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

/* ==========================================================================
   ToolZenic - Premium Design System (SaaS Grade)
   ========================================================================== */

:root {
  /* Light Mode - Ultra Clean Mesh Vibe */
  --bg-color: #f8fafc;
  --bg-gradient: radial-gradient(circle at top right, #e0e7ff, transparent 40%),
                 radial-gradient(circle at bottom left, #f3e8ff, transparent 40%);
  --bg-surface: rgba(255, 255, 255, 0.75);
  --bg-surface-hover: rgba(255, 255, 255, 0.95);
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-glow: rgba(79, 70, 229, 0.25);
  
  --border-color: rgba(255, 255, 255, 0.8);
  --border-solid: #e2e8f0;
  --focus-ring: rgba(79, 70, 229, 0.4);

  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
  --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
  --shadow-card-hover: 0 20px 40px -10px rgba(79, 70, 229, 0.15);

  --radius-sm: 0.75rem;
  --radius-md: 1.25rem;
  --radius-lg: 2rem;

  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-12: 3rem;
  
  --glass-blur: blur(16px);
}

[data-theme="dark"] {
  /* Dark Mode - Deep OLED + Neon Accents */
  --bg-color: #020617;
  --bg-gradient: radial-gradient(circle at top left, #1e1b4b, transparent 35%),
                 radial-gradient(circle at bottom right, #0f172a, transparent 40%);
  --bg-surface: rgba(15, 23, 42, 0.6);
  --bg-surface-hover: rgba(30, 41, 59, 0.85);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  
  --primary: #818cf8;
  --primary-hover: #a5b4fc;
  --primary-glow: rgba(129, 140, 248, 0.35);
  
  --border-color: rgba(255, 255, 255, 0.05);
  --border-solid: #334155;
  
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
  --shadow-card-hover: 0 20px 40px -10px rgba(129, 140, 248, 0.2);
}

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

body {
  margin: 0;
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.6;
  transition: background-image 0.5s ease, background-color 0.5s ease, color 0.5s ease;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

h1, h2, h3, h4 {
  color: var(--text-main);
  margin-top: 0;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

/* HEADER */
.site-header {
  background-color: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-glass);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.04em;
}

.logo-icon {
  color: var(--primary);
  filter: drop-shadow(0 0 8px var(--primary-glow));
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
}

.nav-link {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--text-main);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.btn-icon {
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  min-width: 44px;
  min-height: 44px;
}

.btn-icon:hover {
  background-color: var(--bg-surface-hover);
  color: var(--primary);
  transform: translateY(-2px);
}

.mobile-only {
  display: none;
}

@media (max-width: 768px) {
  .mobile-only { display: flex; }
  .main-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background-color: var(--bg-color); /* Color sólido de la página web */
    flex-direction: column;
    padding: var(--spacing-6) var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
    gap: var(--spacing-4);
    opacity: 0; visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .main-nav.active {
    opacity: 1; visibility: visible; transform: translateY(0);
  }
  .nav-link { width: 100%; text-align: center; font-size: 1.1rem; padding: var(--spacing-2); }
}

/* MAIN CONTENT */
.main-content {
  padding-top: var(--spacing-12);
  padding-bottom: var(--spacing-12);
  min-height: calc(100vh - 4.5rem - 6rem);
}

/* HERO SECTION (Homepage) */
.hero-section {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-12);
  padding: var(--spacing-6) 0;
}

.hero-badge {
  display: inline-block;
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-4);
  border: 1px solid var(--primary-glow);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-4);
  background: linear-gradient(135deg, var(--text-main) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.25rem;
  color: var(--text-muted);
  font-weight: 500;
}

.hero-search {
  margin-top: var(--spacing-8);
  position: relative;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-search input {
  width: 100%;
  padding: 1.25rem 1.5rem 1.25rem 3rem;
  font-size: 1.125rem;
  border-radius: 100px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-md);
  color: var(--text-main);
  transition: all 0.3s ease;
}

.hero-search input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow), var(--shadow-glass);
  transform: translateY(-2px);
}

.search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* CATEGORY & TOOLS GRID */
.category-section {
  margin-bottom: var(--spacing-12);
  scroll-margin-top: 6rem; /* Deja espacio para el menú fijo al navegar por anclas */
}

.category-title {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-6);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.category-title::before {
  content: '';
  display: block;
  width: 12px;
  height: 24px;
  background-color: var(--primary);
  border-radius: 4px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-6);
}

.tool-card {
  background-color: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-6);
  display: flex;
  flex-direction: column;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.tool-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-card-hover), var(--shadow-glass);
  background-color: var(--bg-surface-hover);
  border-color: var(--primary-glow);
}

.tool-card:hover::before {
  opacity: 1;
}

.tool-card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-4);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: var(--bg-color);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
}

.tool-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-2);
}

.tool-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
  flex-grow: 1;
}

/* SPECIFIC TOOL PAGES */
.tool-header {
  text-align: center;
  margin-bottom: var(--spacing-8);
}
.tool-header h1 {
  font-size: 2.75rem;
}
.tool-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto;
}

.tool-layout {
  max-width: 900px;
  margin: 0 auto;
}

.tool-app-container {
  background-color: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-glass);
}

/* FORMS AND BUTTONS */
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #6366f1 100%);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 4px 15px var(--primary-glow);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--primary-glow);
}

.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-solid);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.form-control {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--border-solid);
  border-radius: var(--radius-sm);
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
  background-color: var(--bg-surface);
}

label {
  display: block;
  margin-bottom: var(--spacing-2);
  color: var(--text-main);
  font-weight: 600;
}

/* FOOTER */
.site-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-8) 0;
  text-align: center;
  color: var(--text-muted);
  margin-top: auto;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  padding: 8px 16px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--spacing-4);
}

.footer-brand {
  margin-bottom: var(--spacing-4);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-6);
  font-size: 0.9rem;
}

/* ==========================================================================
   Responsive Design Fixes (Mobile Adaptation)
   ========================================================================== */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
  
  .hero-desc {
    font-size: 1.05rem;
  }

  .hero-search input {
    font-size: 1rem;
    padding: 1rem 1rem 1rem 2.5rem;
  }
  
  .search-icon {
    left: 1rem;
  }

  .tools-grid {
    grid-template-columns: 1fr; /* Una sola columna en móviles */
    gap: var(--spacing-4);
  }

  .tool-card {
    padding: var(--spacing-4);
  }

  .tool-header h1 {
    font-size: 2rem;
  }

  .tool-app-container {
    padding: var(--spacing-4);
  }

  .footer-links {
    flex-wrap: wrap;
    gap: var(--spacing-4);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }
  
  .category-title {
    font-size: 1.5rem;
  }
  
  .tool-header h1 {
    font-size: 1.75rem;
  }
}

/* ==========================================================================
   ADSENSE CONTENEDORES ANTI-CLS
   ========================================================================== */
.ad-slot {
  min-height: 100px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgba(0,0,0,0.02);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}

.theme-dark .ad-slot {
  background-color: rgba(255,255,255,0.02);
}

@media (max-width: 768px) {
  .ad-slot {
    min-height: 50px;
  }
}