/* ============================================
   FRONTERA VISUAL - Estilos Principales
   ============================================ */

/* CSS Variables */
:root {
    --color-bg: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-text: #ffffff;
    --color-text-muted: rgba(255, 255, 255, 0.5);
    --color-text-subtle: rgba(255, 255, 255, 0.3);
    --color-accent: #e8e4dc;
    --color-line: rgba(255, 255, 255, 0.15);
    
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    cursor: none;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Custom Cursor */
.cursor-follower {
    width: 20px;
    height: 20px;
    border: 1px solid var(--color-text);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.2s, height 0.2s, border-color 0.2s;
    mix-blend-mode: difference;
}

.cursor-follower.hover {
    width: 50px;
    height: 50px;
    border-color: var(--color-accent);
}

/* Links & Interactive */
a {
    color: var(--color-text);
    text-decoration: none;
    cursor: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent);
}

/* ============================================
   HEADER
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    mix-blend-mode: difference;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.logo-text {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--color-text);
}

.logo-tm {
    font-size: 0.6rem;
    font-weight: 400;
    color: var(--color-text);
    vertical-align: super;
}

.nav {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    position: relative;
    padding-bottom: 2px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-text);
    transition: width var(--transition-medium);
}

.nav-link:hover {
    color: var(--color-text);
}

.nav-link:hover::after {
    width: 100%;
}

/* ============================================
   MAIN / HERO
   ============================================ */
.main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero {
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.hero-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

/* Asterisk Symbol */
.asterisk-container {
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: rotateAsterisk 30s linear infinite;
}

.asterisk {
    width: 100%;
    height: 100%;
    color: var(--color-text-subtle);
    transition: color var(--transition-medium);
}

.asterisk-container:hover .asterisk {
    color: var(--color-text);
}

@keyframes rotateAsterisk {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Tagline */
.tagline {
    font-size: clamp(0.7rem, 1.2vw, 0.9rem);
    font-weight: 400;
    letter-spacing: 0.35em;
    line-height: 2.2;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.tagline-line {
    display: block;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.tagline-line:nth-child(1) {
    animation-delay: 0.3s;
}

.tagline-line:nth-child(2) {
    animation-delay: 0.5s;
}

.tagline-line:nth-child(3) {
    animation-delay: 0.7s;
}

.tagline-line.highlight {
    color: var(--color-text);
    font-weight: 500;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--color-line);
}

.footer-text {
    font-size: 0.7rem;
    font-weight: 300;
    letter-spacing: 0.1em;
    color: var(--color-text-subtle);
    text-transform: uppercase;
}

.footer-email {
    font-size: 0.7rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-email:hover {
    color: var(--color-text);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .logo-text {
        font-size: 0.75rem;
    }
    
    .hero {
        padding: var(--spacing-md);
    }
    
    .asterisk-container {
        width: 80px;
        height: 80px;
    }
    
    .tagline {
        font-size: 0.65rem;
        letter-spacing: 0.25em;
    }
    
    .footer {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-md);
        text-align: center;
    }
    
    /* Mobile cursor */
    .cursor-follower {
        display: none;
    }
    
    body {
        cursor: auto;
    }
    
    a {
        cursor: pointer;
    }
}

@media (max-width: 480px) {
    .header {
        padding: var(--spacing-sm);
    }
    
    .logo-text {
        font-size: 0.65rem;
        letter-spacing: 0.1em;
    }
    
    .nav-link {
        font-size: 0.65rem;
    }
    
    .tagline {
        font-size: 0.55rem;
        letter-spacing: 0.2em;
        line-height: 2.5;
    }
    
    .asterisk-container {
        width: 60px;
        height: 60px;
    }
}

/* ============================================
   LOADING ANIMATION
   ============================================ */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.5s, visibility 0.5s;
}

.loading.hidden {
    opacity: 0;
    visibility: hidden;
}

/* ============================================
   NOISE TEXTURE OVERLAY
   ============================================ */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: 1000;
}