/* CSS Variables for consistency and maintainability */
:root {
    --font-ui: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    --font-serif: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
    --color-bg: rgb(28, 26, 41);
    --color-text: #e0def4;
    --color-accent: rgb(196, 167, 231);
    --color-muted: rgb(87, 82, 121);
    --color-border: rgb(54, 51, 71);
    --color-card-bg: rgba(224, 222, 244, 0.05);
    --color-card-border: rgba(224, 222, 244, 0.12);
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s ease;
    --transition-slow: 0.6s ease;
    --border-radius: 12px;
    --border-radius-small: 8px;
    --shadow-card: 0 2px 12px rgba(0,0,0,0.15);
    --shadow-hover: 0 12px 35px rgba(196,167,231,0.18), 0 8px 18px rgba(0,0,0,0.25);
}

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

body {
    font-family: var(--font-ui);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Utility Classes */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-center { justify-content: center; align-items: center; }
.flex-between { justify-content: space-between; }
.flex-end { justify-content: flex-end; }
.flex-wrap { flex-wrap: wrap; }
.gap-sm { gap: 12px; }
.gap-md { gap: 15px; }
.gap-lg { gap: 20px; }

.transition-fast { transition: all var(--transition-fast); }
.transition-smooth { transition: all var(--transition-smooth); }
.transition-slow { transition: all var(--transition-slow); }

.hover-lift:hover { transform: translateY(-6px) scale(1.01); }
.hover-accent:hover { color: var(--color-accent); }

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    padding: 120px 0 60px;
    border-bottom: none;
}

nav {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 80px;
    position: relative;
}

.nav-links {
    position: fixed;
    top: 20px;
    left: 60%;
    transform: translateX(-30%);
    z-index: 1000;
    display: flex;
    gap: 15px;
    list-style: none;
    justify-content: center;
}

/* Reusable link styles with underline effect */
.link-underline {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-smooth);
    font-family: var(--font-ui);
    font-weight: 500;
    position: relative;
    padding-bottom: 4px;
}

.link-underline:hover { color: var(--color-accent); }

.link-underline::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -6px;
    width: 100%;
    height: 3px;
    background-color: var(--color-text);
    border-radius: 2px;
    transform: translateX(-50%) scaleX(0);
    transform-origin: center;
    transition: transform 200ms ease;
}

.link-underline:hover::after { 
    transform: translateX(-50%) scaleX(1);
}

.nav-links a {
    font-size: 14px;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

/* Site brand */
.site-brand {
    position: fixed;
    left: 20px;
    top: 20px;
    font-size: 16px;
    letter-spacing: -0.02em;
    line-height: 1;
    padding: 4px 0;
    z-index: 1000;
}

.hero {
    margin-bottom: 60px;
}

/* Heading styles */
.hero h1 {
    font-family: var(--font-ui);
    font-size: clamp(28px, 6vw, 42px);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 48px;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.tagline {
    font-family: var(--font-ui);
    font-size: clamp(20px, 5.5vw, 2.5rem);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 32px;
    line-height: 1.375;
    letter-spacing: -0.025em;
    text-align: center;
    max-width: 725px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 18px;
    color: var(--color-text);
    margin-bottom: 40px;
    max-width: 650px;
    font-weight: 400;
    line-height: 1.6;
}

/* Reusable accent link style */
.link-accent {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-smooth);
    border-bottom: 3px solid var(--color-text);
    border-radius: 2px;
}

.link-accent:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-text);
}

/* Button and CTA styles */
.cta-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    text-decoration: none;
    border-radius: var(--border-radius-small);
    font-weight: 500;
    transition: all var(--transition-smooth);
    border: none;
    cursor: pointer;
    display: inline-block;
}

.btn-primary {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid rgba(196, 167, 231, 0.4);
    transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.btn-primary:hover {
    background-color: rgba(196, 167, 231, 0.12);
    border-color: rgba(196, 167, 231, 0.6);
    transform: translateY(-1px);
}

.btn-secondary {
    border: 1px solid rgba(224, 222, 244, 0.3);
    color: var(--color-text);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Main Content */
main {
    padding: 60px 0;
}

/* Section styles */
.section {
    margin-bottom: 80px;
}

.section h2 {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 400;
    color: var(--color-text);
    margin-bottom: 30px;
    letter-spacing: -0.05em;
    line-height: 1;
}

/* Section dividers */
.section + .section { 
    border-top: 1px solid var(--color-border); 
    padding-top: 40px; 
}

/* Socials section adjustments */
#socials.section { 
    margin-bottom: 12px; 
    margin-top: -30px; 
}

#socials + #education { 
    border-top: none; 
    padding-top: 0; 
}

#education {
    border-top: 1px solid var(--color-border);
    padding-top: 40px;
}

/* About Section */
.section .about-title {
    text-align: center;
    font-size: 5.5rem !important;
    font-weight: 450;
    color: var(--color-text);
    margin-bottom: 40px;
    line-height: 1.375;
    letter-spacing: -0.025em;
}

.about-content {
    max-width: 725px;
    margin: 0 auto;
}

.about-content p {
    margin-bottom: 24px;
    line-height: 1.75;
    color: var(--color-text);
    font-size: 1rem;
    text-align: left;
}

/* Reusable about link style */
.about-link {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-smooth);
}

.about-link:hover {
    color: #a78bfa;
}

/* Skills and tags */
.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-tag {
    background-color: rgba(224, 222, 244, 0.1);
    color: var(--color-text);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 14px;
}

.skills-section h3 {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 400;
    letter-spacing: -0.05em;
    line-height: 1;
    color: var(--color-text);
    margin-bottom: 20px;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* Reusable card styles */
.card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--border-radius);
    padding: 30px;
    position: relative;
    overflow: hidden;
    transition: transform 250ms ease, box-shadow 300ms ease, border-color 300ms ease;
    will-change: transform;
}

.card:hover {
    transform: translateY(-6px) scale(1.01);
    border-color: rgba(196, 167, 231, 0.45);
    box-shadow: var(--shadow-hover);
}

/* Card sweep effect */
.card::after {
    content: "";
    position: absolute;
    top: -60%;
    left: -80%;
    width: 50%;
    height: 220%;
    background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,0.08) 50%, transparent 100%);
    transform: translateX(-120%) rotate(25deg);
    transition: transform 600ms ease;
    pointer-events: none;
}

.card:hover::after {
    transform: translateX(220%) rotate(25deg);
}

/* Card content styles */
.card h3 {
    font-family: var(--font-serif);
    color: var(--color-text);
    font-size: 22px;
    margin-bottom: 15px;
    font-weight: 400;
    letter-spacing: -0.05em;
    line-height: 1;
}

.card p {
    color: var(--color-text);
    margin-bottom: 20px;
    font-weight: 400;
}

.project-links {
    display: flex;
    gap: 15px;
}

.project-links a {
    color: var(--color-muted);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-smooth);
}

.project-links a:hover {
    color: #8b5cf6;
}

/* Project tech tags */
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

/* Experience Section */
.experience-item {
    border-left: 2px solid rgba(224, 222, 244, 0.2);
    padding-left: 30px;
    margin-bottom: 40px;
    position: relative;
}

.experience-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    background-color: #6366f1;
    border-radius: 50%;
}

.experience-item h3 {
    font-family: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
    color: #e0def4;
    font-size: 18px;
    margin-bottom: 5px;
    font-weight: 400;
    letter-spacing: -0.05em;
    line-height: 1;
}

.experience-item .company {
    color: #6366f1;
    font-weight: 500;
    margin-bottom: 5px;
}

.experience-item .date {
    color: rgb(87, 82, 121);
    font-size: 14px;
    margin-bottom: 15px;
    font-weight: 400;
}

.experience-item p {
    color: rgb(87, 82, 121);
    font-weight: 400;
}

/* Contact Section */
.contact-content {
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.contact-content p {
    color: rgb(87, 82, 121);
    margin-bottom: 30px;
    font-size: 18px;
    font-weight: 400;
}

/* Footer */
footer {
    border-top: 1px solid rgba(224, 222, 244, 0.1);
    padding: 40px 0;
    text-align: center;
    color: #e0def4;
    opacity: 0.6;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        gap: 20px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 18px;
    }

    .about-content {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .cta-buttons {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        -webkit-box-align: start;
        -ms-flex-align: start;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .nav-links {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
    }

    .hero h1 {
        font-size: 32px;
    }

    .projects-grid {
        -ms-grid-columns: 1fr;
        grid-template-columns: 1fr;
    }
}

/* Skills grid */
.skills-main-title {
    text-align: left;
    font-family: var(--font-ui);
    color: var(--color-text);
    font-size: 32px;
    margin-bottom: 28px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.skill-header h3 {
    font-size: 18px;
    color: var(--color-text);
    font-weight: 600;
}

.skill-icon { 
    font-size: 18px; 
    opacity: 0.9;
    transition: transform 250ms ease, filter 250ms ease;
}

.skill-list {
    list-style: disc inside;
    display: flex;
    flex-direction: column;
    gap: 10px;
    color: var(--color-text);
}

.skill-list li { opacity: 0.9; }

/* Skill category hover effect */
.card:hover .skill-icon {
    transform: translateY(-1px) rotate(-6deg);
    filter: drop-shadow(0 2px 6px rgba(196,167,231,0.35));
}



/* Responsive design for skills grid */
@media (max-width: 1024px) {
    .skills-grid { 
        grid-template-columns: repeat(2, 1fr); 
    }
}

@media (max-width: 640px) {
    .skills-grid { 
        grid-template-columns: 1fr; 
    }
}

/* Reduce motion preferences */
@media (prefers-reduced-motion: reduce) {
    .card, .card::after, .skill-icon {
        transition: none;
    }
}

/* Education */
.education-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.education-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--border-radius);
    padding: 16px 20px;
}

.edu-left h3 {
    font-size: 18px;
    color: var(--color-text);
    margin-bottom: 6px;
}

.edu-meta {
    color: var(--color-muted);
    font-size: 14px;
}

.edu-right {
    color: var(--color-text);
    opacity: 0.9;
    font-size: 14px;
}

/* Education list style */
.edu-list { 
    border: none; 
    border-radius: 0; 
    overflow: visible; 
}

.edu-row {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 18px 0;
    background: transparent;
    border-top: 1px solid var(--color-border);
}

.edu-row:first-child { 
    border-top: 1px solid var(--color-border); 
}

.edu-row:hover { 
    background: rgba(224, 222, 244, 0.03); 
}

.edu-title { 
    color: var(--color-text); 
    font-weight: 600; 
    font-size: 17px; 
}

.edu-sub { 
    color: var(--color-muted); 
    font-size: 14px; 
    margin-top: 4px; 
    font-style: italic; 
}

.edu-side { 
    color: var(--color-text); 
    opacity: 0.9; 
    font-size: 14px; 
    white-space: nowrap; 
}

/* Project card specific styles */
.project-links {
    margin-top: auto;
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-bottom: 2px;
    padding-top: 16px;
}

.project-card { 
    padding-bottom: 16px; 
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    header { padding: 80px 0 40px; }
    .site-brand { top: 14px; left: 12px; font-size: 14px; }
    .nav-links {
        top: 14px; 
        right: 12px; 
        left: auto; 
        transform: none;
        gap: 12px; 
        flex-wrap: wrap; 
        display: flex;
    }
    .nav-links a { font-size: 12px; }
    .projects-grid { grid-template-columns: 1fr; }
    
    .about-content { 
        grid-template-columns: 1fr; 
        gap: 30px; 
    }
    
    .cta-buttons { 
        flex-direction: column; 
        align-items: flex-start; 
    }
    
    .edu-row { 
        grid-template-columns: 1fr; 
        gap: 6px; 
    }
    
    .edu-side { 
        align-self: flex-start; 
    }
}

@media (max-width: 480px) {
    .nav-links { display: flex; }
    .hero h1 { font-size: clamp(22px, 8vw, 32px); }
    .tagline { font-size: clamp(18px, 6vw, 24px); }
}

/* Quote form */
.quote-wrapper { max-width: 700px; margin: 0 auto; }

/* Form styles */
.quote-form { 
    display: flex; 
    flex-direction: column; 
    gap: 16px; 
}

.form-grid { 
    display: grid; 
    grid-template-columns: repeat(2, 1fr); 
    gap: 16px; 
}

.form-row { 
    display: flex; 
    flex-direction: column; 
    gap: 8px; 
}

.form-row label { 
    color: var(--color-text); 
    font-size: 14px; 
    opacity: 0.9; 
}

.form-row input, .form-row textarea {
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    color: var(--color-text);
    border-radius: 10px;
    padding: 12px 14px;
    font-size: 14px;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-row input::placeholder, .form-row textarea::placeholder { 
    color: rgba(224, 222, 244, 0.6); 
}

.form-row input:focus, .form-row textarea:focus {
    border-color: rgba(196, 167, 231, 0.45);
    box-shadow: 0 0 0 3px rgba(196, 167, 231, 0.12);
}

.form-actions { 
    display: flex; 
    align-items: center; 
    gap: 12px; 
    flex-wrap: wrap; 
}

.form-hint { 
    color: var(--color-muted); 
    font-size: 14px; 
}

.form-success { 
    color: #a3e635; 
    font-size: 14px; 
    margin-top: 8px; 
}

@media (max-width: 640px) { 
    .form-grid { 
        grid-template-columns: 1fr; 
    } 
}

/* Social icons */
.social-icon { 
    display: inline-flex; 
    align-items: center; 
    justify-content: center; 
    text-decoration: none; 
    color: var(--color-text); 
}

.social-icon:hover { 
    color: var(--color-text); 
}

.icon { 
    width: 26px; 
    height: 26px; 
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* About page adjustments */
.about-page header { 
    padding: 36px 0 18px; 
}

.about-page .section { 
    margin-bottom: 32px; 
}

.about-page #about.section { 
    padding-top: 0; 
}