/* CSS Variables */
:root {
    --clr-primary: #6C5CE7; /* morado/índigo */
    --clr-secondary: #22D3EE; /* turquesa */
    --clr-accent: #FF66C4; /* rosa */
    --clr-warm: #FFB84D; /* amarillo/naranja */
    --clr-dark: #0F172A; /* slate-900 */
    --clr-light: #F8FAFC; /* slate-50 */
    
    --grad-sunset: linear-gradient(90deg, #FFB84D 0%, #FF66C4 45%, #6C5CE7 100%);
    --grad-violet: linear-gradient(135deg, #6C5CE7 0%, #8B5CF6 100%);
    --grad-warm: linear-gradient(135deg, #FFB84D 0%, #FF66C4 100%);
    --grad-cool: linear-gradient(135deg, #22D3EE 0%, #6C5CE7 100%);
}

/* Base Styles */
* {
    box-sizing: border-box;
}

/* Smooth scrolling adjustment for anchor links */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--clr-dark);
}

/* Utility Classes */
.container-lg {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 1280px) {
    .container-lg {
        max-width: 1280px;
    }
}

.section-py {
    padding-top: clamp(3rem, 6vw, 6rem);
    padding-bottom: clamp(3rem, 6vw, 6rem);
}

.section-gradient {
    background: var(--grad-sunset);
}

.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    color: white;
    background: var(--grad-sunset);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    opacity: 0.95;
}

.btn-primary:focus {
    outline: 2px solid var(--clr-secondary);
    outline-offset: 2px;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    color: var(--clr-dark);
    background: white;
    border: 2px solid var(--clr-primary);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--clr-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-secondary:focus {
    outline: 2px solid var(--clr-secondary);
    outline-offset: 2px;
}

/* Cards */
.card {
    border-radius: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    background: var(--grad-violet);
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Navigation */
.nav-link {
    position: relative;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: white;
}

.nav-link.active {
    color: white;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--clr-warm);
    border-radius: 1px;
}

/* Form Styles */
input, select, textarea {
    transition: all 0.3s ease;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border: 2px solid var(--clr-primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
}

/* Animations */
@keyframes spin-slow {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.animate-spin-slow {
    animation: spin-slow 20s linear infinite;
}

/* Toast Notification */
#toast.show {
    transform: translateY(0);
}

#toast.hide {
    transform: translateY(100%);
}

/* Mobile Menu */
#mobile-menu {
    transition: all 0.3s ease;
}

#mobile-menu.show {
    display: block;
}

#mobile-menu.hide {
    display: none;
}

/* Responsive Design Helpers */
@media (max-width: 639px) {
    .container-lg {
        padding: 0 0.75rem;
    }
    
    .btn-primary, .btn-secondary {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
    
    .card {
        padding: 1rem;
    }
}

@media (min-width: 640px) and (max-width: 1023px) {
    .container-lg {
        padding: 0 1.25rem;
    }
}

@media (min-width: 1024px) {
    .container-lg {
        padding: 0 2rem;
    }
}

/* Focus and Accessibility */
*:focus {
    outline: 2px solid var(--clr-secondary);
    outline-offset: 2px;
}

/* Skip to main content link for screen readers */
.skip-to-main {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--clr-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
    border-radius: 4px;
}

.skip-to-main:focus {
    top: 6px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .glass {
        background: rgba(255, 255, 255, 0.9);
        border: 2px solid var(--clr-dark);
    }
    
    .card {
        background: white;
        border: 2px solid var(--clr-dark);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Print styles */
@media print {
    header, footer, #mobile-menu-button, .btn-primary, .btn-secondary {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .section-gradient {
        background: none !important;
        background-color: white !important;
    }
    
    .glass, .card {
        background: white !important;
        border: 1px solid black !important;
        backdrop-filter: none !important;
    }
}