .navbar {
    padding: 0.6rem 1rem;
  }

  .navbar-container {
    padding: 0;
    flex-wrap: wrap;
    gap: 0.6rem;
  }

  .brand {
    font-size: 1.05rem;
    gap: 0.5rem;
  }

  .nav-links {
    gap: 0.35rem;
  }

  .nav-link {
    font-size: 0.82rem;
    padding: 0.35rem 0.55rem;
    min-height: 40px;
  }

  .container {
    padding: 1rem 0.75rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
}

@media (max-width: 480px) {
  .navbar-container {
    justify-content: center;
  }
  .brand {
    width: 100%;
    justify-content: center;
  }
  .nav-links {
    width: 100%;
    justify-content: center;
  }
}