/**
 * Multi-tool Hub Design System (Dark Mode Premium)
 * Inspiración estética en 2026.idired.com
 */

:root {
    --color-bg-dark: #FFFFFF;
    --color-card-dark: #FFFFFF;
    --color-bg-light: #F9FAFB;
    --color-text-primary: #111827;
    --color-text-secondary: #4B5563;
    --color-text-muted: #9CA3AF;
    --color-text-white: #FFFFFF;
    --color-cyan: #6600D3;       /* Púrpura de iDiRed */
    --color-cyan-hover: #7E1AF2;
    --color-cyan-glow: rgba(102, 0, 211, 0.05);
    --color-blue-dark: #3B38EB;  /* Azul iDiRed */
    --color-blue-deep: #2522C4;
    --color-border: #E5E7EB;
    --color-border-focus: #7E1AF2;
    --color-success: #10B981;
    --color-error: #EF4444;
    
    --font-primary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --max-width-container: 1200px;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    
    --transition-fast: 0.2s ease;
    --transition-medium: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-elastic: 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.175);
    
    --shadow-premium: 0 10px 30px -10px rgba(11, 24, 44, 0.08), 0 1px 3px rgba(11, 24, 44, 0.02);
    --shadow-hover: 0 20px 40px -15px rgba(59, 56, 235, 0.15), 0 1px 3px rgba(11, 24, 44, 0.02);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-bg-dark);
}

body {
    background-color: var(--color-bg-dark);
    background-image: 
        linear-gradient(rgba(102, 0, 211, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(102, 0, 211, 0.015) 1px, transparent 1px);
    background-size: 48px 48px;
    background-attachment: fixed;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Efectos de Iluminación Radial Premium */
.bg-glow-right {
    position: absolute;
    top: -150px;
    right: -100px;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(102, 0, 211, 0.08) 0%, rgba(102, 0, 211, 0) 70%);
    filter: blur(100px);
    z-index: -1;
    pointer-events: none;
}

.bg-glow-left {
    position: absolute;
    bottom: -150px;
    left: -100px;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 56, 235, 0.06) 0%, rgba(59, 56, 235, 0) 70%);
    filter: blur(100px);
    z-index: -1;
    pointer-events: none;
}

.container {
    width: 100%;
    max-width: var(--max-width-container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

/* Header */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.header-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-logo {
    display: flex;
    align-items: center;
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -1px;
    color: var(--color-text-white);
}

.brand-logo span {
    background: linear-gradient(135deg, var(--color-text-white) 0%, var(--color-cyan-hover) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-dot {
    color: var(--color-cyan-hover);
    margin-left: 2px;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.nav-link:hover, .nav-link.active {
    color: var(--color-cyan);
}

/* Layout y Hero */
main {
    margin-top: 80px;
    padding: 4rem 0;
}

.hero-section {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
    position: relative;
}

.hero-badge {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background-color: var(--color-cyan-glow);
    color: #a855f7;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-radius: 50px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(126, 26, 242, 0.2);
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -1.5px;
    margin-bottom: 1rem;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-blue-dark) 0%, var(--color-cyan-hover) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Grid de Herramientas (Portada Hub) */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.tool-card {
    background-color: var(--color-card-dark);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 2.5rem 2rem;
    transition: transform var(--transition-elastic), box-shadow var(--transition-medium), border-color var(--transition-medium);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-blue-dark), var(--color-cyan));
    opacity: 0.6;
    transition: opacity var(--transition-medium);
}

.tool-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: var(--shadow-hover);
    border-color: rgba(126, 26, 242, 0.3);
}

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

.tool-icon {
    width: 50px;
    height: 50px;
    background-color: var(--color-cyan-glow);
    color: var(--color-cyan-hover);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    transition: transform var(--transition-fast);
}

.tool-card:hover class="tool-icon" {
    transform: rotate(6deg) scale(1.1);
}

.tool-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.tool-desc {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: 1.75rem;
    flex-grow: 1;
}

.tool-link {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-cyan-hover);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.tool-link span {
    transition: transform var(--transition-fast);
}

.tool-card:hover .tool-link span {
    transform: translateX(5px);
}

/* Modals & Forms (Optimizar fuentes) */
.form-card {
    background-color: var(--color-card-dark);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 3rem;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: var(--shadow-premium);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 1.5rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.form-group input, .form-group select {
    padding: 0.9rem 1.2rem;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    background-color: var(--color-bg-light);
    color: var(--color-text-primary);
    transition: var(--transition-fast);
    outline: none;
    width: 100%;
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px var(--color-cyan-glow);
    background-color: var(--color-bg-dark);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-medium);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-blue-dark) 0%, var(--color-cyan) 100%);
    color: var(--color-text-white);
    box-shadow: 0 4px 15px rgba(59, 56, 235, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 0, 211, 0.4);
}

.btn-success {
    background-color: var(--color-success);
    color: var(--color-text-white);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.25);
}

.btn-success:hover {
    transform: translateY(-2px);
    background-color: #059669;
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-block {
    width: 100%;
    display: flex;
}

/* Pantalla de Carga y Animaciones (Espera Forzada de 15-20s) */
.loading-screen {
    display: none; /* Se activa por JS */
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem 1.5rem;
    min-height: 400px;
}

.cyber-loader {
    position: relative;
    width: 100px;
    height: 100px;
    margin-bottom: 2rem;
}

.loader-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 4px solid transparent;
    border-top-color: var(--color-cyan-hover);
    animation: loader-spin 1.5s linear infinite;
}

.loader-ring-inner {
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
    border-radius: 50%;
    border: 4px solid transparent;
    border-top-color: var(--color-blue-dark);
    animation: loader-spin-reverse 1s linear infinite;
}

.loader-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.8rem;
    animation: pulse-glow 2s infinite ease-in-out;
}

.loading-text {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.loading-progress-bar {
    width: 100%;
    max-width: 400px;
    height: 6px;
    background-color: rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    overflow: hidden;
    margin: 1.5rem 0;
    position: relative;
}

.progress-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--color-blue-dark), var(--color-cyan-hover));
    border-radius: 10px;
    transition: width 0.2s ease-out;
}

.loading-subtext {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

@keyframes loader-spin {
    to { transform: rotate(360deg); }
}

@keyframes loader-spin-reverse {
    to { transform: rotate(-360deg); }
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.5; filter: drop-shadow(0 0 2px var(--color-cyan-hover)); }
    50% { opacity: 1; filter: drop-shadow(0 0 10px var(--color-cyan-hover)); }
}

/* Contenedores de Publicidad (Google AdSense Layout) */
.adsense-placeholder {
    margin: 2.5rem auto;
    padding: 0;
    border: none;
    background-color: transparent;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    max-width: 728px;
    min-height: 90px;
    text-align: center;
}

.adsense-label {
    display: none;
}

/* Pantalla de Descargas y Estadísticas */
.result-container {
    max-width: 900px;
    margin: 0 auto;
}

.download-card {
    background-color: var(--color-card-dark);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow-premium);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 2.5rem 0;
}

.stat-box {
    background-color: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    border-radius: var(--border-radius-sm);
    text-align: center;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-text-primary);
    display: block;
    margin-bottom: 0.25rem;
}

.stat-number.savings {
    color: var(--color-success);
    background: linear-gradient(135deg, #10B981 0%, #34D399 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Alertas de error/éxito */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius-sm);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    font-weight: 500;
    border: 1px solid transparent;
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.2);
    color: #a7f3d0;
}

.main-footer {
    border-top: 1px solid var(--color-border);
    background-color: #0B0F19;
    padding: 2.5rem 0;
    margin-top: auto;
    font-size: 0.85rem;
    text-align: center;
    color: #9CA3AF;
}

/* Ajustes Responsive y Centrado */
@media (max-width: 768px) {
    body {
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }
    
    .main-header {
        height: auto;
        padding: 1rem 0;
        position: relative;
    }
    
    .header-container {
        flex-direction: column;
        gap: 0.75rem;
        justify-content: center;
        text-align: center;
    }
    
    main {
        margin-top: 10px;
        padding: 2rem 0;
        flex-grow: 1;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .form-card, .download-card {
        padding: 2rem 1.5rem;
        margin: 0 0.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .nav-links {
        display: flex;
        justify-content: center;
        gap: 1.25rem;
        width: 100%;
    }
    
    .nav-link {
        font-size: 0.85rem;
    }
}