/* ========================================
   CCNA 200-301 STYLE - Cisco / Pearson Vue
   ======================================== */

:root {
    --cisco-blue: #005073;
    --cisco-blue-dark: #003853;
    --cisco-blue-light: #049fd9;
    --bg-primary: #f2f2f2;
    --bg-card: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #d9d9d9;
    --accent-green: #6aab58;
    --accent-red: #d15b47;
    --accent-orange: #ed7d31;
    --hover-bg: #e8f4fd;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --correct-bg: #eaf7e7;
    --incorrect-bg: #fde8e4;
    --font-stack: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
}

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

body {
    font-family: var(--font-stack);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    font-size: 14px;
    line-height: 1.5;
}

#app {
    max-width: 980px;
    margin: 0 auto;
    padding: 0;
}

/* ========================================
   HEADER
   ======================================== */

header {
    background: linear-gradient(135deg, var(--cisco-blue-dark), var(--cisco-blue));
    color: white;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

header h1 {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

header h1::before {
    content: "▼ ";
    font-size: 0.8rem;
}

#stats {
    display: flex;
    gap: 24px;
    font-size: 0.85rem;
}

#stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

#temporizador {
    color: #ffd966;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* ========================================
   CONFIG SCREEN
   ======================================== */

#configScreen {
    background: var(--bg-card);
    border-radius: 0;
    padding: 60px 40px;
    text-align: center;
    max-width: 520px;
    margin: 80px auto;
    box-shadow: var(--shadow);
}

#configScreen h2 {
    color: var(--cisco-blue);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 8px;
}

#configScreen .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 32px;
}

.config-group {
    margin-bottom: 24px;
    text-align: left;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.config-group label {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

.config-group input {
    width: 90px;
    padding: 8px 10px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: white;
    color: var(--text-primary);
    font-size: 1rem;
    text-align: center;
    font-weight: 600;
}

.config-group input:focus {
    outline: none;
    border-color: var(--cisco-blue-light);
    box-shadow: 0 0 0 2px rgba(4, 159, 217, 0.2);
}

/* ========================================
   BUTTONS
   ======================================== */

button {
    background: var(--cisco-blue);
    color: white;
    border: none;
    padding: 11px 28px;
    border-radius: 4px;
    font-size: 0.95rem;
    font-family: var(--font-stack);
    cursor: pointer;
    font-weight: 500;
    transition: background 0.15s;
    letter-spacing: 0.2px;
}

button:hover { background: var(--cisco-blue-dark); }
button:active { transform: scale(0.98); }

button.btn-primary {
    background: var(--cisco-blue);
    min-width: 160px;
}

button.btn-secondary {
    background: #888;
}

button.btn-secondary:hover {
    background: #666;
}

button.btn-danger {
    background: var(--accent-red);
    min-width: 120px;
}

button.btn-danger:hover {
    background: #b94a3a;
}

#configScreen button {
    margin-top: 16px;
    min-width: 200px;
    font-size: 1rem;
    padding: 12px 28px;
}

/* ========================================
   EXAM SCREEN - QUESTION AREA
   ======================================== */

#examScreen {
    margin: 20px;
}

#preguntaContainer {
    background: var(--bg-card);
    padding: 28px 32px;
    margin-bottom: 16px;
    box-shadow: var(--shadow);
}

#preguntaNumero {
    color: var(--cisco-blue);
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--cisco-blue);
    display: inline-block;
}

#preguntaTexto {
    font-size: 1rem;
    line-height: 1.7;
    margin: 18px 0 24px 0;
    color: var(--text-primary);
}

/* ========================================
   OPTIONS
   ======================================== */

#opciones {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.opcion {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 14px;
    border: 1px solid transparent;
    border-radius: 0;
    cursor: pointer;
    transition: all 0.1s;
    border-left: 3px solid transparent;
}

.opcion:hover {
    background: var(--hover-bg);
    border-left-color: var(--cisco-blue-light);
}

.opcion.seleccionada {
    background: #e1f0fa;
    border-left-color: var(--cisco-blue);
    border-bottom: 1px solid #c0dcec;
}

.opcion.correcta {
    background: var(--correct-bg);
    border-left-color: var(--accent-green);
}

.opcion.incorrecta {
    background: var(--incorrect-bg);
    border-left-color: var(--accent-red);
}

.letra {
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    border-radius: 0;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
    color: var(--text-primary);
    background: white;
    transition: all 0.15s;
}

.opcion.seleccionada .letra {
    background: var(--cisco-blue);
    border-color: var(--cisco-blue);
    color: white;
}

.opcion.correcta .letra {
    background: var(--accent-green);
    border-color: var(--accent-green);
    color: white;
}

.opcion.incorrecta .letra {
    background: var(--accent-red);
    border-color: var(--accent-red);
    color: white;
}

.letra-indicador {
    display: inline-block;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    border: 1px solid var(--border-color);
    font-size: 0.75rem;
    font-weight: 700;
    margin-right: 4px;
}

.texto {
    line-height: 1.5;
    padding-top: 3px;
    color: var(--text-primary);
}

/* ========================================
   CHECKBOX (multiple select)
   ======================================== */

.checkbox-indicator {
    display: inline-flex;
    width: 18px;
    height: 18px;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin-right: 2px;
    flex-shrink: 0;
}

.opcion.seleccionada .checkbox-indicator {
    color: var(--cisco-blue);
}

/* ========================================
   EXHIBIT / IMAGE PLACEHOLDER
   ======================================== */

.exhibit-placeholder {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 12px 0;
    padding: 10px 16px;
    background: #f0f7fb;
    border: 1px dashed var(--cisco-blue-light);
    color: var(--cisco-blue);
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.15s;
    border-radius: 4px;
}

.exhibit-placeholder:hover {
    background: #e0f0fa;
}

.exhibit-icon {
    font-size: 1.3rem;
}

.pregunta-img {
    max-width: 100%;
    height: auto;
    margin: 12px 0;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    display: block;
}

.tipo-pregunta {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 400;
    text-transform: uppercase;
}

/* ========================================
   FEEDBACK
   ======================================== */

#feedback {
    margin-top: 20px;
    padding: 16px 20px;
    border-radius: 0;
    background: #fafafa;
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--cisco-blue);
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-primary);
}

/* ========================================
   NAVIGATION
   ======================================== */

/* Question navigation buttons */
#navegacion {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

#navegacion button {
    min-width: 120px;
    padding: 10px 20px;
    font-size: 0.85rem;
}

/* ========================================
   MINI GRID (Question Navigator)
   ======================================== */

#miniGrid {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    justify-content: center;
    background: var(--bg-card);
    padding: 14px 16px;
    box-shadow: var(--shadow);
}

.cuadro {
    width: 30px;
    height: 30px;
    background: white;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    cursor: pointer;
    transition: all 0.1s;
    font-weight: 500;
    color: var(--text-primary);
}

.cuadro:hover {
    border-color: var(--cisco-blue-light);
    background: var(--hover-bg);
}

.cuadro.actual {
    background: var(--cisco-blue);
    border-color: var(--cisco-blue);
    color: white;
    font-weight: 700;
}

.cuadro.respondida {
    background: #e1f0fa;
    border-color: var(--cisco-blue-light);
}

.cuadro.respondida.correcta-final {
    background: var(--accent-green);
    border-color: #4a8a3a;
    color: white;
}

.cuadro.respondida.incorrecta-final {
    background: var(--accent-red);
    border-color: #a43a2a;
    color: white;
}

/* ========================================
   RESULTS
   ======================================== */

#resultScreen {
    background: var(--bg-card);
    margin: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
}

#resultScreen h2 {
    color: var(--cisco-blue);
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 8px;
    text-align: left;
}

#resultScreen .result-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 28px;
    text-align: left;
}

#resultadoPuntaje {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 4px;
    text-align: center;
    padding: 24px;
    background: #fafafa;
    border: 1px solid var(--border-color);
    margin-bottom: 28px;
}

#resultadoPuntaje.aprobado {
    color: var(--accent-green);
    border-left: 6px solid var(--accent-green);
}

#resultadoPuntaje.reprobado {
    color: var(--accent-red);
    border-left: 6px solid var(--accent-red);
}

#resultadoDetalle {
    margin: 20px 0;
    text-align: left;
}

.resultado-pregunta {
    padding: 10px 14px;
    margin-bottom: 4px;
    background: #fafafa;
    border-left: 4px solid var(--border-color);
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.1s;
}

.resultado-pregunta:hover {
    background: var(--hover-bg);
}

.resultado-pregunta.correcta {
    border-left-color: var(--accent-green);
}

.resultado-pregunta.incorrecta {
    border-left-color: var(--accent-red);
}

.resultado-pregunta .num {
    font-weight: 700;
    color: var(--cisco-blue);
}

.pregunta-respuesta-tuya {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 4px;
}

#resultScreen > button {
    display: block;
    margin: 24px auto 0;
}

/* ========================================
   UTILITY
   ======================================== */

.separator {
    height: 1px;
    background: var(--border-color);
    margin: 20px 0;
}