:root {
    --primary-color: #2563eb;
    --primary-light: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary-color: #10b981;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gray-color: #94a3b8;
    --border-color: #e2e8f0;
    --card-bg: #ffffff;
    --section-bg: #f1f5f9;
    --transition: all 0.3s ease-in-out;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --text-color: #1e293b;
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-light: #60a5fa;
    --primary-dark: #2563eb;
    --secondary-color: #34d399;
    --dark-color: #f8fafc;
    --light-color: #1e293b;
    --gray-color: #cbd5e1;
    --border-color: #334155;
    --card-bg: #1e293b;
    --section-bg: #0f172a;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --text-color: #f8fafc;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--section-bg);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark-color);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 1.8rem;
    color: var(--primary-dark);
}

h3 {
    font-size: 1.3rem;
}

p {
    margin-bottom: 15px;
    color: var(--text-color);
}

/* Language Display Control */
.lang-en {
    display: none;
}

html[lang="en"] .lang-es {
    display: none;
}

html[lang="en"] .lang-en {
    display: inline-block;
}

/* Toggle Buttons */
.toggles-container {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-bottom: 20px;
}

.toggle-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.toggle-btn:hover {
    background-color: var(--primary-light);
    color: white;
}

/* Profile Card */
.profile-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 30px;
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
}

.profile-info {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 20px;
}

.profile-image {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    overflow: hidden;
    border: 5px solid var(--primary-light);
    box-shadow: var(--shadow);
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-header h1 {
    margin-bottom: 5px;
    color: var(--primary-dark);
}

.profile-header h2 {
    color: var(--dark-color);
    margin-bottom: 5px;
    font-weight: 500;
}

.tagline {
    color: var(--gray-color);
    font-style: italic;
    margin-bottom: 15px;
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 10px;
}

.contact-info span {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--gray-color);
}

.contact-info i {
    color: var(--primary-color);
}

.social-buttons {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-secondary {
    background-color: var(--light-color);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 20px;
    overflow-x: auto;
    white-space: nowrap;
}

.tab-btn {
    background: none;
    border: none;
    padding: 15px 20px;
    cursor: pointer;
    font-weight: 500;
    color: var(--gray-color);
    position: relative;
    transition: var(--transition);
}

.tab-btn:after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: transparent;
    transition: var(--transition);
}

.tab-btn.active {
    color: var(--primary-color);
}

.tab-btn.active:after {
    background-color: var(--primary-color);
}

.tab-btn:hover {
    color: var(--primary-color);
}

/* Tab Content */
.tab-content {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 30px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

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

/* Section Titles */
.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

.section-title i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

/* Content Card */
.content-card {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

/* Stats Cards */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.stat-card {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--gray-color);
}

/* Timeline */
.timeline {
    position: relative;
    margin: 40px 0;
}

.timeline:before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 7px;
    width: 3px;
    background-color: var(--primary-light);
}

.timeline-item {
    position: relative;
    padding-left: 30px;
    margin-bottom: 30px;
}

.timeline-dot {
    position: absolute;
    left: 0;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--primary-color);
    border: 3px solid var(--card-bg);
    box-shadow: var(--shadow);
}

.timeline-date {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 5px;
}

.timeline-content {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 15px;
    box-shadow: var(--shadow);
}

.timeline-content h3 {
    margin-bottom: 10px;
}

.timeline-content ul {
    padding-left: 20px;
}

.timeline-content li {
    margin-bottom: 5px;
}

/* Skills */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.skills-column h3 {
    margin-bottom: 15px;
    color: var(--primary-dark);
}

.skill {
    margin-bottom: 15px;
}

.skill-name {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-color);
}

.skill-bar {
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.skill-level {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 4px;
    transition: width 1s ease-in-out;
}

/* Charts */
.chart-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 30px 0;
}

.chart-wrapper {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.chart-wrapper h3 {
    text-align: center;
    margin-bottom: 15px;
    color: var(--primary-dark);
}

canvas {
    width: 100% !important;
    height: auto !important;
}

/* Soft Skills */
.soft-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0 30px;
}

.soft-skill {
    background-color: var(--primary-light);
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.soft-skill:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

/* Languages */
.languages {
    margin: 20px 0;
}

.language {
    margin-bottom: 15px;
}

.language-name {
    font-weight: 500;
    margin-right: 10px;
    color: var(--text-color);
}

.language-level {
    color: var(--gray-color);
}

.language-bar {
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 5px;
}

.language-level-indicator {
    height: 100%;
    background-color: var(--secondary-color);
    border-radius: 4px;
}

/* Education Cards */
.education-cards, .certification-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.education-card, .certification-card {
    display: flex;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    align-items: center;
}

.education-card:hover, .certification-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.education-icon, .certification-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

.education-icon i, .certification-icon i {
    color: white;
    font-size: 1.3rem;
}

/* Project Cards */
.project-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.project-card {
    display: flex;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    align-items: flex-start;
}

.project-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.project-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

.project-icon i {
    color: white;
    font-size: 1.5rem;
}

/* Tools Section */
.tools-section {
    margin-top: 30px;
}

.tools-section h3 {
    margin-bottom: 15px;
    color: var(--primary-dark);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--light-color);
    padding: 15px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.tool-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.tool-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

/* Clients Tab */
.clients-filter {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.client-filter {
    background: none;
    border: 1px solid var(--primary-color);
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    color: var(--primary-color);
    transition: var(--transition);
}

.client-filter.active, .client-filter:hover {
    background-color: var(--primary-color);
    color: white;
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.client-card {
    background-color: var(--light-color);
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.client-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.client-logo {
    width: 60px;
    height: 60px;
    background-color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.client-logo i {
    color: white;
    font-size: 1.5rem;
}

.client-name {
    font-weight: 500;
    color: var(--text-color);
}

.client-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: var(--secondary-color);
    color: white;
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 0.75rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
    overflow: auto;
}

.modal-content {
    background-color: var(--card-bg);
    margin: 10% auto;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    width: 80%;
    max-width: 600px;
    animation: modalAnimation 0.3s ease-in-out;
    color: var(--text-color);
}

@keyframes modalAnimation {
    from {transform: translateY(-50px); opacity: 0;}
    to {transform: translateY(0); opacity: 1;}
}

.close {
    color: var(--gray-color);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: var(--dark-color);
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: inherit;
    background-color: var(--light-color);
    color: var(--text-color);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Footer */
footer {
    text-align: center;
    margin-top: 30px;
    padding: 20px 0;
    color: var(--gray-color);
    border-top: 1px solid var(--border-color);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 10px;
}

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* Media Queries */
@media (max-width: 768px) {
    .profile-info {
        flex-direction: column;
        text-align: center;
    }
    
    .profile-image {
        margin: 0 auto 20px;
    }
    
    .contact-info {
        justify-content: center;
    }
    
    .social-buttons {
        justify-content: center;
    }
    
    .stats-container,
    .skills-container,
    .chart-container,
    .education-cards,
    .certification-cards,
    .project-cards {
        grid-template-columns: 1fr;
    }
    
    .clients-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

@media (max-width: 576px) {
    .tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
    }
    
    .tab-btn {
        flex: 0 0 auto;
    }
    
    .timeline-item {
        padding-left: 25px;
    }
    
    .modal-content {
        width: 95%;
        margin: 5% auto;
    }
    
    .toggles-container {
        flex-direction: column;
        align-items: flex-end;
    }
}