/* Terminal Reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --term-green: #00ff00;
    --term-dark: #000000;
    --term-glow: 0 0 10px rgba(0, 255, 0, 0.7);
    --term-text-shadow: 0 0 5px rgba(0, 255, 0, 0.5);
    --scan-line-color: rgba(0, 255, 0, 0.1);
}

body {
    background-color: var(--term-dark);
    color: var(--term-green);
    font-family: 'Courier New', Courier, monospace;
    line-height: 1.5;
    padding: 20px;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    text-shadow: var(--term-text-shadow);
}

/* CRT Scanline Effect */
body::before {
    content: " ";
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(to bottom,
            rgba(18, 16, 16, 0) 50%,
            rgba(0, 0, 0, 0.25) 50%);
    background-size: 100% 4px;
    z-index: 100;
    pointer-events: none;
}

/* Screen Flicker/Glow Animation */
@keyframes flicker {
    0% {
        opacity: 0.97;
    }

    5% {
        opacity: 0.95;
    }

    10% {
        opacity: 0.9;
    }

    15% {
        opacity: 0.95;
    }

    20% {
        opacity: 0.99;
    }

    25% {
        opacity: 0.95;
    }

    30% {
        opacity: 0.9;
    }

    35% {
        opacity: 0.96;
    }

    40% {
        opacity: 0.98;
    }

    45% {
        opacity: 0.95;
    }

    50% {
        opacity: 0.99;
    }

    55% {
        opacity: 0.93;
    }

    60% {
        opacity: 0.9;
    }

    65% {
        opacity: 0.96;
    }

    70% {
        opacity: 1;
    }

    75% {
        opacity: 0.97;
    }

    80% {
        opacity: 0.95;
    }

    85% {
        opacity: 0.92;
    }

    90% {
        opacity: 0.98;
    }

    95% {
        opacity: 0.99;
    }

    100% {
        opacity: 0.94;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 1;
    animation: flicker 0.15s infinite;
    /* Subtle flicker */
}

header {
    margin-bottom: 40px;
    border-bottom: 2px dashed var(--term-green);
    padding-bottom: 10px;
}

h1 {
    font-size: 3rem;
    text-transform: uppercase;
    letter-spacing: -2px;
    font-weight: bold;
    color: #E6C200;
    text-shadow: 0 0 10px rgba(230, 194, 0, 0.7);
}

h1::before {
    content: "> ";
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    align-items: start;
}

/* Controls */
.controls {
    display: flex;
    flex-direction: column;
    gap: 20px;
    border: 1px solid var(--term-green);
    padding: 20px;
    box-shadow: var(--term-glow);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

label {
    font-weight: bold;
    text-transform: uppercase;
    font-size: 1.2rem;
    color: var(--term-green);
    width: fit-content;
}

input[type="text"] {
    background-color: #000;
    border: 1px solid var(--term-green);
    color: #fff;
    padding: 15px;
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    box-shadow: none;
    text-shadow: none;
}

input[type="text"]:focus {
    background-color: #111;
    box-shadow: inset 0 0 10px var(--term-green);
}

input[type="text"]::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

/* File Input Styling */
input[type="file"] {
    display: none;
}

.file-label {
    cursor: pointer;
    border: 1px solid var(--term-green);
    padding: 15px;
    text-align: center;
    background: #000;
    color: #fff;
    display: block;
    width: 100%;
    transition: all 0.2s;
    text-shadow: none;
}

.file-label:hover {
    background: #fff;
    color: #000;
    box-shadow: var(--term-glow);
}

button {
    background: #000;
    color: #fff;
    border: 1px solid var(--term-green);
    padding: 20px;
    font-family: inherit;
    font-size: 1.5rem;
    font-weight: bold;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s;
    text-shadow: none;
}

button:hover {
    background: #fff;
    color: #000;
    box-shadow: var(--term-glow);
    text-shadow: none;
}

/* Preview Area */
.preview-area {
    border: 1px solid var(--term-green);
    min-height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #000;
    box-shadow: var(--term-glow);
    position: relative;
}

/* Retro Grid Background for empty state */
.preview-area {
    background-image:
        linear-gradient(var(--scan-line-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--scan-line-color) 1px, transparent 1px);
    background-size: 20px 20px;
}

canvas {
    max-width: 100%;
    max-height: 80vh;
    border: 1px dashed var(--term-green);
    display: none;
    /* Hidden until image loaded */
    image-rendering: pixelated;
    /* Adds to retro vibe */
}

#placeholder-text {
    font-size: 2rem;
    font-weight: bold;
    text-transform: uppercase;
    color: #fff;
    text-align: center;
    padding: 20px;
    border: 1px dotted var(--term-green);
    animation: blink 1s step-end infinite;
    text-shadow: 0 0 5px #fff;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 2rem;
    }
}

/* Footer */
footer {
    margin-top: 40px;
    text-align: center;
    color: var(--term-green);
    font-size: 0.8rem;
    text-shadow: var(--term-text-shadow);
    border-top: 1px dashed var(--term-green);
    padding-top: 20px;
    opacity: 0.8;
}