:root {
    --black: #050505;
    --white: #ffffff;
    --gray-bg: #f4f4f5;
    --gray-border: #e4e4e7;
    --gray-text: #52525b;
    --success: #15803d;
    --error: #b91c1c;
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

body { background-color: var(--gray-bg); color: var(--black); font-family: var(--font-main); line-height: 1.6; padding: 20px; }

.app-container { max-width: 900px; margin: 0 auto; background: var(--white); padding: 40px; border: 2px solid var(--black); border-radius: 12px; box-shadow: 6px 6px 0px var(--black); }

.app-header { text-align: center; margin-bottom: 30px; padding-bottom: 20px; border-bottom: 2px solid var(--gray-border); }
.logo { max-width: 220px; height: auto; margin-bottom: 15px; }
.app-header h1 { font-size: 26px; font-weight: 800; letter-spacing: -0.5px; }
.app-header p { color: var(--gray-text); }

.controls-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; margin-bottom: 20px; }
label { display: block; font-weight: 600; margin-bottom: 5px; font-size: 14px; }

select, textarea { width: 100%; padding: 12px; border: 2px solid var(--gray-border); border-radius: 6px; font-family: inherit; font-size: 15px; background-color: var(--white); }
select:focus, textarea:focus { outline: none; border-color: var(--black); }
textarea { height: 180px; resize: vertical; margin-bottom: 15px; }

.btn-black { background-color: var(--black); color: var(--white); border: 2px solid var(--black); padding: 14px 24px; font-size: 16px; font-weight: bold; border-radius: 6px; cursor: pointer; width: 100%; transition: all 0.2s; }
.btn-black:hover:not(:disabled) { background-color: var(--white); color: var(--black); }
.btn-black:disabled { opacity: 0.6; cursor: not-allowed; }

.status-box { margin-top: 20px; padding: 20px; background: var(--gray-bg); border: 1px solid var(--gray-border); border-radius: 6px; text-align: center; }
.progress-bar-container { width: 100%; height: 8px; background: #ddd; border-radius: 4px; margin: 15px 0; overflow: hidden; }
.progress-bar { height: 100%; background: var(--black); width: 0%; transition: width 0.3s ease; }
.status-note { font-size: 13px; color: var(--gray-text); }

.results-area { margin-top: 30px; padding-top: 30px; border-top: 2px solid var(--black); }
.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 20px; }
.dash-panel { background: var(--white); border: 2px solid var(--gray-border); border-radius: 8px; padding: 25px; }
.full-width { grid-column: 1 / -1; }

.score-panel { background: var(--black); color: var(--white); text-align: center; border-color: var(--black); box-shadow: 4px 4px 0px var(--gray-border); }
.score-panel h2 { font-size: 18px; margin-bottom: 10px; font-weight: 600; }
.score-panel .score-number { font-size: 56px; font-weight: 900; line-height: 1; margin-bottom: 15px; }
.general-feedback { font-size: 16px; opacity: 0.9; max-width: 700px; margin: 0 auto; }

h3 { margin-bottom: 15px; font-size: 18px; border-bottom: 2px solid var(--gray-border); padding-bottom: 8px; display: inline-block; font-weight: 700; }

.corrections-container { display: flex; flex-direction: column; gap: 15px; }
.correction-card { padding: 15px; border: 1px solid var(--gray-border); border-left: 4px solid var(--black); border-radius: 6px; background: #fafafa; }
.correction-compare { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 10px; font-size: 16px; font-weight: 600; }
.wrong-text { color: var(--error); text-decoration: line-through; }
.correct-text { color: var(--success); }
.arrow { color: var(--gray-text); font-size: 14px; }
.correction-explanation { font-size: 14px; color: var(--gray-text); margin-top: 5px; }

.dynamic-list { padding-left: 20px; color: var(--gray-text); font-size: 15px; }
.dynamic-list li { margin-bottom: 8px; }
/* Estilo Terminal Avanzada */
#analysis-terminal {
    background: #0a0a0a !important;
    color: #00ff41 !important; /* Verde Matrix */
    font-family: 'Courier New', Courier, monospace !important;
    border: 1px solid #333;
    position: relative;
    overflow: hidden;
}

/* Efecto de línea de escaneo */
#analysis-terminal::before {
    content: " ";
    display: block;
    position: absolute;
    top: 0; left: 0; bottom: 0; right: 0;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), 
                linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
    z-index: 2;
    background-size: 100% 2px, 3px 100%;
    pointer-events: none;
}

/* Cursor parpadeante */
.cursor {
    display: inline-block;
    width: 8px;
    height: 15px;
    background: #00ff41;
    margin-left: 5px;
    animation: blink 0.8s infinite;
    vertical-align: middle;
}

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

.log-line {
    margin-bottom: 4px;
    opacity: 0;
    animation: fadeInLog 0.3s forwards;
}

@keyframes fadeInLog {
    to { opacity: 1; }
}
.hidden { display: none !important; }
/* SEO Visual & Accessibility */
h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* Evitar que el texto sea demasiado pequeño en móviles para Google */
@media (max-width: 600px) {
    body {
        font-size: 16px;
    }
    .app-container {
        padding: 15px;
        margin: 10px;
    }
}

/* Estilo para que el link de Mentes Altus en el footer (opcional) sea elegante */
.footer-credit {
    text-align: center;
    margin-top: 40px;
    font-size: 12px;
    color: var(--gray-text);
}
.footer-credit a {
    color: var(--black);
    text-decoration: none;
    font-weight: bold;
}
@media (max-width: 600px) {
    .controls-grid { grid-template-columns: 1fr; }
    .app-container { padding: 20px; box-shadow: 4px 4px 0px var(--black); }
}