/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
    padding-top: 70px; /* Espacio para el header fijo */
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header and Navigation */
header {
    background-color: #2c3e50;
    color: white;
    padding: 0.8rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.nav-logo h1 {
    font-size: 1.4rem;
    margin: 0;
}

.nav-logo a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    letter-spacing: -0.5px;
}

.nav-menu {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    display: flex;
    align-items: center;
}

.nav-menu a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    padding: 0.5rem 0.8rem;
    border-radius: 6px;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

.btn-signup {
    background-color: #3498db !important;
    color: white !important;
    font-weight: bold;
    margin-left: 0.5rem;
}

.btn-signup:hover {
    background-color: #2980b9 !important;
}

.logout-link {
    color: #ff9999 !important;
}

.logout-link:hover {
    background-color: rgba(231, 76, 60, 0.1) !important;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
}

/* Breadcrumb */
.breadcrumb {
    background-color: #ffffff;
    padding: 15px 0;
    font-size: 0.85rem;
    border-bottom: 1px solid #e1e8ed;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.breadcrumb .container {
    display: flex;
    align-items: center;
}

.breadcrumb a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb a:hover {
    color: #2c3e50;
    text-decoration: none;
}

.breadcrumb span.current {
    color: #95a5a6;
    margin-left: 8px;
}

.breadcrumb .separator {
    margin: 0 10px;
    color: #bdc3c7;
    font-weight: 300;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 60px 0 80px;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn-primary {
    background-color: #3498db;
    color: white;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 12px;
    font-weight: bold;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.2);
}

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(52, 152, 219, 0.3);
    border-color: #3498db;
}

/* Sections */
.section {
    padding: 40px 0;
    background-color: transparent;
    margin-top: 0;
}

.section:nth-child(even) {
    background-color: rgba(0,0,0,0.02);
}

.section h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    text-align: center;
    color: #2c3e50;
}

.section p {
    text-align: center;
    margin-bottom: 2rem;
    color: #666;
}

/* Form Styles */
.business-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #eee;
    transition: border-color 0.3s ease;
}

.business-form:hover {
    border-color: #3498db;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #2c3e50;
}

.form-group input:not([type="checkbox"]):not([type="radio"]),
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 5px rgba(52, 152, 219, 0.3);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: #666;
    font-size: 0.9rem;
}

.sub-form-group {
    margin-left: 1rem;
    margin-bottom: 1rem;
}

.sub-form-group label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: normal;
    font-size: 0.9rem;
}

.sub-form-group input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
}

.total-fixed {
    margin-top: 1rem;
    padding: 0.5rem;
    background-color: #ecf0f1;
    border-radius: 4px;
    text-align: center;
}

.radio-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.radio-group label {
    font-weight: normal;
    font-size: 0.9rem;
}

.error-message {
    color: #e74c3c;
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: none;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.top-actions {
    margin-bottom: 2rem;
    justify-content: flex-start;
}

.tutorial-banner {
    text-align: center;
    margin-bottom: 2rem;
}

.tutorial-banner .btn-primary {
    border-radius: 30px;
    padding: 10px 25px;
    font-size: 0.9rem;
}

.main-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.secondary-actions {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
}

.btn-small {
    padding: 8px 15px;
    font-size: 0.85rem;
    border-radius: 8px;
}

.btn-secondary i {
    margin-right: 5px;
}

.btn-primary i {
    margin-right: 8px;
}

.btn-secondary {
    background-color: white;
    color: #2c3e50;
    padding: 12px 30px;
    border: 2px solid #eee;
    border-radius: 12px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
    background-color: white;
    border-color: #3498db;
    color: #3498db;
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

/* Results Styles */
.results {
    margin-top: 2rem;
    padding: 2rem;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #eee;
    transition: border-color 0.3s ease;
}

.results:hover {
    border-color: #3498db;
}

.results h4 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.result-item h5 {
    margin-bottom: 1rem;
    color: #34495e;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
}

.results-table td {
    padding: 0.5rem;
    border-bottom: 1px solid #eee;
}

.results-table td:first-child {
    font-weight: bold;
    width: 60%;
}

.results-table td:last-child {
    text-align: right;
}

/* Scenarios */
.scenarios {
    margin-top: 2rem;
    padding: 2rem;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #eee;
    transition: border-color 0.3s ease;
}

.scenarios:hover {
    border-color: #3498db;
}

.scenarios h4 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.scenario-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.scenario-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.scenario-item label {
    font-weight: bold;
    color: #34495e;
}

.scenario-item input {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.scenario-item button {
    padding: 0.75rem;
    background-color: white;
    color: #3498db;
    border: 2px solid #eee;
    border-radius: 12px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.scenario-item button:hover {
    border-color: #3498db;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.15);
}

.scenario-results {
    margin-top: 2rem;
}

/* Scenario Comparison Grid */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 15px;
}

.comparison-column {
    padding: 15px;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.comparison-column:hover {
    border-color: #3498db;
    transform: translateY(-3px);
}

.comparison-column h6 {
    margin-top: 0;
    margin-bottom: 15px;
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 5px;
    font-size: 1.1rem;
}

.comparison-column.empty {
    background-color: #f0f0f0;
    color: #999;
}

.scenario-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

/* Alert Dashboard and Indicators */
.alert-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.alert-card {
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    color: white;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.alert-saludable { background-color: #27ae60; }
.alert-normal { background-color: #2ecc71; }
.alert-precaucion { background-color: #f1c40f; color: #333; }
.alert-critico { background-color: #e67e22; }
.alert-negativo { background-color: #e74c3c; }

.be-indicator-container {
    margin-top: 1.5rem;
    background-color: #ddd;
    border-radius: 20px;
    height: 30px;
    position: relative;
    overflow: hidden;
}

.be-progress-bar {
    height: 100%;
    background-color: #3498db;
    transition: width 0.5s ease-in-out;
}

.be-marker {
    position: absolute;
    top: 0;
    width: 2px;
    height: 100%;
    background-color: #2c3e50;
    z-index: 10;
}

.be-label {
    position: absolute;
    top: -25px;
    font-size: 0.8rem;
    font-weight: bold;
    transform: translateX(-50%);
}

/* Modals and Tooltips */
.help-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background-color: #3498db;
    color: white;
    border-radius: 50%;
    font-size: 12px;
    cursor: pointer;
    margin-left: 5px;
    vertical-align: middle;
    font-weight: bold;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.help-icon:hover {
    background-color: #2980b9;
    transform: scale(1.2);
}

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    overflow: auto;
}

.modal-content {
    background-color: #fefefe;
    margin: 10% auto;
    padding: 2rem;
    border-radius: 8px;
    max-width: 500px;
    position: relative;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.close-modal {
    position: absolute;
    right: 20px;
    top: 10px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #aaa;
}

.close-modal:hover {
    color: #333;
}

/* Interactive Cases feedback */
.case-feedback {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 4px;
    display: none;
    background-color: #f8f9fa;
    border-left: 4px solid #3498db;
    font-size: 0.9rem;
}

.case-feedback.visible {
    display: block;
    animation: fadeIn 0.3s;
}

.educational-tips {
    background-color: white;
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid #eee;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: border-color 0.3s ease;
}

.educational-tips:hover {
    border-color: #3498db;
}

.educational-tips h5 {
    color: #2980b9;
    margin-top: 0;
}

.educational-tips p {
    margin-bottom: 0.5rem;
    padding-left: 1.2rem;
    position: relative;
}

.educational-tips p:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Concepts and Cases */
.concepts-grid, .cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.concept-card, .case-card {
    background-color: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #eee;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.concept-card:hover, .case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    border-color: #3498db;
}

.concept-card h4, .case-card h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.concept-card p, .case-card p {
    color: #666;
    line-height: 1.5;
}

.case-card em {
    color: #e74c3c;
    font-weight: bold;
}

/* Export buttons */
.export-buttons {
    margin-top: 1rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Help Page Styles */
.help-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.help-section {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #eee;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.help-section:hover {
    transform: translateY(-5px);
    border-color: #3498db;
}

.help-section h3 {
    color: #2c3e50;
    margin-bottom: 1.2rem;
    text-align: left;
    font-size: 1.3rem;
}

.help-section ul, .help-section ol {
    padding-left: 1.2rem;
    color: #666;
}

.help-section li {
    margin-bottom: 0.8rem;
}

@media (max-width: 768px) {
    header {
        padding: 0.5rem 0;
    }

    .nav-container {
        flex-direction: row; /* Mantener logo y toggle en la misma linea */
        flex-wrap: wrap;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0;
        display: none;
        width: 100%;
        text-align: center;
        margin-top: 1rem;
        background-color: #34495e;
        border-radius: 8px;
        padding: 10px 0;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        width: 100%;
        padding: 1rem;
        border-radius: 0;
    }

    .btn-signup {
        margin-left: 0;
        background-color: transparent !important;
        border-top: 1px solid rgba(255,255,255,0.1);
    }

    .nav-menu.show {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .section {
        padding: 60px 0;
    }

    .section h3 {
        font-size: 1.5rem;
    }
}

/* Home Navigation Cards */
.home-navigation {
    padding: 60px 0;
}

.nav-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: -40px; /* Overlap with hero slightly for better visual integration */
    z-index: 10;
    position: relative;
}

.nav-card {
    background-color: white;
    padding: 2.5rem 2rem;
    border-radius: 12px;
    text-align: center;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid #eee;
}

.nav-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    border-color: #3498db;
}

.nav-card i {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.nav-card:hover i {
    transform: scale(1.1);
}

.nav-card h4 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.nav-card p {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 0;
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }

    .hero {
        padding: 80px 0 60px;
    }

    .hero h2 {
        font-size: 1.8rem;
    }

    .btn-primary {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .nav-cards-grid {
        margin-top: 20px;
    }
}
/* Phase 2: Auth and Course Styles */
.form-control { width: 100%; padding: 10px; margin-bottom: 15px; border: 1px solid #ddd; border-radius: 4px; font-size: 1rem; }
.alert { padding: 10px; margin-bottom: 15px; border-radius: 4px; font-size: 0.9rem; }
.alert-critico { background-color: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.card { background-color: white; padding: 2rem; border-radius: 12px; box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08); border: 1px solid #eee; }
.btn-logout { background-color: #e74c3c; color: white !important; }

/* Progress Tracking Styles */
.concept-card.completed, .case-card.completed {
    border-left: 5px solid #27ae60;
    background-color: #f0fff4;
}

.badge {
    display: inline-block;
    padding: 0.25em 0.6em;
    font-size: 75%;
    font-weight: 700;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 0.25rem;
}

.badge-success {
    color: #fff;
    background-color: #27ae60;
}

.case-opt.btn-success {
    background-color: #27ae60;
    color: white;
    border-color: #27ae60;
}