:root {
    --bg-primary: #030308;
    --bg-secondary: #080812;
    --bg-card: #0e0e1e;
    --bg-card-hover: #161630;
    --text-primary: #e8e8f0;
    --text-secondary: #c0c0d0;
    --text-muted: #9090a8;
    --accent: #ffffff;
    --accent-hover: #ccccdd;
    --accent-light: rgba(100, 130, 255, 0.08);
    --accent-glow: rgba(80, 120, 255, 0.06);
    --gradient-start: #ffffff;
    --gradient-end: #8899cc;
    --border: #1a1a35;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.55);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 20px 45px rgba(0, 0, 0, 0.7);
    --nav-height: 72px;
    --radius: 12px;
    --radius-sm: 8px;
    --max-width: 1140px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    transition: background-color var(--transition), color var(--transition);
    overflow-x: hidden;
}

#threeBgCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

nav,
section,
footer,
.mobile-menu {
    position: relative;
    z-index: 1;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition);
}

img {
    max-width: 100%;
    display: block;
}

/* ===== Utilities ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
    position: relative;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 64px;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 4px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
    font-family: inherit;
    letter-spacing: 0.01em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--bg-primary);
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--accent);
    border-color: var(--accent);
}

.btn-outline:hover {
    background: var(--accent);
    color: var(--bg-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    background: rgba(3, 3, 10, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition), border-color var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.nav-logo {
    font-size: 1rem;
    font-weight: 800;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-primary);
    letter-spacing: 0.05em;
    transition: all var(--transition);
}

.nav-logo:hover {
    opacity: 0.8;
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    transition: width var(--transition);
    border-radius: 1px;
}

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

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

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    cursor: pointer;
    color: var(--text-primary);
    padding: 8px;
    border-radius: 50%;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.theme-toggle:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}



/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
    transition: all 0.3s ease;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all 0.3s ease;
}

.hamburger::before {
    transform: translateY(-7px);
}

.hamburger::after {
    transform: translateY(7px);
}

.hamburger.open {
    background: transparent;
}

.hamburger.open::before {
    transform: rotate(45deg);
}

.hamburger.open::after {
    transform: rotate(-45deg);
}

.mobile-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(3, 3, 10, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transform: translateY(-120%);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
}

.mobile-menu.open {
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu .nav-link {
    font-size: 1.1rem;
    padding: 8px 0;
}

.mobile-menu .theme-toggle {
    width: 100%;
    border-radius: var(--radius-sm);
    gap: 8px;
}

.toggle-label {
    font-size: 0.95rem;
    font-weight: 500;
}

@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }

    .mobile-menu-btn {
        display: block;
    }
}

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--nav-height);
    position: relative;
    overflow: hidden;
}



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

.hero-greeting {
    font-size: 1.15rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero-name {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 900;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    letter-spacing: -0.04em;
    line-height: 1.1;
}

.hero-tagline {
    font-size: clamp(1.2rem, 3vw, 1.75rem);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 20px;
}

.hero-description {
    max-width: 580px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    color: var(--text-muted);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-socials {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.social-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: all var(--transition);
}

.social-icon:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-light);
    transform: translateY(-3px);
}

/* Hero Animations */
.animate-in {
    opacity: 0;
    transform: translateY(25px);
    animation: fadeInUp 0.7s ease forwards;
}

.delay-1 {
    animation-delay: 0.15s;
}

.delay-2 {
    animation-delay: 0.3s;
}

.delay-3 {
    animation-delay: 0.45s;
}

.delay-4 {
    animation-delay: 0.6s;
}

.delay-5 {
    animation-delay: 0.75s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Skills ===== */
.skills-section {
    background: transparent;
}

.skills-grid-horizontal {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    margin-bottom: 64px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius);
    min-width: 120px;
    width: 140px;
    text-align: center;
    transition: all var(--transition);
    animation: fadeInUp 0.5s ease backwards;
}

/* Stagger animation for items */
.skill-item:nth-child(even) {
    animation-delay: 0.1s;
}

.skill-item:nth-child(odd) {
    animation-delay: 0.2s;
}

.skill-item:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.skill-item i {
    font-size: 3.5rem;
    display: inline-block;
    transition: transform var(--transition);
}

.skill-item svg.colored-svg,
.skill-item img {
    width: 3.5rem;
    height: 3.5rem;
    object-fit: contain;
    transition: transform var(--transition);
}

.skill-item svg.colored-svg {
    stroke: var(--accent);
    /* Fallback color for SVGs */
}

/* Specific colors for SVGs if wanted, but accent is fine */

.skill-item:hover i,
.skill-item:hover svg,
.skill-item:hover img {
    transform: scale(1.1);
}

.skill-item span {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Soft Skills */
.soft-skills-container {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.02);
    padding: 32px;
    border-radius: var(--radius);
    border-top: 1px solid var(--border);
}

.soft-skills-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.soft-skills-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.skill-tag.soft {
    background: rgba(100, 130, 255, 0.1);
    color: var(--text-primary);
    border: none;
    /* Border clipped by clip-path, so remove it */
    border-radius: 0;
    padding: 10px 24px;
    font-size: 0.95rem;
    position: relative;
    clip-path: polygon(12px 0, 100% 0,
            100% calc(100% - 12px),
            calc(100% - 12px) 100%,
            0 100%,
            0 12px);
    transition: all var(--transition);
}

.skill-tag.soft:hover {
    background: var(--accent);
    color: var(--bg-primary);
    transform: translateY(-2px);
    clip-path: polygon(0 0, 100% 0,
            100% 100%,
            0 100%,
            0 0);
    /* Revert to rectangle on hover for effect? Or keep cut? Keeping cut is safer. */
    clip-path: polygon(12px 0, 100% 0,
            100% calc(100% - 12px),
            calc(100% - 12px) 100%,
            0 100%,
            0 12px);
    box-shadow: 0 5px 15px rgba(100, 130, 255, 0.4);
}

/* ===== Projects ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.project-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: all var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
}

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

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    color: var(--accent);
}

.project-github-link {
    color: var(--text-muted);
    transition: color var(--transition);
}

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

.project-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    flex-grow: 1;
    line-height: 1.7;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
}

.tech-tag {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    font-family: 'SF Mono', 'Fira Code', monospace;
}

/* ===== Achievements ===== */
.achievements-section {
    background: transparent;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 64px;
}

.achievement-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 40px 32px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-align: center;
    transition: all var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.achievement-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.achievement-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.achievement-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.achievement-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.achievement-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Education */
.education-section {
    opacity: 0;
    transform: translateY(30px);
}

.education-section.visible {
    opacity: 1;
    transform: translateY(0);
}

.education-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 32px;
    color: var(--text-primary);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.education-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 28px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-align: center;
    transition: all var(--transition);
}

.education-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
}

.education-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.education-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.education-detail {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--accent);
}

/* ===== Contact ===== */

/* Outer wrapper — animated gradient border via pseudo-element */
.contact-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    background: rgba(10, 10, 30, 0.75);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 56px 48px;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
}

/* Animated gradient border */
.contact-content::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 1.5px;
    background: linear-gradient(135deg, rgba(100, 140, 255, 0.5), rgba(200, 120, 255, 0.3), rgba(100, 140, 255, 0.5));
    background-size: 200% 200%;
    animation: gradientShift 6s ease infinite;
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

.contact-content.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Tagline area */
.contact-tagline {
    margin-bottom: 36px;
}

.contact-emoji {
    font-size: 3rem;
    margin-bottom: 16px;
    line-height: 1;
}

.contact-text {
    font-size: 1.1rem;
    margin-bottom: 0;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ---- Contact cards row ---- */
.contact-cards-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 28px 16px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.35s ease;
    text-decoration: none;
    color: inherit;
    cursor: default;
}

a.contact-card {
    cursor: pointer;
}

.contact-card:hover {
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(100, 140, 255, 0.35);
    box-shadow: 0 12px 32px rgba(80, 120, 255, 0.15);
}

.contact-card-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(100, 140, 255, 0.15), rgba(200, 120, 255, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    margin-bottom: 4px;
}

.contact-card-label {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
}

.contact-card-value {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    word-break: break-word;
}

/* CTA button glow */
.contact-btn {
    font-size: 1.1rem;
    padding: 16px 52px;
    border-radius: 12px;
    position: relative;
}

.contact-btn:hover {
    box-shadow: 0 0 30px rgba(100, 140, 255, 0.35), 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* Responsive: stack cards on mobile */
@media (max-width: 600px) {
    .contact-cards-row {
        grid-template-columns: 1fr;
    }

    .contact-content {
        padding: 40px 24px;
    }
}

/* ===== Footer ===== */
.footer {
    background: transparent;
    padding: 48px 0;
    text-align: center;
    border-top: 1px solid var(--border);
}

.footer-socials {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 20px;
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 6px;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== Scroll Animations ===== */
[data-animate] {
    transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .section {
        padding: 72px 0;
    }

    .section-title {
        margin-bottom: 48px;
    }

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

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .contact-content {
        padding: 36px 24px;
    }

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

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

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

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

@media (max-width: 480px) {
    .hero-name {
        font-size: 2.4rem;
    }

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

    .hero-description {
        font-size: 1rem;
    }
}

/* Glass cards */
.skill-category,
.project-card,
.achievement-card,
.education-card,
.contact-content {
    background: rgba(10, 10, 30, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.skill-category:hover,
.project-card:hover,
.achievement-card:hover {
    background: rgba(20, 20, 50, 0.8);
}

/* ===== Preview-Image Card (Frost-Cast & RecipeBook) ===== */

/* Override the card's default padding so the image sits flush at the top */
.project-card--preview {
    padding: 0;
    overflow: hidden;
}

/* Image wrapper — full width, fixed height */
.project-preview-img-wrap {
    width: 100%;
    height: 190px;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.project-preview-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    display: block;
}

/* Text body area gets the same padding as other cards */
.project-card-body {
    padding: 24px 28px 28px;
    display: flex;
    flex-direction: column;
    flex: 1;
}