@import url('https://fonts.googleapis.com/css2?family=VT323&display=swap');

html,
body {
    height: 100%;
    width: 100%;
}

:root {
    --term-bg: #0d0208;
    --term-fg: #c0c0c0;
    /* Reverted to Grey */
    --term-cursor: #c0c0c0;
    /* Glow intensity constants */
    --glow-strength: 4px;

    /* Themes */
    --theme-green: #00ff41;
    --theme-amber: #ffb000;
    --theme-blue: #00ffff;
    --theme-red: #ff3333;
}

#matrix-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    /* Place behind everything */
    opacity: 0.15;
    pointer-events: none;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--term-bg);
    color: var(--term-fg);
    font-family: 'VT323', monospace;
    overflow: hidden;
    user-select: none;
    overscroll-behavior: none;

    /* CRT Curvature Effect Container */
    perspective: 1000px;
}

/* CRT Overlay & Scanlines */
body::before {
    content: " ";
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%,
            rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg,
            rgba(255, 0, 0, 0.06),
            rgba(0, 255, 0, 0.02),
            rgba(0, 0, 255, 0.06));
    z-index: 2;
    background-size: 100% 2px, 3px 100%;
    pointer-events: none;
}

body::after {
    content: " ";
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: rgba(18, 16, 16, 0.1);
    opacity: 0;
    z-index: 2;
    pointer-events: none;
    animation: flicker 0.15s infinite;
}

@keyframes flicker {
    0% {
        opacity: 0.027951;
    }

    5% {
        opacity: 0.048283;
    }

    10% {
        opacity: 0.041328;
    }

    15% {
        opacity: 0.035764;
    }

    20% {
        opacity: 0.027003;
    }

    25% {
        opacity: 0.038384;
    }

    30% {
        opacity: 0.034734;
    }

    35% {
        opacity: 0.029051;
    }

    40% {
        opacity: 0.023249;
    }

    45% {
        opacity: 0.038186;
    }

    50% {
        opacity: 0.027549;
    }

    55% {
        opacity: 0.030801;
    }

    60% {
        opacity: 0.030883;
    }

    65% {
        opacity: 0.029804;
    }

    70% {
        opacity: 0.028741;
    }

    75% {
        opacity: 0.029141;
    }

    80% {
        opacity: 0.025354;
    }

    85% {
        opacity: 0.036669;
    }

    90% {
        opacity: 0.029272;
    }

    95% {
        opacity: 0.041303;
    }

    100% {
        opacity: 0.021008;
    }
}

/* Terminal Screen */
.terminal-screen {
    width: 100%;
    height: 100%;
    max-width: 100%;
    padding: 20px;
    font-size: 20px;
    /* Larger font for that DOS feel */
    line-height: 1.5;
    /* Increased for better separation */
    color: var(--term-fg);
    white-space: pre-wrap;
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
    z-index: 1;

    /* Text Glow */
    text-shadow: 0 0 var(--glow-strength) var(--term-fg);
    overscroll-behavior: contain;
}

@media (max-width: 600px) {
    .terminal-screen {
        padding: CALC(10px + env(safe-area-inset-top)) 10px CALC(10px + env(safe-area-inset-bottom)) 10px;
        font-size: 16px;
    }
}

.terminal-screen>div {
    margin-bottom: 4px;
    /* Ensure lines don't overlap even if font metrics differ */
}

/* Vignette for curvature illusion */
#crt-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle, rgba(0, 0, 0, 0) 60%, rgba(0, 0, 0, 0.6) 100%);
    pointer-events: none;
    z-index: 1000;
}

/* Chaos Mode Effects */
@keyframes shake {
    0% {
        transform: translate(1px, 1px) rotate(0deg);
    }

    10% {
        transform: translate(-1px, -2px) rotate(-1deg);
    }

    20% {
        transform: translate(-3px, 0px) rotate(1deg);
    }

    30% {
        transform: translate(3px, 2px) rotate(0deg);
    }

    40% {
        transform: translate(1px, -1px) rotate(1deg);
    }

    50% {
        transform: translate(-1px, 2px) rotate(-1deg);
    }

    60% {
        transform: translate(-3px, 1px) rotate(0deg);
    }

    70% {
        transform: translate(3px, 1px) rotate(-1deg);
    }

    80% {
        transform: translate(-1px, -1px) rotate(1deg);
    }

    90% {
        transform: translate(1px, 2px) rotate(0deg);
    }

    100% {
        transform: translate(1px, -2px) rotate(-1deg);
    }
}

.shake {
    animation: shake 0.5s;
    animation-iteration-count: infinite;
}

.invert {
    filter: invert(100%);
}

/* Scrollbar styling - hidden for more immersion or minimal */
.terminal-screen::-webkit-scrollbar {
    width: 12px;
    background: #000;
}

.terminal-screen::-webkit-scrollbar-thumb {
    background: #444;
    border: 1px solid #000;
}

/* Typewriter Blocks */
.typewriter-output {
    display: inline;
    /* To behave like stream of text */
}

/* Input Line styling */
#active-input-line {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.prompt {
    color: var(--term-fg);
    margin-right: 8px;
    text-shadow: 0 0 5px var(--term-fg);
}

.cursor {
    display: inline-block;
    width: 10px;
    height: 1.2em;
    background-color: var(--term-cursor);
    /* Solid block cursor */
    animation: blink 1s step-end infinite;
    vertical-align: text-bottom;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

/* Table styling for ls/dir */
table {
    border-collapse: collapse;
}

td {
    padding-right: 20px;
}

/* Utilities for coloring text like ANSI codes */
/* Added text-shadow matching the color for glow effect */
.c-white {
    color: #ffffff;
    text-shadow: 0 0 var(--glow-strength) #ffffff;
}

.c-gray {
    color: #c0c0c0;
    text-shadow: 0 0 var(--glow-strength) #c0c0c0;
}

.c-red {
    color: #ff5555;
    text-shadow: 0 0 var(--glow-strength) #ff5555;
}

.c-green {
    color: #55ff55;
    text-shadow: 0 0 var(--glow-strength) #55ff55;
}

.c-blue {
    color: #5555ff;
    text-shadow: 0 0 var(--glow-strength) #5555ff;
}

.c-yellow {
    color: #ffff55;
    text-shadow: 0 0 var(--glow-strength) #ffff55;
}

.c-cyan {
    color: #55ffff;
    text-shadow: 0 0 var(--glow-strength) #55ffff;
}

.c-magenta {
    color: #ff55ff;
    text-shadow: 0 0 var(--glow-strength) #ff55ff;
}

/* Inverted selection style for menu items */
.selected {
    background-color: var(--term-fg);
    color: var(--term-bg);
    text-shadow: none;
}