:root {
    --primary-color: #22a7d0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
}

.hero-bg {
    background-color: #f8f9fa;
    background-image:
        radial-gradient(circle at 1px 1px, rgba(0,0,0,0.05) 1px, transparent 0),
        radial-gradient(circle at 10px 10px, rgba(0,0,0,0.05) 1px, transparent 0);
    background-size: 20px 20px;
}

.cta-button {
    transition: all 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(34, 167, 208, 0.3);
}

.section-title {
    font-weight: 900;
    color: #1a202c;
}

/* Animación del Logo */
.logo-icon {
    width: 40px;
    height: 40px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon::before {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    background: transparent;
    z-index: 4;
}

.logo-icon::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    border-top-color: transparent;
    border-right-color: transparent;
    animation: spin-inner 2s linear infinite;
    z-index: 3;
}

.logo-icon .arc-1 {
    position: absolute;
    width: 26px;
    height: 26px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    border-top-color: transparent;
    border-right-color: transparent;
    border-bottom-color: transparent;
    animation: spin-middle 3s linear infinite reverse;
    z-index: 2;
}

.logo-icon .arc-2 {
    position: absolute;
    width: 34px;
    height: 34px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    border-top-color: transparent;
    border-left-color: transparent;
    animation: spin-outer 4s linear infinite;
    z-index: 1;
}

@keyframes spin-inner {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes spin-middle {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes spin-outer {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Estilo de Selección del Header */
.nav-link {
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(0);
    border-radius: 6px;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    top: 0;
    right: 0;
    background-color: var(--primary-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 6px;
    opacity: 0;
    z-index: -1;
}

.nav-link:hover::after, .nav-link.active::after {
    opacity: 1;
}

.nav-link:hover {
    color: #1f2937 !important;
    transform: translateY(-1px);
}

.nav-link.active {
    color: #1f2937 !important;
    font-weight: 600;
}

.star-rating svg {
    color: #f59e0b;
}

/* Smooth Page Loading */
main {
    opacity: 0;
    transform: scale(0.95);
    animation: zoomIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Enhanced Header Backdrop */
.dark-header {
    transition: all 0.3s ease;
}

/* Language Dropdown Smooth Animation */
#language-menu {
    opacity: 0;
    transform: translateY(-10px) scale(0.95);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: top right;
}

#language-menu:not(.hidden) {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Smooth Button Interactions */
button, .cta-button {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

button:hover, .cta-button:hover {
    transform: translateY(-2px);
}

button:active, .cta-button:active {
    transform: translateY(0);
    transition-duration: 0.1s;
}

/* Form Styles */
input[type="text"], input[type="email"], input[type="password"] {
    transition: all 0.3s ease;
}

input[type="text"]:focus, input[type="email"]:focus, input[type="password"]:focus {
    box-shadow: 0 0 0 3px rgba(34, 167, 208, 0.1);
}

input[type="checkbox"] {
    accent-color: var(--primary-color);
}

/* Registration Form Animation */
#registerForm {
    animation: slideInUp 0.6s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}