:root {
    --primary-color: #4A7BA7;
    --secondary-color: #2C5282;
    --light-bg: #f8f9fa;
    --border-color: #dee2e6;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--secondary-color);
    line-height: 1.6;
}

.header-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 3rem 0;
    margin-bottom: 2rem;
}

.header-section h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
}

.header-section h2 {
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 3px;
    margin-bottom: 1.5rem;
}

.contact-info {
    background: white;
    color: var(--secondary-color);
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
}

.contact-info a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

.section-title {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--primary-color);
    display: inline-block;
}

.experience-item, .education-item {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: white;
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.experience-item:hover, .education-item:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    transform: translateX(5px);
}

.job-title {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.2rem;
}

.company-name {
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 1rem;
}

.date-range {
    color: #6c757d;
    font-style: italic;
    font-size: 0.9rem;
}

.skill-badge {
    background: var(--primary-color);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    display: inline-block;
    margin: 0.3rem;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.skill-badge:hover {
    background: var(--secondary-color);
    transform: scale(1.05);
}

.skill-category {
    margin-bottom: 1.5rem;
}

.skill-category-title {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.cert-item {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--border-color);
}

.cert-item:last-child {
    border-bottom: none;
}

.cert-item i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.sticky-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.sticky-nav .nav {
    padding: 1rem 0;
}

.sticky-nav .nav-link {
    color: var(--secondary-color);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.sticky-nav .nav-link:hover {
    background: var(--light-bg);
    color: var(--primary-color);
}

.sticky-nav .nav-link.active {
    background: var(--primary-color);
    color: white;
}

.resume-section {
    padding: 3rem 0;
    scroll-margin-top: 80px;
}

.resume-section:not(:last-child) {
    border-bottom: 2px solid var(--border-color);
}

#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    z-index: 1000;
}

#back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}

#back-to-top.show {
    opacity: 1;
    visibility: visible;
}

html {
    scroll-behavior: smooth;
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.summary-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--secondary-color);
}

/* PDF and Print Styles */
@media print {
    .header-section {
        background: var(--primary-color);
        page-break-after: avoid;
    }

    .experience-item, .education-item {
        page-break-inside: avoid;
        break-inside: avoid;
    }

    .skill-category {
        page-break-inside: avoid;
        break-inside: avoid;
    }

    .cert-item {
        page-break-inside: avoid;
        break-inside: avoid;
    }

    .section-title {
        page-break-after: avoid;
        break-after: avoid;
    }

    .resume-section {
        page-break-before: auto;
        break-before: auto;
    }

    .sticky-nav, #back-to-top, footer {
        display: none !important;
    }

    body {
        background: white;
    }

    .experience-item:hover, .education-item:hover {
        transform: none;
    }
}

/* PDF-specific styles (applied via class) */
.pdf-mode .sticky-nav,
.pdf-mode #back-to-top,
.pdf-mode footer,
.pdf-mode button[onclick="downloadResumePDF()"] {
    display: none !important;
}

.pdf-mode .experience-item,
.pdf-mode .education-item,
.pdf-mode .skill-category,
.pdf-mode .cert-item {
    page-break-inside: avoid;
    break-inside: avoid;
}

.pdf-mode .section-title {
    page-break-after: avoid;
    break-after: avoid;
}

@media (max-width: 768px) {
    .header-section h1 {
        font-size: 2rem;
    }
    .header-section h2 {
        font-size: 1.2rem;
    }
    .contact-info {
        font-size: 0.9rem;
    }
    .sticky-nav .nav {
        flex-wrap: wrap;
    }
    .sticky-nav .nav-link {
        font-size: 0.85rem;
        padding: 0.4rem 0.6rem;
    }
}