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

body {
    min-height: 100vh;
    width: 100%;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    width: 100%;
}

input,
button,
textarea,
select {
    font: inherit;
}

a {
    text-decoration: none;
}

button {
    border: none;
    background: none;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding-left: var(--space-12);
    padding-right: var(--space-12);
}

.btn {
    display: inline-block;
    width: fit-content;
}

html {
    scroll-behavior: smooth;
}

:root {
    --text-xs:   clamp(0.6875rem, 1.5vw, 0.75rem);
    --text-sm:   clamp(0.8125rem, 1.8vw, 0.875rem);
    --text-base: clamp(0.9375rem, 2vw, 1rem);
    --text-lg:   clamp(1.125rem, 2.5vw, 1.25rem);
    --text-xl:   clamp(1.25rem, 3vw, 1.5625rem);
    --text-2xl:  clamp(1.5rem, 3.5vw, 1.9375rem);
    --text-3xl:  clamp(1.75rem, 4.5vw, 2.4375rem);
    --text-4xl:  clamp(2rem, 5.5vw, 3.0625rem);
    --text-5xl:  clamp(2.25rem, 6.5vw, 3.8125rem);

    --font-display: 'Syne', sans-serif;
    --font-body: 'DM Sans', sans-serif;

    --weight-light:    300;
    --weight-regular:  400;
    --weight-medium:   500;
    --weight-semibold: 600;
    --weight-bold:     700;
    --weight-black:    800;

    --leading-tight:   1.1;
    --leading-snug:    1.25;
    --leading-normal:  1.5;
    --leading-relaxed: 1.6;

    --letter-tight:  -0.03em;
    --letter-snug:   -0.02em;
    --letter-normal:  0em;
    --letter-wide:    0.08em;
    --letter-wider:   0.12em;

    --space-1:  0.25rem;
    --space-2:  0.5rem;
    --space-3:  0.75rem;
    --space-4:  1rem;
    --space-6:  1.5rem;
    --space-8:  2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-25: 10rem;

    --brand:      #00d4ff;
    --brand-dim:  #00a8cc;
    --brand-glow: rgba(0, 212, 255, 0.12);

    --bg-page:    #080c10;
    --bg-surface: #0e1318;
    --bg-raised:  #151c24;

    --neutral-800: #1a2332;
    --neutral-700: #243040;
    --neutral-500: #4a6278;
    --neutral-400: #6b8299;
    --neutral-200: #9ab0c4;
    --neutral-50:  #dde8f0;

    --text-primary:   #dde8f0;
    --text-secondary: #9ab0c4;
    --text-tertiary:  #6b8299;

    --border:       #1a2332;
    --border-light: rgba(255, 255, 255, 0.06);

    --radius-sm:   0.375rem;
    --radius-md:   0.75rem;
    --radius-lg:   1rem;
    --radius-full: 9999px;

    --shadow-sm:   0 0.125rem 0.5rem rgba(0, 0, 0, 0.3);
    --shadow-md:   0 0.25rem 1.5rem rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 2.5rem rgba(0, 212, 255, 0.15);
}

header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(8, 12, 16, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
}

.nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

nav a {
    text-decoration: none;
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    letter-spacing: var(--letter-wide);
    text-transform: uppercase;
    transition: color 0.2s ease;
}

.nav__links a:hover,
.nav__links a.active {
    color: var(--brand);
}

.nav__logo {
    color: var(--brand);
    font-size: var(--text-base);
    font-weight: var(--weight-black);
    font-family: var(--font-display);
}

.sidebar {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: 280px;
    z-index: 9999;
    background: rgba(8, 12, 16, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--border-light);
    padding: var(--space-8);
    gap: var(--space-8);
}

.sidebar #close {
    color: var(--text-secondary);
    font-size: var(--text-xl);
    cursor: pointer;
    align-self: flex-end;
}

.sidebar #close:hover {
    color: var(--brand);
}

.sidebar a {
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: var(--text-lg);
    font-weight: var(--weight-medium);
    letter-spacing: var(--letter-wide);
    text-transform: uppercase;
    transition: color 0.2s ease;
}

.sidebar a:hover {
    color: var(--brand);
}

#menu {
    display: none;
    cursor: pointer;
    color: var(--text-primary);
    font-size: var(--text-xl);
}

.hero-section {
    background-color: var(--bg-page);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(1px 1px at 10% 20%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 30% 50%, var(--neutral-200) 0%, transparent 100%),
        radial-gradient(1px 1px at 50% 15%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 48% 30%, var(--neutral-400) 0%, transparent 100%),
        radial-gradient(1px 1px at 55% 70%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 20% 80%, var(--neutral-200) 0%, transparent 100%),
        radial-gradient(1px 1px at 60% 60%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 44% 48%, var(--neutral-400) 0%, transparent 100%),
        radial-gradient(1px 1px at 40% 90%, var(--brand) 0%, transparent 100%),
        radial-gradient(2px 2px at 38% 85%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 15% 45%, var(--neutral-200) 0%, transparent 100%),
        radial-gradient(2px 2px at 55% 35%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 5% 60%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 25% 10%, var(--neutral-400) 0%, transparent 100%),
        radial-gradient(1px 1px at 45% 75%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 65% 25%, var(--neutral-200) 0%, transparent 100%),
        radial-gradient(2px 2px at 43% 55%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 18% 15%, var(--neutral-400) 0%, transparent 100%),
        radial-gradient(1px 1px at 35% 65%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 12% 35%, var(--neutral-200) 0%, transparent 100%),
        radial-gradient(2px 2px at 58% 88%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 28% 12%, var(--neutral-400) 0%, transparent 100%),
        radial-gradient(1px 1px at 42% 42%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 50% 92%, var(--neutral-200) 0%, transparent 100%),
        radial-gradient(2px 2px at 22% 58%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 36% 78%, var(--neutral-400) 0%, transparent 100%),
        radial-gradient(1px 1px at 8% 88%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 52% 5%, var(--neutral-200) 0%, transparent 100%),
        radial-gradient(2px 2px at 33% 28%, var(--brand) 0%, transparent 100%),
        radial-gradient(1px 1px at 44% 48%, var(--neutral-400) 0%, transparent 100%);
    opacity: 0.6;
    animation: twinkle 4s ease-in-out infinite alternate;
    z-index: 0;
    pointer-events: none;
}

@keyframes twinkle {
    0%   { opacity: 0.3; }
    100% { opacity: 0.7; }
}

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

.hero__container {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--space-25);
    padding-bottom: var(--space-20);
}

.hero__content {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    max-width: 680px;
}

.hero__greeting {
    font-size: var(--text-sm);
    color: var(--brand);
    font-weight: var(--weight-semibold);
    font-family: var(--font-body);
    letter-spacing: var(--letter-wider);
    text-transform: uppercase;
}

.hero__heading {
    font-size: var(--text-5xl);
    color: var(--text-primary);
    font-weight: var(--weight-black);
    font-family: var(--font-display);
    line-height: var(--leading-tight);
    letter-spacing: var(--letter-snug);
}

.hero__heading .text-brand {
    color: var(--brand);
}

.hero__subtext {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    font-weight: var(--weight-regular);
    font-family: var(--font-body);
    line-height: var(--leading-relaxed);
    max-width: 48ch;
}

.hero__cta {
    display: flex;
    gap: var(--space-4);
    padding-top: var(--space-2);
}

.btn {
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    font-family: var(--font-body);
    letter-spacing: var(--letter-wide);
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn--primary {
    background-color: var(--brand);
    color: var(--bg-page);
}

.btn--primary:hover {
    background-color: var(--brand-dim);
}

.btn--outline {
    border: 1px solid var(--brand);
    color: var(--brand);
}

.btn--outline:hover {
    background-color: var(--brand-glow);
}

.work-section {
    background: linear-gradient(
        -45deg,
        var(--bg-page),
        #080c10,
        #0a1628,
        #080c10
    );
    background-size: 400% 400%;
    animation: gradientShift 8s ease infinite;
    padding-block: var(--space-20);
}

@keyframes gradientShift {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.work {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.work__header {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.work__title {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: var(--weight-bold);
    color: var(--text-primary);
    letter-spacing: var(--letter-snug);
}

.work__subtitle {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--text-tertiary);
}

.work__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.project-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(0, 212, 255, 0.3);
}

.project-card__image {
    overflow: hidden;
}

.project-card__image img {
    transition: transform 0.4s ease;
}

.project-card:hover .project-card__image img {
    transform: scale(1.03);
}

.project-card__content {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.project-card__meta {
    display: flex;
    gap: var(--space-2);
}

.project-card__tag {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    color: var(--brand);
    background-color: var(--brand-glow);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-full);
    padding: var(--space-1) var(--space-3);
    letter-spacing: var(--letter-wide);
    text-transform: uppercase;
}

.project-card__title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--weight-semibold);
    color: var(--text-primary);
}

.project-card__description {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

.project-card__link {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--brand);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-2);
    transition: gap 0.2s ease;
}

.project-card:hover .project-card__link {
    gap: var(--space-3);
}

.about-section {
    background: linear-gradient(
        135deg,
        #080c10,
        #0d1f2d,
        #080c10,
        #081a1a
    );
    background-size: 400% 400%;
    animation: aboutGradient 10s ease infinite;
    padding-block: var(--space-20);
}

@keyframes aboutGradient {
    0%   { background-position: 0% 0%; }
    50%  { background-position: 100% 100%; }
    100% { background-position: 0% 0%; }
}

.about {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.about__headline {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: var(--weight-bold);
    color: var(--text-primary);
    letter-spacing: var(--letter-snug);
    line-height: var(--leading-snug);
    max-width: 22ch;
}

.about__container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    align-items: start;
    gap: var(--space-12);
}

.about__image {
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.about__image img {
    width: 100%;
    height: auto;
    display: block;
}

.about__content {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding-top: var(--space-2);
}

.about__bio {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

.about__skills {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    font-weight: var(--weight-medium);
    color: var(--text-primary);
    line-height: var(--leading-normal);
    padding: var(--space-4) var(--space-6);
    border-left: 2px solid var(--brand);
    background-color: var(--brand-glow);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.about__cta-text {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--text-tertiary);
    line-height: var(--leading-relaxed);
}

.skills-section {
    background: linear-gradient(
        180deg,
        #080c10,
        #0d1a1a,
        #080c10
    );
    background-size: 400% 400%;
    animation: skillsGradient 12s ease infinite;
    padding-block: var(--space-20);
}

@keyframes skillsGradient {
    0%   { background-position: 0% 0%; }
    50%  { background-position: 0% 100%; }
    100% { background-position: 0% 0%; }
}

.skills {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.skills__title {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: var(--weight-bold);
    color: var(--text-primary);
    letter-spacing: var(--letter-snug);
}

.skills__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.skills__category {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-6);
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.skills__category-title {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--weight-bold);
    color: var(--text-tertiary);
    letter-spacing: var(--letter-wide);
    text-transform: uppercase;
}

.skills__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.skill-tag {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--brand);
    background-color: var(--brand-glow);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-full);
    padding: var(--space-1) var(--space-4);
}

.contact-section {
    background: linear-gradient(
        90deg,
        #080c10,
        #0a1628,
        #080c10
    );
    background-size: 400% 400%;
    animation: gradientShift 8s ease infinite;
    padding-block: var(--space-20);
}

.contact {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-12);
    text-align: center;
}

.contact__header {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact__title {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: var(--weight-bold);
    color: var(--text-primary);
    letter-spacing: var(--letter-snug);
}

.contact__subtitle {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

.contact__links {
    display: flex;
    gap: var(--space-6);
}

.contact__card {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8);
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--weight-medium);
    transition: all 0.2s ease;
}

.contact__card i {
    font-size: var(--text-xl);
    color: var(--brand);
}

.contact__card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    background-color: var(--brand-glow);
    color: var(--brand);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-light);
    padding-block: var(--space-6);
}

.footer__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer__text {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

@media(max-width: 1024px) {
    .hero__container { padding-top: var(--space-20); padding-bottom: var(--space-16); }
    .hero__heading { font-size: var(--text-4xl); }
    .work-section { padding-block: var(--space-16); }
    .about-section { padding-block: var(--space-16); }
}

@media(max-width: 800px) {
    .hideOnMobile { display: none; }
    #menu { display: block; }

    .container {
        padding-left: var(--space-6);
        padding-right: var(--space-6);
    }

    .hero__container {
        padding-top: var(--space-20);
        padding-bottom: var(--space-12);
        justify-content: center;
        text-align: center;
    }

    .hero__content { align-items: center; }
    .hero__heading { font-size: var(--text-3xl); }
    .hero__subtext { font-size: var(--text-base); }
    .hero__cta { justify-content: center; }

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

    .about__container { grid-template-columns: 1fr; }
    .about__image { width: 55%; align-self: center; }
    .about__headline { max-width: 100%; font-size: var(--text-2xl); }

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

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

@media(max-width: 480px) {
    .hero__heading { font-size: var(--text-2xl); }
    .hero__cta { flex-direction: column; align-items: center; }
    .about__image { width: 75%; }
    .footer__inner {
        flex-direction: column;
        gap: var(--space-2);
        text-align: center;
    }
}