:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #212529;
    --border-color: #dee2e6;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    max-width: 150px;
    margin-bottom: 15px;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
}

header p {
    font-size: 1.1rem;
    color: var(--secondary-color);
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.card h2 {
    margin-top: 0;
    font-size: 1.5rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
}

textarea {
    width: 100%;
    padding: 15px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    box-sizing: border-box; /* Importante para que el padding no afecte el ancho total */
    margin-bottom: 20px;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}

button {
    background-color: var(--primary-color);
    color: white;
    padding: 15px 25px;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 52px;
}

button:hover {
    background-color: #0b5ed7;
}

button:disabled {
    background-color: #a0c3f7;
    cursor: not-allowed;
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top: 4px solid #ffffff;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#results-container {
    animation: fadeIn 0.5s ease-in-out;
}

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

.result-section {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.result-section h3 {
    font-size: 1.4rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
    margin-top: 0;
    display: flex;
    align-items: center;
}

.result-section h3::before {
    content: '🔹';
    margin-right: 10px;
}

.result-section ul {
    list-style: none;
    padding-left: 0;
}

.result-section ul li {
    background-color: #f8f9fa;
    border-left: 4px solid var(--primary-color);
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 4px;
}

.result-section strong {
    color: var(--primary-color);
}

.pilar {
    margin-bottom: 25px !important;
}

.pilar strong {
    font-size: 1.1rem;
    display: block;
    margin-bottom: 5px;
}

footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--secondary-color);
}

/* --- ESTILOS PARA PESTAÑAS --- */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 25px;
}
.tab-link {
    padding: 10px 20px;
    cursor: pointer;
    border: none;
    background-color: transparent;
    font-size: 1rem;
    font-weight: 500;
    color: var(--secondary-color);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px; /* Alinea con el borde inferior del contenedor */
}
.tab-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}
.tab-content {
    display: none; /* Oculto por defecto */
}
.tab-content.active {
    display: block; /* Visible cuando está activo */
    animation: fadeIn 0.5s;
}
.file-upload-wrapper {
    border: 2px dashed var(--border-color);
    border-radius: 6px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    background-color: var(--bg-color);
    margin-bottom: 20px;
}
.file-upload-wrapper:hover {
    border-color: var(--primary-color);
}
input[type="file"] {
    display: none;
}
.file-upload-label {
    cursor: pointer;
    font-weight: 500;
    color: var(--secondary-color);
}
.file-upload-label:hover {
    color: var(--primary-color);
}

/* --- ESTILOS PARA FASE 2 --- */
#phase2-container {
    border-top: 4px solid #fd7e14; /* Un color naranja para diferenciar */
}

#phase2-container h2 {
    border-bottom-color: #fd7e14;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input[type="text"] {
    width: 100%;
    padding: 12px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    box-sizing: border-box;
}

.secondary-button {
    background-color: var(--secondary-color);
    margin-top: 10px;
    width: auto;
    padding: 10px 20px;
    font-size: 0.9rem;
    height: auto;
}

.secondary-button:hover {
    background-color: #5c636a;
}

#campaign-results-container .result-section h3::before {
    content: '🚀'; /* Un cohete para los resultados de la campaña */
}