/* Reset y Variables Globales */
:root {
    /* Colores principales */
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --accent-color: #f72585;
    --success-color: #4cc9f0;
    --warning-color: #f8961e;
    --danger-color: #f94144;
    
    /* Tema claro */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --text-primary: #2b2d42;
    --text-secondary: #6c757d;
    --border-color: #e9ecef;
    --shadow-color: rgba(0, 0, 0, 0.1);
    
    /* Tipografía */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Espaciado */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    
    /* Bordes */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Tema oscuro */
[data-theme="dark"] {
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --accent-color: #f72585;
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-card: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

/* Reset y Estilos Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Header */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(var(--bg-secondary-rgb), 0.95);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-sm) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
}

.logo-img {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    object-fit: contain;
    transition: transform var(--transition-normal);
}

.logo-img:hover {
    transform: scale(1.05);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.logo-highlight {
    color: var(--accent-color);
}

.logo-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

.nav-main .nav-list {
    display: flex;
    list-style: none;
    gap: var(--space-md);
}

.nav-item {
    position: relative;
}

.nav-item a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-item a:hover {
    color: var(--primary-color);
    background-color: var(--bg-card);
}

.nav-item.active a {
    color: var(--primary-color);
    background-color: var(--bg-card);
}

.theme-toggle button {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.theme-toggle button:hover {
    color: var(--primary-color);
    background-color: var(--bg-card);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: var(--space-xl) var(--space-lg);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="white" opacity="0.1"/></svg>');
    background-size: cover;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: slideInLeft 0.8s ease-out;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--space-md);
    line-height: 1.2;
}

.hero-description {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--space-lg);
    max-width: 600px;
}

.hero-stats {
    display: flex;
    gap: var(--space-xl);
    margin-top: var(--space-lg);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
    color: red;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: slideInRight 0.8s ease-out;
}

.visual-circle {
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    animation: float 6s ease-in-out infinite;
}

/* Main Content */
.main-content {
    padding: var(--space-xl) 0;
    background-color: var(--bg-secondary);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    font-size: 1.125rem;
}

/* Tool Cards */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); /* Cambia de 280px a 250px */
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.tool-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-md); /* Cambia de var(--space-lg) a var(--space-md) */
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    min-height: 180px; /* AÑADE para altura consistente */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: translateY(-100%);
    transition: transform var(--transition-normal);
}

.tool-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: 0 12px 24px var(--shadow-color);
}

.tool-card:hover::before {
    transform: translateY(0);
}

.tool-card-icon {
    width: 50px; /* Reduce de 70px */
    height: 50px; /* Reduce de 70px */
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-sm); /* Reduce margen */
    font-size: 1.5rem; /* Reduce de 2rem */
    color: white;
}


.tool-card-title {
    font-size: 1.1rem; /* Reduce de 1.25rem */
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
    line-height: 1.3;
}

.tool-card-desc {
    font-size: 0.8rem; /* Reduce de 0.875rem */
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    line-height: 1.4;
    flex-grow: 1;
}

.tool-badge {
    display: inline-block;
    padding: 4px 12px;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Tool Display Area */
.tool-display {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: 0 8px 32px var(--shadow-color);
    min-height: 600px;
}

.tool-header {
    text-align: center;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 2px solid var(--border-color);
}

.tool-display-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--space-sm);
}

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

/* Calculator Styles */
.calculator {
    max-width: 500px;
    margin: 0 auto;
}

.calculator-display {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-md);
    border: 2px solid var(--border-color);
}

.calc-display {
    width: 100%;
    background: none;
    border: none;
    font-size: 2.5rem;
    font-weight: 700;
    text-align: right;
    color: var(--text-primary);
    outline: none;
    font-family: var(--font-primary);
}

.calc-expression {
    font-size: 1rem;
    color: var(--text-secondary);
    text-align: right;
    min-height: 24px;
    font-family: monospace;
}

.calculator-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: var(--space-lg);
}

.calc-btn {
    padding: 20px;
    font-size: 1.25rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-family: var(--font-primary);
}

.calc-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

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

.calc-btn.operator {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.calc-btn.equals {
    background: linear-gradient(135deg, var(--accent-color), var(--warning-color));
    color: white;
}

.calc-btn.double {
    grid-column: span 2;
}

.calculator-history {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
}

.history-list {
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: var(--space-md);
    padding: var(--space-sm);
    background-color: var(--bg-card);
    border-radius: var(--radius-sm);
}

.clear-history {
    width: 100%;
    padding: var(--space-sm);
    background: linear-gradient(135deg, var(--danger-color), var(--warning-color));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.clear-history:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(249, 65, 68, 0.3);
}

/* Converter Styles */
.converter {
    max-width: 600px;
    margin: 0 auto;
}

.converter-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.input-group input,
.input-group select {
    padding: 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.convert-btn {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.convert-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(67, 97, 238, 0.3);
}

.converter-result {
    animation: fadeIn 0.5s ease-out;
}

.result-card {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    border: 2px solid var(--border-color);
}

.result-card h4 {
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

.result-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--space-sm);
}

.result-formula {
    font-family: monospace;
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding: var(--space-sm);
    background-color: var(--bg-primary);
    border-radius: var(--radius-sm);
}

/* Password Generator */
.password-generator {
    max-width: 600px;
    margin: 0 auto;
}

.generator-controls {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    border: 2px solid var(--border-color);
}

.control-group {
    margin-bottom: var(--space-md);
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
}

.control-group input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--bg-secondary);
    outline: none;
    -webkit-appearance: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
}

.generate-btn {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, var(--success-color), var(--primary-color));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.generate-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(76, 201, 240, 0.3);
}

.password-result {
    animation: fadeIn 0.5s ease-out;
}

.password-display {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    border: 2px solid var(--border-color);
}

#generated-password {
    flex: 1;
    font-size: 1.5rem;
    font-weight: 600;
    font-family: monospace;
    letter-spacing: 2px;
    color: var(--text-primary);
}

.copy-btn {
    padding: 12px;
    background: var(--bg-secondary);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.password-strength {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border: 2px solid var(--border-color);
}

.strength-meter {
    height: 10px;
    background-color: var(--bg-secondary);
    border-radius: 5px;
    margin-bottom: 8px;
    overflow: hidden;
}

.strength-bar {
    height: 100%;
    width: 50%;
    background: linear-gradient(90deg, var(--danger-color), var(--warning-color), var(--success-color));
    border-radius: 5px;
    transition: width var(--transition-normal);
}

.strength-label {
    font-weight: 600;
    color: var(--text-primary);
}

/* Text Analyzer */
.text-analyzer {
    max-width: 800px;
    margin: 0 auto;
}

.analyzer-input textarea {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    resize: vertical;
    font-family: var(--font-primary);
    transition: all var(--transition-fast);
}

.analyzer-input textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.text-actions {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.action-btn {
    flex: 1;
    padding: 14px;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.action-btn:first-child {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.action-btn:last-child {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.analyzer-results {
    margin-top: var(--space-xl);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.stat-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    border: 2px solid var(--border-color);
    transition: all var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow-color);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.text-insights {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 2px solid var(--border-color);
}

.text-insights h4 {
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.insights-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

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

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.footer-logo img {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
}

.footer-logo-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.footer-logo-text h3 span {
    color: var(--accent-color);
}

.footer-logo-text p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

.footer-tagline {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-section ul li a {
    text-decoration: none;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
    transform: translateX(4px);
}

.social-links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-bottom p {
    margin-bottom: 8px;
}

.footer-bottom p:last-child {
    margin-bottom: 0;
}

/* Animaciones */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .nav-main .nav-list {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .tools-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .tool-display {
        padding: var(--space-lg);
    }
    
    .tool-display-title {
        font-size: 2rem;
    }
    
    .converter-inputs {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }
    
    .hero {
        padding: var(--space-lg) var(--space-sm);
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .visual-circle {
        width: 200px;
        height: 200px;
        font-size: 4rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .calculator-buttons {
        grid-template-columns: repeat(4, 1fr);
        gap: 8px;
    }
    
    .calc-btn {
        padding: 16px;
        font-size: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* Utilidades */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}