:root {
    --primary-color: #6366f1; /* Indigo 500 */
    --primary-hover: #4f46e5; /* Indigo 600 */
    --accent-color: #a855f7; /* Purple 500 */
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --light-text: #64748b;
    --white: #ffffff;
    --nav-bg: rgba(255, 255, 255, 0.8);
    --border-color: #e2e8f0;
    --shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05), 0 2px 10px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 8px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

body.theme-dark {
    --bg-color: #0b0f1a;
    --card-bg: #161e31;
    --text-color: #f1f5f9;
    --light-text: #94a3b8;
    --nav-bg: rgba(11, 15, 26, 0.8);
    --border-color: #1e293b;
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --white: #161e31;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Navigation - Floating Modern Style */
header {
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 1.5rem 2rem;
    pointer-events: none;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.7rem 1.5rem;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    box-shadow: var(--shadow);
    pointer-events: auto;
}

.logo {
    font-size: 1.1rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.logo a {
    color: inherit;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 0.25rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.8rem;
    padding: 0.45rem 0.75rem;
    border-radius: 999px;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-links a:hover, .nav-links a.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
}

body.theme-dark .nav-links a:hover, 
body.theme-dark .nav-links a.active {
    background: rgba(99, 102, 241, 0.2);
}

.lang-switch {
    display: flex;
    align-items: center;
    margin-left: 0.5rem;
    padding-left: 0.5rem;
    border-left: 1px solid var(--border-color);
}

.lang-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-color);
    font-weight: 600;
    font-size: 0.8rem;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.lang-btn:hover {
    background: var(--border-color);
}

.lang-flag {
    width: 20px;
    height: 14px;
    object-fit: cover;
    border-radius: 2px;
}

.theme-switch {
    margin-left: 0.25rem;
}

.theme-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-color);
    transition: var(--transition);
}

.theme-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: rotate(15deg);
}

/* Sections */
section {
    padding: 120px 2rem 80px;
    max-width: 1200px;
    margin: 0 auto;
}

h2 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 4rem;
    text-align: center;
    letter-spacing: -0.04em;
    background: linear-gradient(to bottom, var(--text-color), var(--light-text));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2::after {
    display: none;
}

/* Hero Section - Minimalist & Impactful */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: var(--bg-color);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-content h1 {
    font-size: 4.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.05em;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--light-text);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    font-weight: 400;
}

.hero-btns {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Buttons Overhaul */
.btn {
    padding: 0.9rem 2.2rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border: none;
    box-shadow: 0 10px 20px -5px rgba(99, 102, 241, 0.4);
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 25px -5px rgba(99, 102, 241, 0.5);
    color: white;
}

.btn-outline {
    background: transparent !important;
    color: var(--text-color) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: none !important;
}

.btn-outline:hover {
    background: var(--border-color) !important;
    transform: translateY(-3px);
}

/* Projects - Modern Card Layout */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-12px);
    border-color: transparent;
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.1);
}

.project-card:hover::before {
    opacity: 1;
}

.project-image-container {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-image-container img {
    max-width: 100%;
    max-height: 220px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.project-card:hover .project-image-container img {
    transform: scale(1.05);
}

.project-card h3 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    letter-spacing: -0.03em;
    color: var(--text-color);
}

.project-card p {
    color: var(--light-text);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.project-card ul {
    margin: 0 0 0.75rem 0;
    padding-left: 1.25rem;
}

.project-card li {
    margin-bottom: 0.25rem;
    line-height: 1.5;
    color: var(--light-text);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.tag {
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.4rem 1rem;
    border-radius: 999px;
    background: var(--bg-color);
    color: var(--light-text);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.project-card:hover .tag {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    border-color: rgba(99, 102, 241, 0.2);
}

body.theme-dark .tag {
    background: #1e293b;
}

.project-links {
    margin-top: auto;
}

.project-links .btn {
    width: 100%;
    border-radius: var(--radius-md);
}

/* Experience - Refined Timeline */
.experience-page {
    max-width: 900px;
}

.section-title {
    text-align: left;
    font-size: 2.2rem;
    margin: 4rem 0 2rem;
    background: none;
    -webkit-text-fill-color: initial;
    color: var(--text-color);
}

.timeline {
    border-left: 2px solid var(--border-color);
    padding-left: 3rem;
    margin-left: 0.5rem;
}

.timeline-item {
    position: relative;
    margin-bottom: 4rem;
}

.timeline-dot {
    position: absolute;
    left: -3.6rem;
    top: 0.5rem;
    width: 1.2rem;
    height: 1.2rem;
    background: var(--primary-color);
    border: 3px solid var(--bg-color);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

.timeline-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.timeline-date {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    display: block;
}

.timeline-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.timeline-company {
    color: var(--light-text);
    font-weight: 500;
    font-size: 1rem;
    margin-bottom: 1.5rem;
    display: block;
}

.timeline-image {
    margin-top: 1.5rem;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    max-width: 400px;
    background: white;
}

body.theme-dark .timeline-image {
    background: #1e293b;
}

.timeline-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    padding: 0.5rem;
}

/* Skills Overhaul */
.skills-category {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    margin-bottom: 3rem;
}

.category-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.category-title::before {
    content: '';
    width: 4px;
    height: 1.5rem;
    background: var(--primary-color);
    border-radius: 2px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
}

.skill-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition);
}

.skill-card:hover {
    background: var(--card-bg);
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.skill-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.skill-name {
    font-size: 0.85rem;
    font-weight: 600;
}

.skill-logo-img {
    height: 2.5rem; /* Matches the font-size of icons */
    width: auto;
    margin-bottom: 1rem;
    display: block;
    object-fit: contain;
}

/* Specific Skill Icon Colors */
.skill-icon.linux { color: #334155; }
body.theme-dark .skill-icon.linux { color: #f1f5f9; }
.skill-icon.windows { color: #00a4ef; }
.skill-icon.virtualization { color: #6366f1; }
.skill-icon.docker { color: #2496ed; }
.skill-icon.networks { color: #64748b; }
.skill-icon.active-directory { color: #3b82f6; }
.skill-icon.security { color: #0ea5e9; }
.skill-icon.services { color: #6366f1; }
.skill-icon.cisco { color: #00bceb; }

.skill-icon.html5 { color: #e34f26; }
.skill-icon.css3 { color: #1572b6; }
.skill-icon.js { color: #f7df1e; }
.skill-icon.php { color: #777bb4; }
.skill-icon.bash { color: #4eaa25; }
.skill-icon.powershell { color: #012456; }
body.theme-dark .skill-icon.powershell { color: #2ca7f8; }
.skill-icon.python { color: #3776ab; }
.skill-icon.cpp { color: #00599c; }
.skill-icon.mysql { color: #00758f; }
.skill-icon.postgresql { color: #336791; }
.skill-icon.xml { color: #f06529; }
.skill-icon.json { color: #2d3748; }
body.theme-dark .skill-icon.json { color: #f1f5f9; }

.skill-icon.git { color: #f05032; }
.skill-icon.dataviz { color: #6366f1; }
.skill-icon.teamwork { color: #a855f7; }
.skill-icon.problemsolving { color: #6366f1; }
.skill-icon.selflearning { color: #a855f7; }
.skill-icon.customer { color: #6366f1; }

/* Certifications - Modern Grid */
.cert-category .category-title {
    text-align: left;
}

.cert-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    transition: var(--transition);
}

.cert-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.cert-icon {
    width: 48px;
    height: 48px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.cert-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.3;
}

.cert-issuer {
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 600;
}

.cert-date {
    font-size: 0.75rem;
    color: var(--light-text);
}

.cert-info p {
    font-size: 0.9rem;
    color: var(--light-text);
    margin: 0.5rem 0 1rem;
}

/* Contact Methods */
.method-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.method-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.method-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

.method-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.method-card p {
    color: var(--light-text);
    margin-bottom: 1.5rem;
}

/* Footer */
footer {
    padding: 5rem 2rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-color);
    text-align: center;
}

footer p {
    margin-bottom: 2rem;
    color: var(--light-text);
    font-weight: 500;
}

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

.social-links a {
    width: 50px;
    height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-color);
    font-size: 1.25rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

/* Responsive Burger Menu */
.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.burger div {
    width: 25px;
    height: 2px;
    background: var(--text-color);
    transition: var(--transition);
}

@media screen and (max-width: 968px) {
    .nav-links {
        display: none;
    }
    
    .burger {
        display: flex;
    }

    .hero-content h1 {
        font-size: 3rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }

    header {
        padding: 1rem;
    }
}

/* About Page */
.about-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: var(--shadow);
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* Mobile Menu Active State */
.nav-active {
    display: flex !important;
    position: fixed;
    top: 5rem;
    left: 1rem;
    right: 1rem;
    flex-direction: column;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    gap: 1rem;
}

.toggle .line1 { transform: rotate(-45deg) translate(-5px, 5px); }
.toggle .line2 { opacity: 0; }
.toggle .line3 { transform: rotate(45deg) translate(-5px, -5px); }

/* Resume Page */
.resume-page {
    max-width: 900px;
}

.resume-header {
    text-align: center;
    margin-bottom: 4rem;
}

.resume-header h2 {
    margin-bottom: 1rem;
}

.resume-header p {
    color: var(--light-text);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.download-btn {
    font-size: 1rem;
}

.resume-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.resume-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: var(--transition);
}

.resume-section:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.resume-section h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.resume-section h3 i {
    color: var(--primary-color);
}

.resume-info p {
    font-size: 1rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.resume-info p strong {
    color: var(--primary-color);
}

.resume-item {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.resume-item .resume-date {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.resume-item h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0.5rem 0 0.25rem;
    color: var(--text-color);
}

.resume-item p {
    color: var(--light-text);
    font-size: 0.95rem;
}

.resume-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.5rem 1.2rem;
    border-radius: 999px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    border: 1px solid rgba(99, 102, 241, 0.2);
    transition: var(--transition);
}

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

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.contact-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.contact-header h2 {
    margin-bottom: 1rem;
}

.contact-header p {
    color: var(--light-text);
    font-size: 1rem;
}