/* 
 * ══════════════════════════════════════════════════════════════════════════════
 * HAC ACCESS - Boot Screen Styles
 * ══════════════════════════════════════════════════════════════════════════════
 * Terminal-style boot log + title screen animation (SAM/eDEX-UI aesthetic)
 */

/* ═══════════════════════════════════════════════════════════════════════════════
 * BOOT SCREEN CONTAINER
 * ═══════════════════════════════════════════════════════════════════════════════ */
section#boot_screen {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    padding: 3vh 4vw;
    overflow: hidden;
    z-index: 2000;

    /* Typography - LARGER terminal font */
    font-family: var(--font_mono, 'Fira Mono', 'SF Mono', 'Consolas', monospace);
    font-size: clamp(14px, 1.8vh, 20px);
    line-height: 1.6;
    letter-spacing: 0.03em;
    text-align: left;
    
    /* Terminal GREEN color */
    color: var(--terminal-green, #00ff41);
    
    /* Layout - align to bottom-left like a real terminal */
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-end;
    
    /* Phosphor glow effect - GREEN */
    text-shadow: 
        0 0 2px var(--terminal-green, #00ff41),
        0 0 8px var(--terminal-green-glow, rgba(0, 255, 65, 0.4)),
        0 0 15px var(--terminal-green-glow, rgba(0, 255, 65, 0.2));
    
    /* GPU acceleration for smooth scrolling */
    transform: translateZ(0);
    will-change: transform, opacity;
    
    /* Background during boot */
    background: var(--color_light_black, #05080d);
}

/* Boot log content wrapper */
section#boot_screen > .boot-content {
    max-height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 1vw;
}

/* Centered mode for title screen */
section#boot_screen.center {
    align-items: center;
    justify-content: center;
    padding: 0;
    text-shadow: none;
    background: transparent;
}

/* ═══════════════════════════════════════════════════════════════════════════════
 * BOOT LOG LINE ANIMATIONS
 * ═══════════════════════════════════════════════════════════════════════════════ */

/* Blinking cursor at end of boot log */
section#boot_screen::after {
    content: '█';
    display: inline-block;
    margin-left: 0.3em;
    animation: cursorBlink 1s step-end infinite;
    opacity: 0.8;
}

section#boot_screen.center::after {
    display: none;
}

@keyframes cursorBlink {
    0%, 50% { opacity: 0.8; }
    51%, 100% { opacity: 0; }
}

/* Individual line animation */
section#boot_screen .line {
    animation: lineReveal 0.1s ease-out forwards;
    opacity: 0;
}

@keyframes lineReveal {
    from { 
        opacity: 0;
        transform: translateX(-5px);
    }
    to { 
        opacity: 1;
        transform: translateX(0);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════════
 * TITLE SCREEN - Main Logo
 * ═══════════════════════════════════════════════════════════════════════════════ */
section#boot_screen h1 {
    /* Bai Jamjuree Bold */
    font-family: var(--font_title, 'Bai Jamjuree'), "United Sans Medium", sans-serif;
    font-size: clamp(60px, 14vh, 180px);
    font-weight: 700;
    letter-spacing: 0.18em;
    text-align: center;
    text-transform: uppercase;
    
    /* Primary accent color for title */
    color: rgb(var(--color_r), var(--color_g), var(--color_b));
    
    /* Underline accent */
    border-bottom: 0.6vh solid rgb(var(--color_r), var(--color_g), var(--color_b));
    padding: 2.5vh 4vh 2vh;
    background-color: transparent;
    
    /* Override green text shadow from boot screen */
    text-shadow: none;
    
    /* Initial state */
    opacity: 0;
    
    /* Smooth transitions */
    transition: 
        background-color 0.15s ease-out,
        border 0.15s ease-out,
        box-shadow 0.3s ease-out;
    
    /* Entrance animation */
    animation: fadeInTitle 0.4s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    
    /* GPU acceleration */
    transform: translateZ(0);
    will-change: opacity, transform;
}

@keyframes fadeInTitle {
    from { 
        opacity: 0;
        transform: translateY(10px) translateZ(0);
    }
    to { 
        opacity: 1;
        transform: translateY(0) translateZ(0);
    }
}

/* Title with glow effect */
section#boot_screen h1.glow-active {
    text-shadow: 
        0 0 5px rgba(var(--color_r), var(--color_g), var(--color_b), 0.9),
        0 0 20px rgba(var(--color_r), var(--color_g), var(--color_b), 0.6),
        0 0 40px rgba(var(--color_r), var(--color_g), var(--color_b), 0.3);
    box-shadow: 
        0 0 30px rgba(var(--color_r), var(--color_g), var(--color_b), 0.2),
        inset 0 0 20px rgba(var(--color_r), var(--color_g), var(--color_b), 0.1);
}

/* ═══════════════════════════════════════════════════════════════════════════════
 * GLITCH EFFECT - Advanced Cyberpunk Style
 * ═══════════════════════════════════════════════════════════════════════════════ */
section#boot_screen h1.glitch {
    border: none;
    color: transparent;
    position: relative;
    animation: glitchMain 0.3s ease-in-out infinite;
}

@keyframes glitchMain {
    0%, 100% { transform: translateX(0) translateZ(0); filter: none; }
    7% { transform: translateX(-3px) skewX(-0.5deg); }
    10% { transform: translateX(3px) skewX(0.5deg); }
    13% { transform: translateX(-2px); filter: hue-rotate(90deg); }
    20% { transform: translateX(2px) skewX(-0.3deg); }
    27% { transform: translateX(-1px); }
    30% { transform: translateX(1px) skewX(0.2deg); }
    40% { transform: translateX(0); filter: none; }
}

/* Top glitch slice - Red/Cyan chromatic */
section#boot_screen h1::before {
    content: var(--app_name, "HAC");
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    
    /* Slice positioning */
    transform: translateY(0) translateX(-2%);
    clip-path: polygon(0% 0%, 100% 0%, 100% 45%, 0% 45%);
    color: rgba(var(--color_r), var(--color_g), var(--color_b), 0.9);
    
    /* Animation */
    animation-name: derezzer_top;
    animation-duration: 45ms;
    animation-timing-function: steps(2, end);
    animation-iteration-count: infinite;
    animation-direction: alternate-reverse;
    animation-play-state: paused;
    
    /* Hidden by default */
    opacity: 0;
    pointer-events: none;
    
    /* Chromatic aberration */
    text-shadow: -3px 0 #ff0040, 3px 0 #00ffff;
}

section#boot_screen h1.glitch::before {
    opacity: 1;
    animation-play-state: running;
}

@keyframes derezzer_top {
    0% { transform: translateY(0) translateX(-1%); clip-path: polygon(0% 0%, 100% 0%, 100% 48%, 0% 42%); }
    20% { transform: translateY(-1px) translateX(-4%); clip-path: polygon(0% 0%, 100% 0%, 100% 44%, 0% 46%); }
    40% { transform: translateY(0) translateX(-2%); clip-path: polygon(0% 0%, 100% 0%, 100% 50%, 0% 40%); }
    60% { transform: translateY(1px) translateX(-5%); clip-path: polygon(0% 0%, 100% 0%, 100% 42%, 0% 48%); }
    80% { transform: translateY(-1px) translateX(-3%); clip-path: polygon(0% 0%, 100% 0%, 100% 46%, 0% 44%); }
    100% { transform: translateY(0) translateX(-6%); clip-path: polygon(0% 0%, 100% 0%, 100% 45%, 0% 45%); }
}

/* Bottom glitch slice */
section#boot_screen h1::after {
    content: var(--app_name, "HAC");
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    
    /* Slice positioning */
    transform: translateY(0) translateX(2%);
    clip-path: polygon(0% 45%, 100% 45%, 100% 100%, 0% 100%);
    color: rgba(var(--color_r), var(--color_g), var(--color_b), 0.95);
    
    /* Animation */
    animation-name: derezzer_bottom;
    animation-duration: 35ms;
    animation-timing-function: steps(3, end);
    animation-iteration-count: infinite;
    animation-direction: alternate-reverse;
    animation-play-state: paused;
    
    /* Hidden by default */
    opacity: 0;
    pointer-events: none;
    
    /* Chromatic aberration */
    text-shadow: 3px 0 #ff0040, -3px 0 #00ffff;
}

section#boot_screen h1.glitch::after {
    opacity: 1;
    animation-play-state: running;
}

@keyframes derezzer_bottom {
    0% { transform: translateY(0) translateX(1%); clip-path: polygon(0% 52%, 100% 48%, 100% 100%, 0% 100%); }
    16% { transform: translateY(1px) translateX(3%); clip-path: polygon(0% 46%, 100% 54%, 100% 100%, 0% 100%); }
    33% { transform: translateY(-1px) translateX(5%); clip-path: polygon(0% 50%, 100% 50%, 100% 100%, 0% 100%); }
    50% { transform: translateY(0) translateX(2%); clip-path: polygon(0% 54%, 100% 46%, 100% 100%, 0% 100%); }
    66% { transform: translateY(1px) translateX(4%); clip-path: polygon(0% 48%, 100% 52%, 100% 100%, 0% 100%); }
    83% { transform: translateY(-1px) translateX(6%); clip-path: polygon(0% 45%, 100% 55%, 100% 100%, 0% 100%); }
    100% { transform: translateY(0) translateX(3%); clip-path: polygon(0% 45%, 100% 45%, 100% 100%, 0% 100%); }
}

/* Additional noise/scanline overlay during glitch */
section#boot_screen h1.glitch::before,
section#boot_screen h1.glitch::after {
    mix-blend-mode: screen;
}

/* ═══════════════════════════════════════════════════════════════════════════════
 * SYSTEM READY STATE
 * ═══════════════════════════════════════════════════════════════════════════════ */
section#boot_screen h1.ready {
    animation: readyPulse 2s ease-in-out infinite;
}

@keyframes readyPulse {
    0%, 100% {
        box-shadow: 
            0 0 10px rgba(var(--color_r), var(--color_g), var(--color_b), 0.2),
            inset 0 0 10px rgba(var(--color_r), var(--color_g), var(--color_b), 0.05);
    }
    50% {
        box-shadow: 
            0 0 30px rgba(var(--color_r), var(--color_g), var(--color_b), 0.4),
            inset 0 0 20px rgba(var(--color_r), var(--color_g), var(--color_b), 0.1);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════════
 * FADE OUT ANIMATION
 * ═══════════════════════════════════════════════════════════════════════════════ */
section#boot_screen.fade-out {
    animation: bootFadeOut 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes bootFadeOut {
    0% { 
        opacity: 1;
        transform: scale(1);
    }
    100% { 
        opacity: 0;
        transform: scale(1.02);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════════
 * RESPONSIVE ADJUSTMENTS
 * ═══════════════════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
    section#boot_screen {
        font-size: clamp(8px, 2vh, 12px);
        padding: 1.5vh 3vw;
    }
    
    section#boot_screen h1 {
        font-size: clamp(32px, 8vh, 60px);
        letter-spacing: 0.1em;
        padding: 1.5vh 2vh 1vh;
    }
}

@media (max-width: 480px) {
    section#boot_screen h1 {
        font-size: clamp(24px, 7vh, 48px);
    }
}

/* High DPI / Retina displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    section#boot_screen {
        text-shadow: 
            0 0 0.5px rgba(var(--color_r), var(--color_g), var(--color_b), 0.6),
            0 0 2px rgba(var(--color_r), var(--color_g), var(--color_b), 0.2);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════════
 * REDUCED MOTION - Accessibility
 * ═══════════════════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
    section#boot_screen h1,
    section#boot_screen h1::before,
    section#boot_screen h1::after,
    section#boot_screen::after {
        animation: none !important;
    }
    
    section#boot_screen h1.glitch::before,
    section#boot_screen h1.glitch::after {
        animation: none !important;
        transform: none;
        clip-path: none;
        opacity: 0 !important;
    }
    
    section#boot_screen h1.glitch {
        color: rgb(var(--color_r), var(--color_g), var(--color_b));
    }
    
    section#boot_screen h1 {
        opacity: 1;
    }
}