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

:root {
    --bg-primary: #0f1419;
    --bg-secondary: #1a1f2e;
    --bg-tertiary: #252b3b;
    --text-primary: #e6e8eb;
    --text-secondary: #a8abb2;
    --accent-primary: #58a6ff;
    --accent-secondary: #79c0ff;
    --border-color: #30363d;
    --shadow: rgba(0, 0, 0, 0.3);
    --timeline-line: #30363d;
    --timeline-marker: #58a6ff;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Navigation */
#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(15, 20, 25, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: background-color 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-brand:hover {
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-primary);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
    background: linear-gradient(rgba(15, 20, 25, 0.7), rgba(15, 20, 25, 0.7)), url('img/background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero-content {
    max-width: 800px;
}

.profile-image {
    margin-bottom: 2rem;
}

.profile-image img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--accent-primary);
    box-shadow: 0 10px 40px var(--shadow);
}

#hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 700;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    font-weight: 500;
}

.social-links a:hover {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Sections */
section {
    padding: 5rem 0;
}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--text-primary);
    position: relative;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 2px;
}

/* About Section */
#about {
    background-color: var(--bg-secondary);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

/* Experience Section */
.experience-grid {
    max-width: 1000px;
    margin: 0 auto;
}

.experience-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    align-items: start;
}

.experience-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background-color: #E8E6E3;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    height: 150px;
}

.experience-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.logo-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
}

.logo-placeholder span {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1.1rem;
}

.experience-content {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.experience-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px var(--shadow);
}

.experience-content h3 {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.experience-content h4 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.experience-content .period {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    font-style: italic;
}

.experience-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tag {
    background-color: var(--bg-tertiary);
    color: var(--accent-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
}

/* Education Section */
#education {
    background-color: var(--bg-secondary);
}

.education-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
    align-items: start;
}

.education-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background-color: #E8E6E3;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    height: 150px;
}

.education-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.education-content {
    background-color: var(--bg-tertiary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.education-content h3 {
    font-size: 1.75rem;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.education-content h4 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.education-content .period {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    font-style: italic;
}

.education-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Contact Section */
.contact-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.contact-content > p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    font-size: 1.05rem;
}

.contact-link:hover {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow);
}

.contact-link i {
    font-size: 1.25rem;
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

footer p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Resume Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    overflow: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease;
}

.modal-close:hover {
    color: var(--accent-primary);
}

.modal-body {
    flex: 1;
    overflow: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#pdf-canvas {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.pdf-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-top: 1rem;
    padding: 1rem;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
}

.pdf-controls button {
    padding: 0.5rem 1rem;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.pdf-controls button:hover:not(:disabled) {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.pdf-controls button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#page-info {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent-primary);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background-color: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }

    #hero h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    .profile-image img {
        width: 150px;
        height: 150px;
    }

    section h2 {
        font-size: 2rem;
    }

    .social-links {
        flex-direction: column;
        align-items: center;
    }

    .experience-item,
    .education-item {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .experience-logo,
    .education-logo {
        height: 120px;
    }

    .experience-content,
    .education-content {
        padding: 1rem;
    }

    .nav-container {
        padding: 1rem;
    }

    .modal-content {
        width: 95%;
        max-height: 95vh;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1rem;
    }

    .pdf-controls {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .nav-links {
        gap: 0.75rem;
        font-size: 0.9rem;
    }

    section {
        padding: 3rem 0;
    }

    #hero {
        padding: 5rem 1rem 3rem;
    }
}