/* ==========================================================================
   TERMINAL INTRO // ULTRA-CRT RETRO EXPERIENCE
   Encendido de tubo, haz de electrones, curvatura de cristal, scanlines, 
   resplandor de fosforo, aberracion cromatica y colapso CRT al cargar
   (Cero emojis)
   ========================================================================== */

/* Capa completa del monitor CRT */
.intro-terminal-overlay {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    z-index: 10000000;
    background: #020202;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2vh 2.5vw;
    box-sizing: border-box;
    overflow: hidden;
    font-family: 'JetBrains Mono', 'Consolas', 'Courier New', monospace;
    /* Animacion de encendido inicial del tubo catodico */
    animation: crtWarmUp 0.65s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

/* Animacion clasica de encendido de tubo CRT */
@keyframes crtWarmUp {
    0% {
        transform: scale(1, 0.003);
        filter: brightness(25);
        opacity: 0.9;
    }
    40% {
        transform: scale(1, 0.008);
        filter: brightness(15);
    }
    75% {
        transform: scale(1.02, 1.05);
        filter: brightness(2.2);
    }
    100% {
        transform: scale(1, 1);
        filter: brightness(1);
        opacity: 1;
    }
}

/* Colapso clasico al apagarse / entrar a la web */
.intro-terminal-overlay.crt-turn-off {
    animation: crtShutDown 0.65s cubic-bezier(0.23, 1, 0.32, 1) forwards !important;
}

@keyframes crtShutDown {
    0% {
        transform: scale(1, 1);
        filter: brightness(1);
        opacity: 1;
    }
    45% {
        transform: scale(1, 0.004);
        filter: brightness(20);
        background: #ffffff;
        opacity: 1;
    }
    85% {
        transform: scale(0.004, 0.004);
        filter: brightness(35);
        background: #ffffff;
        opacity: 1;
    }
    100% {
        transform: scale(0, 0);
        opacity: 0;
        pointer-events: none;
    }
}

/* Marco exterior y curvatura convexa del cristal del tubo (Ojo de Pez) */
.intro-crt-bezel {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 100;
    box-shadow: 
        inset 0 0 0 12px #0a0a0d,
        inset 0 0 0 18px #18181e,
        inset 0 0 80px rgba(0, 0, 0, 0.96),
        inset 0 0 150px rgba(0, 0, 0, 0.9);
    border-radius: 40px / 30px;
}

/* Lente de cristal con reflejo oblicuo y viñeta de tubo esferico */
.intro-crt-glass {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 95;
    background: 
        radial-gradient(ellipse at 50% 50%, transparent 50%, rgba(0, 0, 0, 0.55) 78%, rgba(0, 0, 0, 0.95) 98%, #000000 100%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.015) 22%, transparent 45%);
}

/* Lineas de escaneo horizontales continuas y mascara de fosforo RGB */
.intro-crt-scanlines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 90;
    background: 
        linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.4) 50%),
        linear-gradient(90deg, rgba(255, 0, 0, 0.04), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.04));
    background-size: 100% 3px, 6px 100%;
}

/* Haz de barrido vertical (Electron Beam sweep) */
.intro-crt-beam {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 90px;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.08), transparent);
    pointer-events: none;
    z-index: 92;
    animation: crtBeamRoll 4.8s linear infinite;
}

@keyframes crtBeamRoll {
    0% { transform: translateY(-100px); }
    100% { transform: translateY(100vh); }
}

/* Parpadeo continuo de 60Hz caracteristico de monitor CRT */
@keyframes crtFlicker60 {
    0% { opacity: 0.975; }
    20% { opacity: 1; }
    45% { opacity: 0.96; }
    60% { opacity: 0.99; }
    85% { opacity: 0.97; }
    100% { opacity: 1; }
}

.intro-crt-tube-content {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 920px;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: crtFlicker60 0.14s infinite;
}

/* ==========================================================================
   FASE 1: TERMINAL VERDE FOSFORO (P1 / P39 PHOSPHOR)
   ========================================================================== */
.intro-terminal-overlay.phase-green {
    background: radial-gradient(ellipse at 50% 50%, #031407 0%, #010803 65%, #000000 100%);
    color: #33ff33;
}

.intro-terminal-overlay.phase-green .intro-log-line {
    color: #33ff33;
    /* Resplandor de fosforo verde intenso con aberracion cromatica */
    text-shadow: 
        0 0 3px #00ff66,
        0 0 8px rgba(0, 255, 102, 0.8),
        0 0 16px rgba(0, 255, 102, 0.4),
        -1px 0 rgba(0, 255, 0, 0.6),
        1px 0 rgba(0, 200, 255, 0.4);
}

/* ==========================================================================
   FASE 2 Y 3: COLOR BURDEOS Y RESPLANDOR CARMESI PROFUNDO
   ========================================================================== */
.intro-terminal-overlay.phase-burgundy {
    background: radial-gradient(ellipse at 50% 50%, #2b040c 0%, #160105 65%, #040001 100%);
    color: #ff3355;
    /* Breve sacudida de sincronia vertical al inyectar */
    animation: crtGlitchShift 0.25s ease-out;
}

@keyframes crtGlitchShift {
    0% { transform: translate(0, 0); filter: hue-rotate(90deg) brightness(2); }
    20% { transform: translate(-6px, 3px); }
    40% { transform: translate(6px, -3px); filter: contrast(180%); }
    60% { transform: translate(-3px, -1px); }
    100% { transform: translate(0, 0); filter: none; }
}

.intro-terminal-overlay.phase-burgundy .intro-log-line {
    color: #ff3355;
    /* Resplandor burdeos profundo con aberracion cromatica roja/azul */
    text-shadow: 
        0 0 4px #ff2255,
        0 0 12px rgba(255, 34, 85, 0.85),
        0 0 24px rgba(180, 0, 40, 0.5),
        -1.5px 0 rgba(255, 0, 50, 0.7),
        1.5px 0 rgba(255, 0, 200, 0.4);
}

/* Caja de consola de texto */
.intro-console-box {
    width: 100%;
    max-height: 82vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 0 12px;
    box-sizing: border-box;
}

.intro-log-line {
    font-size: clamp(0.72rem, 1.45vh, 0.92rem);
    line-height: 1.5;
    margin: 2px 0;
    white-space: pre-wrap;
    word-break: break-all;
    font-weight: 600;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
}

.intro-spider-subtitle {
    font-size: clamp(0.7rem, 1.2vh, 0.85rem);
    font-weight: 700;
    color: #ff8899;
    text-shadow: 0 0 6px #ff2244;
    margin-bottom: 3px;
    letter-spacing: 1px;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
}

.intro-log-line.alert-red {
    color: #ff1744 !important;
    background: rgba(255, 23, 68, 0.2);
    padding: 2px 10px;
    border-left: 5px solid #ff1744;
}

.intro-log-line.glitch-flash {
    animation: introGlitch 0.15s ease-in-out infinite;
}

@keyframes introGlitch {
    0% { transform: translateX(0); }
    50% { transform: translateX(-4px); color: #ffffff; }
    100% { transform: translateX(4px); }
}

/* Barra de progreso de la inyeccion */
.intro-progress-wrap {
    width: 100%;
    margin-top: 10px;
    font-size: 1.15rem;
    font-weight: 800;
    color: #ff3355;
    text-shadow: 0 0 8px #ff2255;
}

/* ==========================================================================
   FASE 3: QUIMERA ASCII RETRO CRT
   ========================================================================== */
.intro-spider-container {
    display: none;
    position: relative;
    z-index: 10;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    animation: introSpiderAppear 0.35s ease-out forwards;
}

@keyframes introSpiderAppear {
    0% { transform: scale(0.94); filter: brightness(3) contrast(200%); opacity: 0; }
    60% { transform: scale(1.02); filter: brightness(1.5); }
    100% { transform: scale(1); filter: brightness(1); opacity: 1; }
}

.intro-spider-title {
    font-size: clamp(0.9rem, 1.8vh, 1.25rem);
    font-weight: 900;
    color: #ff2244;
    text-shadow: 0 0 8px #ff2244, 0 0 16px rgba(255, 34, 68, 0.7);
    margin-bottom: 4px;
    letter-spacing: 1.5px;
    text-align: center;
    text-transform: uppercase;
}

.intro-spider-pre {
    font-family: 'Courier New', monospace;
    font-size: clamp(3px, 0.72vh, 8.5px);
    line-height: clamp(3px, 0.72vh, 8.5px);
    letter-spacing: -0.5px;
    white-space: pre;
    color: #ff3355;
    text-shadow: 
        0 0 4px #ff2255,
        0 0 10px rgba(255, 34, 85, 0.8),
        -1px 0 rgba(255, 0, 50, 0.5),
        1px 0 rgba(255, 0, 200, 0.3);
    margin: 0;
    padding: 0;
    user-select: none;
}

.intro-spider-footer {
    font-size: clamp(0.85rem, 1.6vh, 1.15rem);
    font-weight: 800;
    color: #ffffff;
    background: #800020;
    border: 2px solid #ff3355;
    padding: 6px 18px;
    margin-top: 8px;
    text-shadow: none;
    letter-spacing: 0.5px;
    text-align: center;
    box-shadow: 0 0 25px rgba(128, 0, 32, 0.9);
}

/* Boton para saltar la intro */
.intro-skip-btn {
    position: absolute;
    top: 1.2rem;
    right: 1.5rem;
    z-index: 120;
    background: rgba(10, 10, 15, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: #bbbbbb;
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 14px;
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: 4px;
}

.intro-skip-btn:hover {
    background: #ff2244;
    color: #ffffff;
    border-color: #ff2244;
    box-shadow: 0 0 12px #ff2244;
}

/* ==========================================================================
   RESPONSIVE: moviles y pantallas estrechas
   ========================================================================== */
@media (max-width: 640px) {
    .intro-console-box { padding: 0 8px; max-height: 76vh; }
    .intro-log-line { font-size: 0.7rem; }
    .intro-spider-pre { font-size: 2.4px; line-height: 2.4px; max-width: 100%; overflow: hidden; }
    .intro-spider-footer { font-size: 0.75rem; padding: 6px 10px; }
    .intro-skip-btn { top: 0.6rem; right: 0.6rem; font-size: 0.7rem; padding: 6px 10px; }
}

@media (prefers-reduced-motion: reduce) {
    .intro-crt-tube-content { animation: none; }
}