/* ===== CUSTOM PROPERTIES ===== */

:root
{
    --bg-primary: #0a0a0f;
    --bg-surface: #12121a;
    --bg-elevated: #1a1a2e;
    --border-subtle: #2a2a3e;
    --text-primary: #e0e0e8;
    --text-secondary: #8888a0;
    --text-muted: #555570;
    --accent: #6c63ff;
    --accent-light: #8b83ff;
    --accent-glow: rgba(108, 99, 255, 0.3);
    --accent-secondary: #00d4aa;
    --gradient: linear-gradient(135deg, #6c63ff, #00d4aa);
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET ===== */

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

html
{
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body
{
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

/* Subtle background gradient overlay */
body::before
{
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(108, 99, 255, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 212, 170, 0.03) 0%, transparent 50%);
}

body > *
{
    position: relative;
    z-index: 1;
}

/* ===== PAGE LOADER ===== */

.loader-overlay
{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.loader-overlay.hidden
{
    opacity: 0;
    transform: translateY(-100%);
    pointer-events: none;
}

.loader-initials
{
    font-family: var(--font-heading);
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: loaderPulse 1s ease-in-out infinite;
}

@keyframes loaderPulse
{
    0%
    {
        transform: scale(0.7);
        opacity: 0.5;
    }
    50%
    {
        transform: scale(1.05);
        opacity: 1;
    }
    100%
    {
        transform: scale(1);
        opacity: 0.5;
    }
}

.hero-hidden
{
    opacity: 0;
    transform: translateY(20px);
}

.hero-reveal
{
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease 0.2s, transform 0.6s ease 0.2s;
}

/* ===== SCROLL PROGRESS BAR ===== */

#scrollProgress
{
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: var(--gradient);
    z-index: 1001;
    pointer-events: none;
}

/* ===== HEADER (stacking fix) ===== Was previously bringing naub page on top of header */

header
{
    z-index: 1000;
}

/* ===== NAVIGATION ===== */

#navbar
{
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.nav-logo
{
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links
{
    display: flex;
    gap: 0.5rem;
}

.nav-link
{
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active
{
    color: var(--text-primary);
    background: rgba(108, 99, 255, 0.1);
}

.nav-link.active::after
{
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
}

.nav-toggle
{
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span
{
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== HERO ===== */

.hero
{
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.hero-content
{
    position: relative;
    z-index: 1;
}

.hero-greeting
{
    font-size: 1.1rem;
    color: var(--accent);
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.hero-name
{
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.hero-tagline
{
    font-size: 1.35rem;
    color: var(--text-secondary);
    font-weight: 300;
    margin-bottom: 1rem;
}

.hero-description
{
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

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

.btn
{
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary
{
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover
{
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--accent-glow);
}

.btn-outline
{
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.btn-outline:hover
{
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.hero-bg-glow
{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* ===== SECTIONS (shared) ===== */

.section
{
    max-width: 900px;
    margin: 0 auto;
    padding: 6rem 2rem;
}

.section-title
{
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    position: relative;
    display: inline-block;
}

.section-title::after
{
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--gradient);
    border-radius: 2px;
}

/* ===== ABOUT ===== */

.about-content
{
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 2rem;
}

.about-content p
{
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

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

/* ===== SKILLS ===== */

.skills-grid
{
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.skill-card
{
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: var(--transition);
}

.skill-card:hover
{
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.skill-icon
{
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.skill-card h3
{
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.skill-tags
{
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag
{
    display: inline-block;
    padding: 0.3rem 0.75rem;
    background: rgba(108, 99, 255, 0.1);
    color: var(--accent-light);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(108, 99, 255, 0.2);
    transition: var(--transition);
}

.tag:hover
{
    background: rgba(108, 99, 255, 0.2);
}

/* ===== PROJECT CARD LINKS ===== */

.project-card-link
{
    text-decoration: none;
    color: inherit;
    display: block;
}

/* ===== PROJECTS ===== */

.projects-grid
{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.project-card
{
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.project-card::before
{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient);
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover
{
    border-color: var(--accent);
    transform: translateY(-6px);
    box-shadow: 0 12px 40px var(--accent-glow);
}

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

.project-card-header
{
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.project-icon
{
    font-size: 1.75rem;
}

.project-link-icon
{
    color: var(--text-muted);
    text-decoration: none;
    font-size: 1.25rem;
    transition: var(--transition);
    display: inline-block;
}

.project-link-icon:hover
{
    color: var(--accent);
    transform: translate(2px, -2px);
}

.project-card h3
{
    font-family: var(--font-heading);
    font-size: 1.35rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.project-card p
{
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
    line-height: 1.7;
}

.project-tags
{
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tags .tag
{
    background: rgba(0, 212, 170, 0.1);
    color: var(--accent-secondary);
    border-color: rgba(0, 212, 170, 0.2);
}

.project-tags .tag:hover
{
    background: rgba(0, 212, 170, 0.2);
}

/* ===== EDUCATION TIMELINE ===== */

.timeline
{
    position: relative;
    padding-left: 2rem;
}

.timeline::before
{
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-subtle);
}

.timeline-item
{
    position: relative;
    margin-bottom: 2rem;
}

.timeline-dot
{
    position: absolute;
    left: -2.35rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
    border: 2px solid var(--bg-primary);
}

.timeline-content
{
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: var(--transition);
}

.timeline-content:hover
{
    border-color: var(--accent);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.timeline-content h3
{
    font-family: var(--font-heading);
    font-size: 1.35rem;
    margin-bottom: 0.5rem;
}

.timeline-content .degree
{
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.timeline-content .date
{
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.timeline-content .coursework
{
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== EXPERIENCE TIMELINE ===== */

.timeline-content .role-org
{
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.timeline-content .role-description
{
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== FOOTER ===== */

footer
{
    text-align: center;
    border-top: 1px solid var(--border-subtle);
    padding-top: 4rem;
}

.footer-content
{
    max-width: 500px;
    margin: 0 auto;
}

footer .section-title
{
    display: block;
    text-align: center;
}

footer .section-title::after
{
    left: 50%;
    transform: translateX(-50%);
}

.footer-email
{
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.social-links
{
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.social-links a
{
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    transition: var(--transition);
}

.social-links a:hover
{
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.footer-copy
{
    color: var(--text-muted);
    font-size: 0.85rem;
    padding-bottom: 2rem;
}

/* ===== BACK TO TOP ===== */

#backToTop
{
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 500;
}

#backToTop.visible
{
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#backToTop:hover
{
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 4px 20px var(--accent-glow);
    transform: translateY(-3px);
}

/* ===== SCROLL ANIMATIONS ===== */

.animate
{
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate.in-view
{
    opacity: 1;
    transform: translateY(0);
}

.animate:nth-child(2)
{
    transition-delay: 0.1s;
}

.animate:nth-child(3)
{
    transition-delay: 0.2s;
}

.animate:nth-child(4)
{
    transition-delay: 0.3s;
}

/* ===== PROJECT DETAIL PAGES ===== */

.project-page
{
    max-width: 800px;
    margin: 0 auto;
    padding: 6rem 2rem 4rem;
    min-height: 100vh;
}

.back-link
{
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 2.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.back-link:hover
{
    color: var(--accent);
    background: rgba(108, 99, 255, 0.1);
}

.project-page-title
{
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.project-page-tags
{
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2.5rem;
}

.project-page-body
{
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 2.5rem;
}

.project-page-body p
{
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.8;
}

.project-page-body p:last-child
{
    margin-bottom: 0;
}

.project-page-placeholder
{
    text-align: center;
    padding: 4rem 2rem;
}

.project-page-placeholder .placeholder-icon
{
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.project-page-placeholder h2
{
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.project-page-placeholder p
{
    color: var(--text-muted);
    max-width: 400px;
    margin: 0 auto;
}

/* ===== PAGE TRANSITIONS ===== */

.page-content
{
    opacity: 1;
    transition: opacity 0.3s ease;
}

.page-content.fade-out
{
    opacity: 0;
}

.fade-in
{
    animation: fadeIn 0.4s ease forwards;
}

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

/* ===== RESPONSIVE: TABLET (768px) ===== */

@media screen and (max-width: 768px)
{
    .skills-grid
    {
        grid-template-columns: 1fr;
    }

    .hero-name
    {
        font-size: 3rem;
    }

    .section
    {
        padding: 4rem 1.5rem;
    }

    .section-title
    {
        font-size: 1.85rem;
    }
}

/* ===== RESPONSIVE: MOBILE (600px) ===== */

@media screen and (max-width: 600px)
{
    .nav-links
    {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 10, 15, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-subtle);
        padding: 1rem;
    }

    .nav-links.open
    {
        display: flex;
    }

    .nav-toggle
    {
        display: flex;
    }

    .nav-link
    {
        padding: 0.75rem 1rem;
    }

    .hero
    {
        min-height: 80vh;
    }

    .hero-name
    {
        font-size: 2.5rem;
    }

    .hero-tagline
    {
        font-size: 1.1rem;
    }

    .section
    {
        padding: 3rem 1rem;
    }

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

/* ===== RESPONSIVE: SMALL MOBILE (400px) ===== */

@media screen and (max-width: 400px)
{
    #navbar
    {
        padding: 0.75rem 1rem;
    }

    .hero-cta
    {
        flex-direction: column;
        align-items: center;
    }

    .btn
    {
        width: 100%;
        text-align: center;
    }
}