:root {
    --bg-color: #000000;
    --text-color: #5eb7ff;
    --dim-text: #4a8bbd;
    --border-color: #5eb7ff;
    --font-main: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

.terminal-container {
    width: 100%;
    max-width: 900px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Header Styling */
.terminal-header {
    text-align: center;
    color: var(--text-color);
    text-shadow: 0 0 5px var(--text-color);
    display: flex;
    justify-content: center;
}

.header-pre {
    font-family: var(--font-main);
    font-size: 0.75rem;
    line-height: 1.2;
    margin: 0;
    filter: drop-shadow(0 0 2px var(--text-color));
}

/* Main Content */
.terminal-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.prompt-line {
    display: flex;
    align-items: center;
    font-size: 1.2rem;
    background: rgba(94, 183, 255, 0.05);
    padding: 10px;
    border-radius: 4px;
}

.prompt {
    margin-right: 15px;
    font-weight: bold;
}

input[type="text"] {
    background: transparent;
    border: none;
    color: var(--text-color);
    font-family: var(--font-main);
    font-size: 1.2rem;
    flex-grow: 1;
    outline: none;
}

.cursor {
    animation: blink 1s step-end infinite;
    font-weight: bold;
}

@keyframes blink {

    from,
    to {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

/* Controls */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

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

label {
    font-size: 0.9rem;
    color: var(--dim-text);
}

select {
    background: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 5px 10px;
    font-family: var(--font-main);
    outline: none;
    cursor: pointer;
}

select:hover {
    box-shadow: 0 0 5px var(--text-color);
}

.terminal-btn {
    background: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 8px 15px;
    font-family: var(--font-main);
    cursor: pointer;
    transition: all 0.2s;
}

.terminal-btn:hover {
    background: var(--text-color);
    color: var(--bg-color);
    box-shadow: 0 0 10px var(--text-color);
}

.terminal-btn.success {
    background: #00ff00;
    color: #000;
    border-color: #00ff00;
    box-shadow: 0 0 15px #00ff00;
}

/* Output Area */
.output-section {
    position: relative;
    margin-top: 20px;
}

.output-border {
    display: flex;
    flex-direction: column;
}

.border-top,
.border-bottom {
    display: flex;
    align-items: center;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: clip;
    max-width: 100%;
}

.line {
    flex-grow: 1;
    letter-spacing: -2px;
}

.canvas-wrapper {
    border-left: 2px solid var(--text-color);
    border-right: 2px solid var(--text-color);
    padding: 20px;
    background: rgba(94, 183, 255, 0.02);
    min-height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: auto;
}

pre {
    color: var(--text-color);
    /* Pro-level monospaced stack: SF Mono (macOS), JetBrains Mono (Web/Android), Courier (Safe) */
    font-family: 'SF Mono', 'JetBrains Mono', 'Menlo', 'Monaco', 'Courier New', monospace;
    font-size: 14px;
    /* Terminal.app Pro uses 14pt */
    font-weight: 400;
    /* Regular weight */
    line-height: 1.15;
    /* Slight spacing for vertical separation between ASCII blocks */
    letter-spacing: 0.1em;
    /* Horizontal spacing to create visible gaps between block characters */
    text-shadow: 0 0 2px var(--text-color);
    transition: opacity 0.2s ease;
    -webkit-font-smoothing: subpixel-antialiased;
    /* Match Terminal.app antialiasing */
    -moz-osx-font-smoothing: auto;
    font-feature-settings: normal;
    font-variant-ligatures: none;
    /* Disable ligatures */
    transform: scaleX(0.996);
    /* Simulate Terminal.app FontWidthSpacing */
    transform-origin: left center;
}

/* Footer */
.terminal-footer {
    margin-top: auto;
    font-size: 0.8rem;
    color: var(--dim-text);
    text-align: left;
}

.terminal-footer p {
    margin-bottom: 5px;
}

/* Mobile Responsiveness Improvements */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .terminal-container {
        gap: 20px;
    }

    .prompt-line {
        font-size: 1rem;
    }

    input[type="text"] {
        font-size: 1rem;
    }

    .controls {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
    }

    .control-group {
        width: 100%;
    }

    select {
        flex-grow: 1;
        width: 100%;
        padding: 10px;
    }

    .terminal-btn {
        width: 100%;
        padding: 12px;
    }

    .canvas-wrapper {
        padding: 10px;
        border-left: 1px solid var(--text-color);
        border-right: 1px solid var(--text-color);
    }

    pre {
        font-size: 10px;
        line-height: 1.0;
        /* Forzado para evitar separación de bloques */
        letter-spacing: 0;
        /* Sin espaciado adicional para evitar deformación por redondeo */
        transform: none;
        -webkit-text-size-adjust: none;
        text-size-adjust: none;
        font-feature-settings: "tnum";
        /* Tabular numbers para asegurar mono */
    }
}

@media (max-width: 480px) {
    .terminal-header {
        font-size: 0.6rem;
    }

    .header-pre {
        display: none;
        /* Ocultar el banner decorativo superior en móviles muy pequeños */
    }

    /* Mostrar un título simple en su lugar */
    .terminal-header::after {
        content: "[ ASCII GENERATOR v1.0.0 ]";
        font-family: var(--font-main);
        font-size: 0.8rem;
    }

    pre {
        font-size: 8px;
        line-height: 1.0;
        letter-spacing: 0;
        transform: none;
        word-break: break-all;
    }

    .border-top,
    .border-bottom {
        font-size: 8px;
    }
}