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

:root {
    --dos-black: #000000;
    --dos-cyan: #00FFFF;
    --dos-yellow: #FFFF00;
    --dos-white: #FFFFFF;
    --dos-blue: #000080;
    --dos-light-blue: #0000AA;
    --dos-green: #00FF00;
    --dos-amber: #FFAA00;
    --dos-red: #FF0000;
    --dos-gray: #AAAAAA;
    --dos-dark-gray: #555555;
}

@font-face {
    font-family: 'DOS';
    src: local('IBM Plex Mono'), local('Courier New'), local('Consolas');
}

body {
    font-family: 'IBM Plex Mono', 'Courier New', 'Consolas', monospace;
    background: var(--dos-black);
    color: var(--dos-cyan);
    min-height: 100vh;
    overflow-x: hidden;
    font-size: 14px;
    line-height: 1.4;
    image-rendering: pixelated;
}

/* CRT Effects */
.crt-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0,0,0,0.3) 100%);
    border-radius: 20px;
}

.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1001;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.1) 0px,
        rgba(0, 0, 0, 0.1) 1px,
        transparent 1px,
        transparent 2px
    );
}

/* DOS Window */
.dos-window {
    max-width: 900px;
    margin: 10px auto;
    padding: 0;
    position: relative;
}

.dos-border-top,
.dos-border-bottom {
    color: var(--dos-cyan);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    font-size: 14px;
    text-shadow: 0 0 5px var(--dos-cyan);
}

.border-char {
    color: var(--dos-cyan);
    text-shadow: 0 0 5px var(--dos-cyan);
}

/* Title Bar */
.dos-title-bar {
    display: flex;
    align-items: center;
    padding: 2px 0;
    background: var(--dos-black);
}

.dos-title-bar .title-content {
    flex: 1;
    color: var(--dos-yellow);
    text-shadow: 0 0 5px var(--dos-yellow);
    padding-left: 5px;
}

.dos-title-bar .close-btn {
    color: var(--dos-gray);
    padding-right: 5px;
}

/* Menu Bar */
.dos-menu-bar {
    display: flex;
    align-items: center;
    padding: 2px 0;
    background: var(--dos-black);
}

.menu-item {
    color: var(--dos-cyan);
    margin-right: 15px;
    cursor: pointer;
}

.menu-item:hover {
    background: var(--dos-cyan);
    color: var(--dos-black);
}

.menu-hot {
    color: var(--dos-white);
    text-decoration: underline;
}

.menu-spacer {
    flex: 1;
}

/* Separator */
.dos-separator {
    color: var(--dos-cyan);
    text-align: center;
    font-size: 14px;
    text-shadow: 0 0 5px var(--dos-cyan);
}

/* Mode Toggle */
.dos-mode-toggle {
    display: flex;
    align-items: center;
    padding: 8px 0;
    background: var(--dos-black);
    flex-wrap: wrap;
}

.mode-label {
    color: var(--dos-yellow);
    margin-left: 10px;
    margin-right: 15px;
}

.mode-radio {
    display: flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: none;
    color: var(--dos-cyan);
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    margin-right: 20px;
    padding: 3px 5px;
}

.mode-radio:hover {
    background: var(--dos-blue);
}

.mode-radio.active .radio-char {
    color: var(--dos-green);
}

.hotkey {
    color: var(--dos-gray);
}

.mode-spacer {
    flex: 1;
}

/* Main Content */
.dos-main-content {
    display: flex;
    padding: 5px 0;
    background: var(--dos-black);
}

.panels-container {
    flex: 1;
    display: flex;
    gap: 10px;
    padding: 0 10px;
    flex-wrap: wrap;
}

/* DOS Panel */
.dos-panel {
    flex: 1;
    min-width: 280px;
    display: flex;
    flex-direction: column;
}

.panel-border-top,
.panel-border-bottom,
.panel-title-sep {
    color: var(--dos-cyan);
    text-align: center;
    font-size: 12px;
    white-space: nowrap;
    overflow: hidden;
}

.panel-title {
    display: flex;
    align-items: center;
    justify-content: center;
}

.panel-title-text {
    color: var(--dos-white);
    text-align: center;
    flex: 1;
    font-weight: bold;
}

.panel-border {
    color: var(--dos-cyan);
}

.panel-content-area {
    display: flex;
    flex: 1;
    min-height: 200px;
}

.panel-inner {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dos-black);
    overflow: hidden;
    position: relative;
}

.ascii-inner {
    overflow: auto;
    align-items: flex-start;
    justify-content: flex-start;
}

/* Upload Zone */
.upload-zone {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 20px;
}

.upload-box {
    border: 2px dashed var(--dos-cyan);
    padding: 30px 20px;
    text-align: center;
}

.upload-zone:hover .upload-box,
.upload-zone.dragover .upload-box {
    border-color: var(--dos-yellow);
    background: rgba(0, 255, 255, 0.05);
}

.upload-text {
    color: var(--dos-cyan);
    margin-bottom: 5px;
}

.upload-accept {
    color: var(--dos-gray);
    font-size: 12px;
    margin-top: 10px;
}

/* Source Image & Camera */
.source-image,
.camera-feed {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.hidden {
    display: none !important;
}

/* ASCII Output */
.ascii-output {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 8px;
    line-height: 8px;
    color: var(--dos-green);
    text-shadow: 0 0 3px var(--dos-green);
    white-space: pre;
    padding: 10px;
    margin: 0;
    width: 100%;
}

.ascii-line {
    display: block;
    white-space: pre;
}

/* Camera Controls */
.dos-camera-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5px 0;
}

.camera-box {
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.camera-box-top,
.camera-box-bottom {
    color: var(--dos-cyan);
    font-size: 12px;
    text-align: center;
}

.camera-box-content,
.camera-box-btn {
    display: flex;
    align-items: center;
    padding: 5px 10px;
}

.cam-border {
    color: var(--dos-cyan);
}

.camera-label {
    color: var(--dos-yellow);
    margin: 0 10px;
}

.camera-radio {
    display: flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: none;
    color: var(--dos-cyan);
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    margin-right: 15px;
    padding: 2px 5px;
}

.camera-radio:hover {
    background: var(--dos-blue);
}

.camera-radio.active .check-char {
    color: var(--dos-green);
}

.capture-btn {
    background: var(--dos-blue);
    color: var(--dos-yellow);
    border: none;
    padding: 5px 15px;
    cursor: pointer;
    font-family: inherit;
    margin: 5px auto;
}

.capture-btn:hover {
    background: var(--dos-light-blue);
}

/* Upload Controls */
.dos-upload-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5px 0;
    gap: 15px;
}

.file-info {
    color: var(--dos-gray);
}

.file-info span {
    color: var(--dos-cyan);
}

.small-btn {
    background: var(--dos-blue);
    color: var(--dos-white);
    border: none;
    padding: 3px 10px;
    cursor: pointer;
    font-family: inherit;
}

.small-btn:hover {
    background: var(--dos-light-blue);
}

/* Settings Panel */
.dos-settings {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 0;
}

.settings-box {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 500px;
}

.settings-box-top,
.settings-box-bottom {
    color: var(--dos-cyan);
    font-size: 12px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
}

.settings-row {
    display: flex;
    align-items: center;
    padding: 5px 10px;
    flex-wrap: wrap;
}

.set-border {
    color: var(--dos-cyan);
}

.setting-label {
    color: var(--dos-yellow);
    width: 70px;
    margin-left: 10px;
}

/* DOS Slider */
.dos-slider-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-right: 10px;
}

.dos-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    background: var(--dos-dark-gray);
    outline: none;
    opacity: 0;
    position: absolute;
}

.slider-visual {
    display: flex;
    align-items: center;
    gap: 10px;
}

.slider-fill {
    font-family: inherit;
    color: var(--dos-cyan);
    letter-spacing: -1px;
}

.slider-value {
    color: var(--dos-white);
    min-width: 40px;
}

/* DOS Select */
.dos-select {
    background: var(--dos-black);
    border: 1px solid var(--dos-cyan);
    color: var(--dos-cyan);
    padding: 3px 8px;
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    margin-right: 10px;
}

.dos-select:focus {
    outline: none;
    border-color: var(--dos-yellow);
}

.dos-select option {
    background: var(--dos-black);
    color: var(--dos-cyan);
}

/* Toggle Buttons */
.toggles-row {
    gap: 5px;
}

.toggle-radio {
    display: flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: none;
    color: var(--dos-cyan);
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    margin-right: 15px;
    padding: 2px 5px;
}

.toggle-radio:hover {
    background: var(--dos-blue);
}

.toggle-radio.active .check-char {
    color: var(--dos-green);
}

/* Action Buttons */
.dos-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 0;
    gap: 15px;
    flex-wrap: wrap;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 12px;
    padding: 0;
    transition: transform 0.1s;
}

.action-btn .btn-top,
.action-btn .btn-bot {
    color: var(--dos-gray);
}

.action-btn .btn-mid {
    color: var(--dos-yellow);
    background: var(--dos-blue);
}

.action-btn:hover .btn-top {
    color: var(--dos-white);
}

.action-btn:hover .btn-mid {
    background: var(--dos-light-blue);
}

.action-btn:active {
    transform: translateY(2px);
}

.action-btn:active .btn-top {
    color: var(--dos-dark-gray);
}

.action-btn:active .btn-bot {
    color: var(--dos-white);
}

/* Status Bar */
.dos-status-bar {
    display: flex;
    align-items: center;
    padding: 5px 0;
    flex-wrap: wrap;
}

.status-text {
    color: var(--dos-green);
    margin-left: 10px;
}

.status-sep {
    color: var(--dos-cyan);
    margin: 0 15px;
}

.status-help {
    color: var(--dos-gray);
    font-size: 11px;
    flex: 1;
}

/* Footer */
.dos-footer {
    display: flex;
    align-items: center;
    padding: 5px 0;
}

.footer-text {
    flex: 1;
    text-align: center;
    color: var(--dos-gray);
}

.remix-link {
    color: var(--dos-cyan);
    text-decoration: none;
}

.remix-link:hover {
    color: var(--dos-yellow);
    text-decoration: underline;
}

/* DOS Dialog */
.dos-dialog {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.dialog-box {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    background: var(--dos-black);
    min-width: 300px;
}

.dialog-top,
.dialog-bottom {
    color: var(--dos-cyan);
    text-align: center;
    font-size: 12px;
    white-space: nowrap;
}

.dos-dialog.error .dialog-top {
    color: var(--dos-red);
}

.dialog-content {
    display: flex;
    align-items: center;
    padding: 15px 10px;
}

.dialog-border {
    color: var(--dos-cyan);
}

.dos-dialog.error .dialog-border {
    color: var(--dos-red);
}

.dialog-message {
    flex: 1;
    text-align: center;
    color: var(--dos-white);
    white-space: pre-wrap;
    padding: 0 20px;
}

.dialog-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.dialog-btn {
    background: var(--dos-blue);
    color: var(--dos-yellow);
    border: none;
    padding: 5px 20px;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
}

.dialog-btn:hover {
    background: var(--dos-light-blue);
}

/* Boot Sequence */
.boot-sequence {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dos-black);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    transition: opacity 0.5s;
}

.boot-sequence.fade-out {
    opacity: 0;
}

.boot-text {
    text-align: left;
    color: var(--dos-gray);
}

.boot-text p {
    margin-bottom: 5px;
}

.boot-line {
    color: var(--dos-cyan);
}

.boot-line .ok {
    color: var(--dos-green);
}

/* Easter Egg Input */
.easter-egg-input {
    position: fixed;
    top: -100px;
    opacity: 0;
    pointer-events: none;
}

/* Blinking Cursor */
@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.blink-cursor::after {
    content: '█';
    animation: blink 1s infinite;
    color: var(--dos-cyan);
}

/* Responsive */
@media (max-width: 700px) {
    .dos-window {
        margin: 5px;
        font-size: 11px;
    }
    
    .dos-border-top,
    .dos-border-bottom,
    .dos-separator {
        font-size: 10px;
        letter-spacing: -1px;
    }
    
    .panels-container {
        flex-direction: column;
    }
    
    .dos-panel {
        min-width: 100%;
    }
    
    .panel-content-area {
        min-height: 150px;
    }
    
    .dos-menu-bar {
        display: none;
    }
    
    .status-help {
        display: none;
    }
    
    .settings-row {
        flex-wrap: wrap;
    }
    
    .setting-label {
        width: 100%;
        margin-bottom: 5px;
    }
    
    .action-btn {
        font-size: 10px;
    }
    
    .dos-actions {
        gap: 8px;
    }
}

@media (max-width: 400px) {
    .mode-radio .mode-text {
        display: none;
    }
    
    .mode-radio .hotkey {
        display: none;
    }
    
    .toggle-radio span:not(.check-char) {
        font-size: 10px;
    }
}