/* Retro Terminal Theme - 16-bit Style */
@import url('https://fonts.googleapis.com/css2?family=VT323&family=Share+Tech+Mono&display=swap');

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

:root {
    --terminal-green: #00ff00;
    --terminal-dark-green: #00aa00;
    --terminal-bg: #000000;
    --terminal-light-green: #88ff88;
    --terminal-glow: rgba(0, 255, 0, 0.5);
}

body {
    font-family: 'VT323', monospace;
    background: var(--terminal-bg);
    min-height: 100vh;
    padding: 20px;
    color: var(--terminal-green);
    position: relative;
    overflow-x: hidden;
}

/* CRT Screen Effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(18, 16, 16, 0) 50%,
        rgba(0, 0, 0, 0.25) 50%
    );
    background-size: 100% 4px;
    z-index: 9999;
    pointer-events: none;
    animation: scanline 8s linear infinite;
}

/* Scanline animation */
@keyframes scanline {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 0 100%;
    }
}

/* Screen flicker */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(18, 16, 16, 0.1);
    opacity: 0;
    z-index: 9998;
    pointer-events: none;
    animation: flicker 0.15s infinite;
}

@keyframes flicker {
    0% {
        opacity: 0.27861;
    }
    5% {
        opacity: 0.34769;
    }
    10% {
        opacity: 0.23604;
    }
    15% {
        opacity: 0.90626;
    }
    20% {
        opacity: 0.18128;
    }
    25% {
        opacity: 0.83891;
    }
    30% {
        opacity: 0.65583;
    }
    35% {
        opacity: 0.67807;
    }
    40% {
        opacity: 0.26559;
    }
    45% {
        opacity: 0.84693;
    }
    50% {
        opacity: 0.96019;
    }
    55% {
        opacity: 0.08594;
    }
    60% {
        opacity: 0.20313;
    }
    65% {
        opacity: 0.71988;
    }
    70% {
        opacity: 0.53455;
    }
    75% {
        opacity: 0.37288;
    }
    80% {
        opacity: 0.71428;
    }
    85% {
        opacity: 0.70419;
    }
    90% {
        opacity: 0.7003;
    }
    95% {
        opacity: 0.36108;
    }
    100% {
        opacity: 0.24387;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* ASCII Art Header */
header {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px;
    border: 2px solid var(--terminal-green);
    background: rgba(0, 255, 0, 0.05);
    box-shadow:
        0 0 10px var(--terminal-glow),
        inset 0 0 10px var(--terminal-glow);
    animation: borderGlow 2s ease-in-out infinite alternate;
}

@keyframes borderGlow {
    from {
        box-shadow:
            0 0 10px var(--terminal-glow),
            inset 0 0 10px var(--terminal-glow);
    }
    to {
        box-shadow:
            0 0 20px var(--terminal-glow),
            inset 0 0 20px var(--terminal-glow);
    }
}

header h1 {
    font-family: 'VT323', monospace;
    font-size: 4rem;
    color: var(--terminal-green);
    text-shadow:
        0 0 10px var(--terminal-green),
        0 0 20px var(--terminal-green),
        0 0 30px var(--terminal-green);
    letter-spacing: 5px;
    animation: textGlow 1.5s ease-in-out infinite alternate;
}

@keyframes textGlow {
    from {
        text-shadow:
            0 0 10px var(--terminal-green),
            0 0 20px var(--terminal-green),
            0 0 30px var(--terminal-green);
    }
    to {
        text-shadow:
            0 0 20px var(--terminal-green),
            0 0 30px var(--terminal-green),
            0 0 40px var(--terminal-green);
    }
}

.subtitle {
    font-size: 1.5rem;
    color: var(--terminal-dark-green);
    margin-top: 10px;
    font-family: 'Share Tech Mono', monospace;
}

/* Terminal prompt style */
.subtitle::before {
    content: '> ';
    color: var(--terminal-green);
}

/* Main content */
main {
    background: rgba(0, 20, 0, 0.8);
    border: 3px solid var(--terminal-green);
    padding: 30px;
    box-shadow:
        0 0 20px var(--terminal-glow),
        inset 0 0 20px rgba(0, 255, 0, 0.1);
    position: relative;
}

/* Terminal corners */
main::before,
main::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid var(--terminal-green);
}

main::before {
    top: -3px;
    left: -3px;
    border-right: none;
    border-bottom: none;
}

main::after {
    top: -3px;
    right: -3px;
    border-left: none;
    border-bottom: none;
}

/* Legal Notice */
.legal-notice {
    background: rgba(0, 100, 0, 0.2);
    border: 2px solid var(--terminal-dark-green);
    padding: 15px;
    margin-bottom: 30px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.2rem;
}

.legal-notice::before {
    content: '[!] WARNING: ';
    color: var(--terminal-green);
    font-weight: bold;
    text-shadow: 0 0 10px var(--terminal-green);
}

.legal-notice a {
    color: var(--terminal-light-green);
    text-decoration: underline;
    text-shadow: 0 0 5px var(--terminal-green);
}

.legal-notice a:hover {
    color: var(--terminal-green);
    text-shadow: 0 0 10px var(--terminal-green);
}

/* Input group */
.input-group {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

#youtubeUrl {
    flex: 1;
    padding: 15px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.3rem;
    background: var(--terminal-bg);
    border: 2px solid var(--terminal-dark-green);
    color: var(--terminal-green);
    outline: none;
    box-shadow: inset 0 0 10px rgba(0, 255, 0, 0.2);
}

#youtubeUrl::placeholder {
    color: var(--terminal-dark-green);
}

#youtubeUrl:focus {
    border-color: var(--terminal-green);
    box-shadow:
        0 0 15px var(--terminal-glow),
        inset 0 0 15px rgba(0, 255, 0, 0.3);
}

/* Buttons */
.btn-primary {
    padding: 15px 30px;
    background: var(--terminal-bg);
    color: var(--terminal-green);
    border: 3px solid var(--terminal-green);
    font-size: 1.5rem;
    font-family: 'VT323', monospace;
    cursor: pointer;
    transition: all 0.3s ease;
    text-shadow: 0 0 10px var(--terminal-green);
    box-shadow: 0 0 10px var(--terminal-glow);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '[ ';
}

.btn-primary::after {
    content: ' ]';
}

.btn-primary:hover {
    background: var(--terminal-green);
    color: var(--terminal-bg);
    box-shadow: 0 0 20px var(--terminal-green);
    text-shadow: none;
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* File Upload Section */
.file-upload-section {
    text-align: center;
    margin: 30px 0;
    padding: 30px;
    border: 2px dashed var(--terminal-dark-green);
    background: rgba(0, 50, 0, 0.3);
}

.file-label {
    display: inline-block;
    padding: 15px 30px;
    background: var(--terminal-bg);
    border: 2px solid var(--terminal-green);
    color: var(--terminal-green);
    font-size: 1.3rem;
    font-family: 'VT323', monospace;
    cursor: pointer;
    transition: all 0.3s;
}

.file-label:hover {
    background: var(--terminal-green);
    color: var(--terminal-bg);
    box-shadow: 0 0 15px var(--terminal-green);
}

.file-icon {
    font-size: 1.5rem;
}

#fileUpload {
    display: none;
}

.file-name {
    margin-top: 15px;
    color: var(--terminal-light-green);
    font-size: 1.2rem;
}

/* Progress Bar */
.progress-container {
    margin: 30px 0;
    padding: 20px;
    background: rgba(0, 30, 0, 0.8);
    border: 2px solid var(--terminal-green);
}

.progress-bar {
    width: 100%;
    height: 30px;
    background: var(--terminal-bg);
    border: 2px solid var(--terminal-dark-green);
    overflow: hidden;
    margin-bottom: 15px;
}

.progress-fill {
    height: 100%;
    background: var(--terminal-green);
    width: 0%;
    transition: width 0.3s;
    box-shadow: 0 0 20px var(--terminal-green);
    position: relative;
    animation: progressPulse 1s ease-in-out infinite;
}

@keyframes progressPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.status-text {
    text-align: center;
    color: var(--terminal-green);
    font-size: 1.5rem;
    text-shadow: 0 0 10px var(--terminal-green);
}

.status-text::before {
    content: '> ';
}

/* Download Container */
.download-container {
    text-align: center;
    padding: 30px;
    background: rgba(0, 50, 0, 0.5);
    border: 3px solid var(--terminal-green);
    margin: 30px 0;
    box-shadow: 0 0 20px var(--terminal-glow);
}

.success-message {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 25px;
    color: var(--terminal-green);
    font-size: 1.8rem;
    text-shadow: 0 0 15px var(--terminal-green);
}

.success-icon {
    display: inline-block;
    font-size: 2rem;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 49% {
        opacity: 1;
    }
    50%, 100% {
        opacity: 0;
    }
}

.btn-download {
    padding: 20px 40px;
    background: var(--terminal-green);
    color: var(--terminal-bg);
    border: 3px solid var(--terminal-green);
    font-size: 1.8rem;
    font-family: 'VT323', monospace;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 0 20px var(--terminal-green);
}

.btn-download::before {
    content: '>> ';
}

.btn-download::after {
    content: ' <<';
}

.btn-download:hover {
    background: var(--terminal-bg);
    color: var(--terminal-green);
    box-shadow: 0 0 30px var(--terminal-green);
}

.file-info {
    margin-top: 15px;
    color: var(--terminal-dark-green);
    font-size: 1.2rem;
}

.hidden {
    display: none !important;
}

/* Features Section */
.features-section {
    margin: 50px 0;
}

.features-section h2 {
    text-align: center;
    color: var(--terminal-green);
    margin-bottom: 30px;
    font-size: 2.5rem;
    text-shadow: 0 0 15px var(--terminal-green);
}

.features-section h2::before {
    content: '=== ';
}

.features-section h2::after {
    content: ' ===';
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.feature-card {
    text-align: center;
    padding: 25px;
    background: rgba(0, 30, 0, 0.6);
    border: 2px solid var(--terminal-dark-green);
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--terminal-green);
    box-shadow: 0 0 20px var(--terminal-glow);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    filter: drop-shadow(0 0 10px var(--terminal-green));
}

.feature-card h3 {
    color: var(--terminal-green);
    margin-bottom: 10px;
    font-size: 1.8rem;
}

.feature-card p {
    color: var(--terminal-dark-green);
    font-size: 1.2rem;
    font-family: 'Share Tech Mono', monospace;
}

/* Ad Spaces */
.ad-space {
    background: rgba(0, 20, 0, 0.5);
    border: 2px dashed var(--terminal-dark-green);
    padding: 20px;
    text-align: center;
    color: var(--terminal-dark-green);
    margin: 20px 0;
    font-family: 'Share Tech Mono', monospace;
}

.ad-space::before {
    content: '[ADVERTISEMENT SLOT]';
    display: block;
    color: var(--terminal-green);
}

/* Footer */
footer {
    text-align: center;
    color: var(--terminal-dark-green);
    padding: 30px 20px;
    margin-top: 40px;
    border-top: 2px solid var(--terminal-dark-green);
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.2rem;
}

footer a {
    color: var(--terminal-green);
    text-decoration: none;
}

footer a:hover {
    text-shadow: 0 0 10px var(--terminal-green);
}

.disclaimer::before {
    content: '> ';
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }

    .input-group {
        flex-direction: column;
    }

    main {
        padding: 20px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* Selection color */
::selection {
    background: var(--terminal-green);
    color: var(--terminal-bg);
}