/* Estudia Pro - Diseño Premium Optimizado */
/* Sistema de diseño mejorado con variables CSS avanzadas */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@600;700;800&display=swap');

:root {
  /* Color system - mejorado con más opciones */
  --bg-primary: #070724;
  --bg-secondary: #0f172a;
  --bg-tertiary: #1a2236;
  --accent-primary: #ffb703;
  --accent-secondary: #00d4ff;
  --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  
  /* Glass morphism system */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(2, 6, 23, 0.4);
  --glass-blur: blur(10px);
  
  /* Spacing system */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Shadows */
  --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 8px 32px rgba(2, 6, 23, 0.4);
  --shadow-lg: 0 20px 60px rgba(2, 6, 23, 0.6);
  --shadow-xl: 0 25px 80px rgba(2, 6, 23, 0.8);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  
  /* Z-index layers */
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-modal: 30;
  --z-popover: 40;
  --z-tooltip: 50;
  --z-toast: 60;
}

/* ============ RESET & BASE STYLES ============ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  font-size: 16px;
}

body {
  min-height: 100vh;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-tertiary) 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern", "liga", "clig", "calt";
  overflow-x: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}

/* Background particles effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(255, 183, 3, 0.05) 0%, transparent 20%),
    radial-gradient(circle at 80% 70%, rgba(0, 212, 255, 0.05) 0%, transparent 20%),
    radial-gradient(circle at 40% 80%, rgba(255, 183, 3, 0.03) 0%, transparent 15%);
  pointer-events: none;
  z-index: -1;
}

/* ============ CONTAINER SYSTEM ============ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

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

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-2xl);
  }
}

/* ============ HEADER & NAVIGATION ============ */
.header {
  padding: var(--space-xl) 0;
  backdrop-filter: blur(8px);
  background: rgba(7, 7, 36, 0.8);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.header.scrolled {
  padding: var(--space-lg) 0;
  background: rgba(7, 7, 36, 0.95);
  box-shadow: var(--shadow-md);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

/* Brand styling */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transition: transform var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.brand:hover {
  transform: translateX(4px);
}

.logo {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: 
    0 0 40px rgba(255, 183, 3, 0.3),
    var(--shadow-lg),
    inset 0 -4px 12px rgba(255, 255, 255, 0.1);
  animation: floaty 6s ease-in-out infinite, glow 3s ease-in-out infinite alternate;
  flex-shrink: 0;
}

.logo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    45deg,
    transparent 30%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 70%
  );
  animation: shine 3s ease-in-out infinite;
}

.logo svg {
  width: 40px;
  height: 40px;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
  z-index: 1;
}

.brand-text h1 {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  margin: 0;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.brand-text p {
  margin: var(--space-xs) 0 0 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 280px;
  line-height: 1.4;
}

/* Navigation */
.main-nav {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
}

/* ============ BUTTON SYSTEM ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  font-family: inherit;
  outline: none;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:active {
  transform: scale(0.98);
}

.btn:focus-visible {
  outline: 3px solid var(--accent-secondary);
  outline-offset: 3px;
}

.btn-default {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}

.btn-default:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-primary {
  background: var(--accent-gradient);
  color: #0a1128;
  font-weight: 700;
  box-shadow: 
    0 4px 20px rgba(255, 183, 3, 0.3),
    0 8px 32px rgba(0, 212, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 
    0 8px 32px rgba(255, 183, 3, 0.4),
    0 16px 48px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  color: var(--info);
}

.btn-secondary:hover {
  background: rgba(59, 130, 246, 0.2);
  border-color: rgba(59, 130, 246, 0.3);
}

.btn-large {
  padding: var(--space-lg) var(--space-xl);
  font-size: 1.1rem;
  min-height: 56px;
}

.btn-small {
  padding: var(--space-xs) var(--space-md);
  font-size: 0.875rem;
  min-height: 36px;
}

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

/* ============ HERO SECTION ============ */
.hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
  }
}

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

.hero-title {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--text-primary) 60%, var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.hero-title .text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-xl);
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  align-items: center;
}

.hero-visual {
  position: relative;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-icons {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 280px;
}

.floating-icon {
  position: absolute;
  font-size: 3rem;
  width: 80px;
  height: 80px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: float 3s ease-in-out infinite;
  box-shadow: var(--glass-shadow);
}

.floating-icon:nth-child(1) { top: 10%; left: 10%; animation-delay: 0s; }
.floating-icon:nth-child(2) { top: 5%; right: 15%; animation-delay: 0.5s; }
.floating-icon:nth-child(3) { bottom: 15%; left: 20%; animation-delay: 1s; }
.floating-icon:nth-child(4) { bottom: 5%; right: 10%; animation-delay: 1.5s; }

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

@media (min-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-xs);
  line-height: 1;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ============ AD PLACEHOLDER ============ */
.ad-placeholder {
  margin: var(--space-xl) 0;
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.03) 0%,
    rgba(255, 255, 255, 0.01) 100%
  );
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.ad-placeholder::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.05),
    transparent
  );
  animation: shimmer 2s infinite;
}

.ad-placeholder span {
  font-weight: 700;
  font-size: 1.1rem;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.5px;
}

/* ============ SECTION STYLES ============ */
.section {
  margin: var(--space-2xl) 0;
  scroll-margin-top: 100px;
}

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

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  color: var(--text-primary);
}

.section-icon {
  font-size: 1.5em;
}

.section-subtitle {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.125rem;
  line-height: 1.6;
}

/* ============ FEATURED TOOLS ============ */
.featured-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

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

@media (min-width: 1200px) {
  .featured-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.featured-card {
  background: linear-gradient(145deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  height: 100%;
}

.featured-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
}

.featured-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-secondary);
  box-shadow: var(--shadow-lg);
}

.featured-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-lg);
}

.tool-icon-large {
  font-size: 3rem;
  width: 80px;
  height: 80px;
  background: var(--glass-bg);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.category-badge {
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.featured-card-body {
  flex: 1;
}

.featured-card-body h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  line-height: 1.3;
}

.featured-card-body p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.featured-card-footer {
  margin-top: auto;
}

.card-link {
  color: var(--accent-secondary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  transition: gap var(--transition-base);
  text-decoration: none;
}

.featured-card:hover .card-link {
  gap: var(--space-sm);
}

/* ============ CATEGORY FILTERS ============ */
.category-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-xl);
  padding: var(--space-sm);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
}

.category-filter {
  padding: var(--space-sm) var(--space-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: inherit;
  font-size: 0.95rem;
}

.category-filter:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.category-filter.active {
  background: var(--glass-bg);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  box-shadow: 0 4px 20px rgba(255, 183, 3, 0.1);
}

/* ============ TOOL GRIDS ============ */
/* Original tool grid */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

@media (min-width: 768px) {
  .tool-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }
}

@media (min-width: 1024px) {
  .tool-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Enhanced tool grid for index */
.tool-grid-enhanced {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.tool-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.3s ease, transform 0.3s ease, all var(--transition-base);
  height: 100%;
}

.tool-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-secondary);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-md);
}

.tool-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-md);
}

.tool-icon {
  font-size: 2rem;
  width: 60px;
  height: 60px;
  background: var(--glass-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tool-category {
  font-size: 0.8rem;
  font-weight: 600;
  padding: var(--space-xs) var(--space-sm);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.tool-card-body {
  flex: 1;
}

.tool-card-body h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
  line-height: 1.3;
}

.tool-card-body p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

.tool-card-footer {
  margin-top: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--accent-secondary);
  font-weight: 600;
}

.card-cta {
  transition: margin-left var(--transition-base);
}

.tool-card:hover .card-cta {
  margin-left: var(--space-xs);
}

/* ============ CARD SYSTEM ============ */
.card {
  position: relative;
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.05) 0%,
    rgba(255, 255, 255, 0.02) 100%
  );
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-base);
  overflow: hidden;
  min-height: 140px;
  display: flex;
  flex-direction: column;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    transparent 0%,
    rgba(255, 183, 3, 0.05) 50%,
    rgba(0, 212, 255, 0.05) 100%
  );
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-lg);
  border-color: rgba(255, 255, 255, 0.12);
}

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

.card-header {
  margin-bottom: var(--space-md);
  position: relative;
  z-index: 1;
}

.card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 var(--space-xs) 0;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  line-height: 1.3;
}

.card-icon {
  width: 24px;
  height: 24px;
  color: var(--accent-primary);
  flex-shrink: 0;
}

.card p.small-muted {
  color: var(--text-secondary);
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
}

.card-content {
  flex: 1;
  position: relative;
  z-index: 1;
}

/* ============ FORM ELEMENTS ============ */
.form-group {
  margin-bottom: var(--space-lg);
  position: relative;
}

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  line-height: 1.4;
}

.form-control {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition-fast);
  backdrop-filter: blur(4px);
  line-height: 1.5;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-secondary);
  box-shadow: 
    0 0 0 3px rgba(0, 212, 255, 0.15),
    inset 0 2px 4px rgba(0, 0, 0, 0.2);
  background: rgba(0, 0, 0, 0.4);
}

.form-control::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.5em;
  padding-right: 3rem;
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* ============ RESULT AREA ============ */
.result-container {
  margin-top: var(--space-lg);
}

.result {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: linear-gradient(
    135deg,
    rgba(0, 0, 0, 0.3) 0%,
    rgba(0, 0, 0, 0.2) 100%
  );
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  font-weight: 600;
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
}

.result::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
}

.result-content {
  position: relative;
  z-index: 1;
  word-break: break-word;
}

/* ============ CTA SECTION ============ */
.cta-section {
  margin: var(--space-2xl) 0;
}

.cta-card {
  background: linear-gradient(135deg, rgba(255,183,3,0.1), rgba(0,212,255,0.1));
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .cta-card {
    grid-template-columns: 2fr 1fr;
    text-align: left;
  }
}

.cta-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
  line-height: 1.2;
}

.cta-description {
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin-bottom: var(--space-xl);
  line-height: 1.6;
  max-width: 600px;
}

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

.cta-icon {
  font-size: 6rem;
  animation: pulse 2s ease-in-out infinite;
}

/* ============ FOOTER ============ */
.footer {
  background: linear-gradient(180deg, rgba(7, 7, 36, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-3xl) 0 var(--space-xl);
  margin-top: auto;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent, 
    var(--accent-primary), 
    var(--accent-secondary), 
    transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 2fr 2fr;
    gap: var(--space-xl);
  }
}

/* Footer Brand */
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.footer-logo {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 
    0 8px 32px rgba(255, 183, 3, 0.2),
    inset 0 -2px 8px rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

.footer-logo svg {
  width: 32px;
  height: 32px;
  color: var(--bg-primary);
}

.footer-title {
  font-family: 'Poppins', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 var(--space-sm) 0;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.footer-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0 0 var(--space-lg) 0;
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: var(--space-sm);
}

.social-link {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-base);
  text-decoration: none;
}

.social-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-secondary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.2);
}

.social-link svg {
  transition: transform var(--transition-base);
}

.social-link:hover svg {
  transform: scale(1.1);
}

/* Footer Links */
.footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

@media (min-width: 640px) {
  .footer-links {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--space-md) 0;
  position: relative;
  padding-bottom: var(--space-xs);
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
}

.footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-list li {
  margin-bottom: var(--space-sm);
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  display: inline-block;
  position: relative;
  padding-left: 0;
  line-height: 1.4;
}

.footer-link::before {
  content: '→';
  position: absolute;
  left: -20px;
  opacity: 0;
  transition: all var(--transition-fast);
  color: var(--accent-secondary);
}

.footer-link:hover {
  color: var(--text-primary);
  padding-left: 20px;
}

.footer-link:hover::before {
  opacity: 1;
  left: 0;
}

/* Newsletter */
.footer-newsletter {
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.03) 0%, 
    rgba(255, 255, 255, 0.01) 100%);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-top: var(--space-md);
}

.footer-newsletter-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0 0 var(--space-lg) 0;
  line-height: 1.5;
}

.newsletter-form .form-group {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.newsletter-form input {
  flex: 1;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-legal-small {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: var(--space-sm);
}

.footer-legal-small a {
  color: var(--accent-secondary);
  text-decoration: none;
}

.footer-legal-small a:hover {
  text-decoration: underline;
}

/* Bottom Bar */
.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--glass-border);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

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

@media (min-width: 768px) {
  .footer-copyright {
    text-align: left;
  }
}

.footer-copyright p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.4;
}

.footer-credits {
  margin-top: var(--space-xs);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.heart {
  color: #ef4444;
  display: inline-block;
  animation: heartbeat 1.5s ease-in-out infinite;
}

.footer-extra {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  justify-content: center;
}

@media (min-width: 768px) {
  .footer-extra {
    justify-content: flex-end;
  }
}

.footer-language {
  position: relative;
}

.language-select {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  padding: var(--space-sm) var(--space-lg);
  color: var(--text-primary);
  font-size: 0.9rem;
  cursor: pointer;
  appearance: none;
  padding-right: 2.5rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1.2em;
}

.language-select:focus {
  outline: none;
  border-color: var(--accent-secondary);
}

.footer-back-to-top {
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.back-to-top:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-secondary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.2);
}

/* ============ ANIMATIONS ============ */
@keyframes floaty {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  33% {
    transform: translateY(-10px) rotate(1deg);
  }
  66% {
    transform: translateY(5px) rotate(-1deg);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 
      0 0 40px rgba(255, 183, 3, 0.3),
      var(--shadow-lg),
      inset 0 -4px 12px rgba(255, 255, 255, 0.1);
  }
  50% {
    box-shadow: 
      0 0 60px rgba(255, 183, 3, 0.5),
      var(--shadow-lg),
      inset 0 -4px 12px rgba(255, 255, 255, 0.1);
  }
}

@keyframes shine {
  0% {
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
  }
  100% {
    transform: translateX(100%) translateY(100%) rotate(45deg);
  }
}

@keyframes shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 3px solid var(--accent-secondary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.5);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--accent-primary), var(--accent-secondary));
  border-radius: var(--radius-full);
  border: 2px solid rgba(15, 23, 42, 0.5);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(var(--accent-secondary), var(--accent-primary));
}

/* ============ UTILITY CLASSES ============ */
.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-effect {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
}

.shadow-lift {
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-base);
}

.shadow-lift:hover {
  box-shadow: var(--shadow-lg);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-sm); }
.gap-3 { gap: var(--space-md); }
.gap-4 { gap: var(--space-lg); }

/* ============ RESPONSIVE IMPROVEMENTS ============ */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }
  
  .main-nav {
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: var(--space-xs);
  }
  
  .tool-grid,
  .tool-grid-enhanced {
    grid-template-columns: 1fr;
  }
  
  .btn-large {
    width: 100%;
    justify-content: center;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
  
  .category-filters {
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: var(--space-xs);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .card,
  .featured-card,
  .tool-card {
    padding: var(--space-lg);
  }
  
  .brand {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .logo {
    width: 60px;
    height: 60px;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-visual {
    min-height: 200px;
  }
  
  .floating-icon {
    width: 60px;
    height: 60px;
    font-size: 2rem;
  }
}

/* ============ DARK MODE SUPPORT ============ */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
  }
}

/* ============ PRINT STYLES ============ */
@media print {
  .btn,
  .ad-placeholder,
  .footer,
  .hero-visual,
  .floating-icons,
  .category-filters,
  .social-link,
  .back-to-top,
  .language-select {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
    font-size: 12pt;
  }
  
  .card,
  .featured-card,
  .tool-card {
    break-inside: avoid;
    box-shadow: none !important;
    border: 1px solid #ddd !important;
    background: white !important;
    color: black !important;
  }
  
  a {
    color: black !important;
    text-decoration: underline;
  }
  
  .container {
    max-width: 100%;
  }
}

/* ===============================
   SELECT & OPTION FIX (GLOBAL)
================================ */

select,
select option {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

select option:checked,
select option:hover {
  background-color: var(--bg-tertiary);
  color: var(--accent-primary);
}