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

:root {
    --primary-glow: #00ff88;
    --secondary-glow: #00d4ff;
    --accent-glow: #ff006e;
    --dark-bg: #0a0e27;
    --dark-panel: #141829;
    --grid-color: rgba(0, 255, 136, 0.03);
    --text-primary: #e0e0ff;
    --text-secondary: #a0a0ff;
}

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

body {
    font-family: 'Courier New', 'Space Mono', monospace;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #0f1035 50%, var(--dark-bg) 100%);
    color: var(--text-primary);
    position: relative;
    display: flex;
    flex-direction: column;
}


/* Background Grid Effect */

.background-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(0deg, var(--grid-color) 1px, transparent 1px), linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 1;
    opacity: 0.5;
}


/* Animated Stars */

.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 2;
}

header {
    background: linear-gradient(90deg, rgba(0, 255, 136, 0.1) 0%, rgba(0, 212, 255, 0.1) 50%, rgba(255, 0, 110, 0.1) 100%);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--primary-glow);
    text-align: center;
    padding: 20px;
    box-shadow: 0 4px 30px rgba(0, 255, 136, 0.2), inset 0 1px 0 rgba(0, 255, 136, 0.1);
}

header h1 {
    font-size: 2em;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.glow {
    color: var(--primary-glow);
    text-shadow: 0 0 10px var(--primary-glow), 0 0 20px rgba(0, 255, 136, 0.5);
}

.glow-accent {
    color: var(--secondary-glow);
    text-shadow: 0 0 10px var(--secondary-glow), 0 0 20px rgba(0, 212, 255, 0.5);
}

header .subtitle {
    font-size: 0.85em;
    color: var(--secondary-glow);
    letter-spacing: 2px;
    text-transform: uppercase;
    text-shadow: 0 0 8px var(--secondary-glow);
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 20px;
    gap: 15px;
}

.controls-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 12px 20px;
    background: rgba(20, 24, 41, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 255, 136, 0.2);
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.1), inset 0 0 20px rgba(0, 255, 136, 0.05);
}

.control-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.control-group label {
    color: var(--primary-glow);
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.control-group select {
    padding: 8px 12px;
    background: rgba(0, 255, 136, 0.05);
    border: 1px solid var(--primary-glow);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-size: 0.85em;
}

.control-group select:hover,
.control-group select:focus {
    background: rgba(0, 255, 136, 0.15);
    border-color: var(--secondary-glow);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
    outline: none;
}

.control-group input[type="file"] {
    padding: 6px 8px;
    background: rgba(0, 255, 136, 0.05);
    border: 1px solid var(--primary-glow);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.control-group input[type="file"]::file-selector-button {
    background: rgba(0, 255, 136, 0.1);
    color: var(--primary-glow);
    border: none;
    border-radius: 3px;
    padding: 4px 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.control-group input[type="file"]::file-selector-button:hover {
    background: rgba(0, 255, 136, 0.25);
    text-shadow: 0 0 8px var(--primary-glow);
}

.button-group {
    display: flex;
    gap: 10px;
}

.btn {
    padding: 10px 20px;
    border: 1px solid var(--primary-glow);
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.85em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-icon {
    font-size: 1em;
}

.btn-primary {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.2) 0%, rgba(0, 212, 255, 0.2) 100%);
    color: var(--primary-glow);
    border-color: var(--primary-glow);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.3), inset 0 0 10px rgba(0, 255, 136, 0.1);
}

.btn-primary:hover {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.4) 0%, rgba(0, 212, 255, 0.4) 100%);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.6), inset 0 0 20px rgba(0, 255, 136, 0.2);
    transform: scale(1.05);
}

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

.btn-secondary {
    background: rgba(0, 255, 136, 0.05);
    color: var(--secondary-glow);
    border-color: var(--secondary-glow);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.15);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
    transform: scale(1.05);
}

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

.content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 15px;
    min-height: 0;
}

.input-section,
.output-section {
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.input-section label,
.output-section label {
    font-size: 0.9em;
    font-weight: 600;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.input-section label {
    color: var(--primary-glow);
}

.output-section label {
    color: var(--secondary-glow);
}

.label-glow {
    font-size: 0.8em;
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%,
    100% {
        opacity: 0.5;
        text-shadow: 0 0 5px currentColor;
    }
    50% {
        opacity: 1;
        text-shadow: 0 0 15px currentColor;
    }
}

textarea {
    flex: 1;
    padding: 15px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85em;
    line-height: 1.6;
    resize: none;
    transition: all 0.3s ease;
    min-height: 0;
    backdrop-filter: blur(5px);
    box-shadow: inset 0 0 20px rgba(0, 255, 136, 0.05), 0 0 20px rgba(0, 255, 136, 0.1);
}

.input-section textarea {
    border-color: rgba(0, 255, 136, 0.3);
}

.output-section textarea {
    border-color: rgba(0, 212, 255, 0.3);
}

textarea:focus {
    outline: none;
    border-color: var(--primary-glow);
    box-shadow: inset 0 0 20px rgba(0, 255, 136, 0.1), 0 0 30px rgba(0, 255, 136, 0.3);
}

.output-section textarea:focus {
    border-color: var(--secondary-glow);
    box-shadow: inset 0 0 20px rgba(0, 212, 255, 0.1), 0 0 30px rgba(0, 212, 255, 0.3);
}

textarea[readonly] {
    background: rgba(0, 0, 0, 0.2);
}

textarea::placeholder {
    color: rgba(160, 160, 255, 0.3);
}

.divider {
    width: 2px;
    background: linear-gradient(180deg, transparent, var(--accent-glow), transparent);
    box-shadow: 0 0 10px rgba(255, 0, 110, 0.3);
}

.message {
    padding: 12px 16px;
    border-radius: 4px;
    font-size: 0.85em;
    font-weight: 600;
    min-height: 20px;
    display: none;
    animation: slideIn 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.message.success {
    background: rgba(0, 255, 136, 0.2);
    border: 1px solid var(--primary-glow);
    color: var(--primary-glow);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.3), inset 0 0 15px rgba(0, 255, 136, 0.1);
    display: block;
}

.message.error {
    background: rgba(255, 0, 110, 0.2);
    border: 1px solid var(--accent-glow);
    color: var(--accent-glow);
    box-shadow: 0 0 15px rgba(255, 0, 110, 0.3), inset 0 0 15px rgba(255, 0, 110, 0.1);
    display: block;
}

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


/* Responsive Design */

@media (max-width: 1024px) {
    .controls-panel {
        flex-direction: column;
        align-items: flex-start;
    }
    .button-group {
        width: 100%;
    }
    .btn {
        flex: 1;
        justify-content: center;
    }
    .content {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    .divider {
        display: none;
    }
}

@media (max-width: 768px) {
    header {
        padding: 15px;
    }
    header h1 {
        font-size: 1.5em;
    }
    header .subtitle {
        font-size: 0.8em;
    }
    main {
        padding: 15px;
        gap: 10px;
    }
    .controls-panel {
        padding: 10px 15px;
    }
    .btn {
        padding: 8px 16px;
        font-size: 0.8em;
    }
    textarea {
        font-size: 0.8em;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }
    header h1 {
        font-size: 1.3em;
        letter-spacing: 2px;
    }
    header .subtitle {
        font-size: 0.75em;
        letter-spacing: 1px;
    }
    main {
        padding: 10px;
        gap: 8px;
    }
    .controls-panel {
        padding: 8px 12px;
        gap: 10px;
    }
    .control-group {
        width: 100%;
    }
    .control-group label {
        font-size: 0.75em;
    }
    .button-group {
        width: 100%;
        gap: 6px;
    }
    .btn {
        flex: 1;
        padding: 6px 10px;
        font-size: 0.75em;
    }
    .btn-icon {
        display: none;
    }
    textarea {
        font-size: 0.75em;
        padding: 10px;
    }
    .message {
        padding: 8px 12px;
        font-size: 0.75em;
    }
}