/* ==========================================
   PANTALLA DE BOOT - TERMINAL LOADING
   ========================================== */

#boot-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--bg-primary);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-family: 'IBM Plex Mono', monospace;
}

#boot-screen.hidden {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

/* ==========================================
   LOADING SEQUENCE - Primera fase
   ========================================== */
.loading-sequence {
    text-align: center;
    width: 80%;
    max-width: 600px;
}

.boot-text {
    font-size: 1.2rem;
    color: var(--terminal-green);
    margin-bottom: 2rem;
    letter-spacing: 2px;
}

.boot-text::after {
    content: '_';
    animation: blink 0.7s step-end infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* ==========================================
   BARRA DE PROGRESO
   ========================================== */
.loading-bar-container {
    width: 100%;
    height: 30px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid var(--terminal-green);
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 1rem;
    position: relative;
}

.loading-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(
        90deg,
        var(--terminal-green) 0%,
        var(--terminal-green-light) 50%,
        var(--terminal-green) 100%
    );
    background-size: 200% 100%;
    transition: width 0.3s ease;
    position: relative;
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.loading-percentage {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-primary);
    font-weight: bold;
    font-size: 0.9rem;
    z-index: 1;
    text-shadow: 0 0 5px rgba(0, 0, 0, 0.8);
}

.loading-message {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 1rem;
    letter-spacing: 1px;
}

.loading-message::after {
    content: '...';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}

/* ==========================================
   COGITO SCREEN - Segunda fase
   ========================================== */
.cogito-screen {
    display: none;
    text-align: center;
    width: 100%;
}

.cogito-screen.active {
    display: block;
    animation: fadeInCogito 0.5s ease;
}

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

.cogito-text {
    font-family: 'Major Mono Display', monospace;
    font-size: clamp(1.8rem, 6vw, 3.5rem);
    color: var(--terminal-green);
    letter-spacing: 3px;
    border-right: 3px solid var(--terminal-green);
    padding-right: 10px;
    display: inline-block;
    white-space: nowrap;
    overflow: hidden;
    text-shadow: 
        0 0 5px var(--terminal-green),
        0 0 10px var(--terminal-green),
        0 0 20px var(--terminal-green);
}

/* Animación del cursor después de escribir */
@keyframes cursorBlink {
    0%, 49% { border-color: var(--terminal-green); }
    50%, 100% { border-color: transparent; }
}

/* ===== RESPONSIVE PARA BOOT SCREEN ===== */
@media (max-width: 768px) {
    .boot-text {
        font-size: 1rem;
        letter-spacing: 1px;
        margin-bottom: 1.5rem;
    }
    
    .loading-sequence {
        width: 90%;
    }
    
    .loading-bar-container {
        height: 25px;
    }
    
    .loading-percentage {
        font-size: 0.8rem;
    }
    
    .loading-message {
        font-size: 0.75rem;
    }
    
    .cogito-text {
        font-size: 1.3rem;
        letter-spacing: 2px;
        padding-right: 5px;
        border-right-width: 2px;
    }
}

@media (max-width: 480px) {
    .boot-text {
        font-size: 0.85rem;
    }
    
    .loading-bar-container {
        height: 20px;
    }
    
    .cogito-text {
        font-size: 1rem;
        letter-spacing: 1px;
    }
}