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

:root {
    /* Colors */
    --black:       #000000;
    --black-1:     #080808;
    --black-2:     #0d0d0d;
    --black-3:     #111111;
    --black-4:     #1a1a1a;
    --black-5:     #222222;

    --blue:        #3b82f6;
    --blue-dim:    #1d4ed8;
    --blue-glow:   rgba(59, 130, 246, 0.15);
    --blue-border: rgba(59, 130, 246, 0.25);

    --white:       #ffffff;
    --grey-1:      #f1f5f9;
    --grey-2:      #94a3b8;
    --grey-3:      #475569;
    --grey-4:      #1e293b;

    /* Typography */
    --font-sans:  'Inter', system-ui, sans-serif;
    --font-mono:  'JetBrains Mono', monospace;

    /* Spacing */
    --nav-h: 64px;

    /* Transitions */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
}

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

body {
    background-color: var(--black);
    color: var(--grey-1);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

ul { list-style: none; }

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

/* ============================================================
   NOISE OVERLAY
   ============================================================ */
.noise {
    pointer-events: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ============================================================
   CURSOR GLOW
   ============================================================ */
.cursor-glow {
    pointer-events: none;
    position: fixed;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59,130,246,0.06) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    z-index: 0;
    transition: opacity 0.3s var(--ease);
    will-change: transform;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
    border-bottom: 1px solid transparent;
}

.nav.scrolled {
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-color: rgba(255, 255, 255, 0.05);
}

.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.nav__logo {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 500;
    color: var(--white);
    letter-spacing: -0.02em;
    transition: opacity 0.2s;
}
.nav__logo:hover { opacity: 0.7; }

.logo-bracket {
    color: var(--blue);
}

.nav__links {
    display: flex;
    gap: 2.5rem;
}

.nav__link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--grey-2);
    letter-spacing: 0.02em;
    position: relative;
    transition: color 0.2s;
}
.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--blue);
    transition: width 0.3s var(--ease);
}
.nav__link:hover { color: var(--white); }
.nav__link:hover::after { width: 100%; }

.nav__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav__burger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--grey-2);
    border-radius: 2px;
    transition: transform 0.3s var(--ease), opacity 0.3s;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.97);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--ease);
}
.mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}
.mobile-menu ul {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    text-align: center;
}
.mobile-link {
    font-size: 2rem;
    font-weight: 600;
    color: var(--grey-2);
    transition: color 0.2s;
}
.mobile-link:hover { color: var(--blue); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--nav-h) 2rem 4rem;
    text-align: center;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

/* Grid lines */
.hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

/* Ambient Orbs */
.hero__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: orbFloat 8s ease-in-out infinite alternate;
}
.hero__orb--1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.12), transparent 70%);
    top: -10%;
    left: 20%;
    animation-delay: 0s;
}
.hero__orb--2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(29, 78, 216, 0.1), transparent 70%);
    bottom: -5%;
    right: 15%;
    animation-delay: -4s;
}

@keyframes orbFloat {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(30px, -20px) scale(1.05); }
}

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

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border: 1px solid var(--blue-border);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--blue);
    background: rgba(59, 130, 246, 0.05);
    margin-bottom: 1.5rem;
    letter-spacing: 0.03em;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--blue);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.5); }
    50% { opacity: 0.8; box-shadow: 0 0 0 6px transparent; }
}

.hero__name {
    font-size: clamp(3.5rem, 10vw, 7rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--white);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__title {
    font-family: var(--font-mono);
    font-size: clamp(1rem, 3vw, 1.4rem);
    font-weight: 400;
    color: var(--blue);
    margin-bottom: 1.25rem;
    min-height: 2em;
}

.typed-cursor {
    animation: blink 0.7s step-end infinite;
    color: var(--blue);
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero__sub {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: var(--grey-2);
    max-width: 500px;
    margin: 0 auto 2.5rem;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: all 0.25s var(--ease);
    cursor: pointer;
    border: none;
}

.btn--primary {
    background: var(--blue);
    color: var(--white);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}
.btn--primary:hover {
    background: #2563eb;
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
    transform: translateY(-2px);
}
.btn--primary:hover svg {
    transform: translateX(3px);
}
.btn--primary svg {
    transition: transform 0.2s var(--ease);
}

.btn--ghost {
    background: transparent;
    color: var(--grey-1);
    border: 1px solid rgba(255, 255, 255, 0.12);
}
.btn--ghost:hover {
    border-color: rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.04);
    transform: translateY(-2px);
}

/* Scroll Indicator */
.hero__scroll {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--grey-3);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    z-index: 1;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--blue), transparent);
    animation: scrollAnim 1.5s ease-in-out infinite;
}
@keyframes scrollAnim {
    0%   { transform: scaleY(0); transform-origin: top; }
    50%  { transform: scaleY(1); transform-origin: top; }
    51%  { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================================
   SECTIONS
   ============================================================ */
.section {
    padding: 7rem 2rem;
}
.section--alt {
    background: var(--black-1);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.section__header {
    margin-bottom: 4rem;
}
.section__label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--blue);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.75rem;
}
.section__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--white);
}

/* ============================================================
   ABOUT
   ============================================================ */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about__text p {
    font-size: 1.05rem;
    color: var(--grey-2);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.about__meta {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--grey-2);
    font-size: 0.9rem;
}
.meta-item svg { color: var(--blue); flex-shrink: 0; }

.about__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.stat-card {
    background: var(--black-3);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.stat-card:hover {
    border-color: var(--blue-border);
    box-shadow: 0 0 20px var(--blue-glow);
}
.stat-card:last-child {
    grid-column: span 2;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--blue);
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 0.5rem;
}
.stat-label {
    font-size: 0.8rem;
    color: var(--grey-3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================================
   SKILLS
   ============================================================ */
.skills__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.skill-card {
    background: var(--black-3);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    padding: 1.25rem 1.5rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.skill-card:hover {
    border-color: var(--blue-border);
    box-shadow: 0 0 15px var(--blue-glow);
}

.skill-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}
.skill-name {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--grey-1);
    font-weight: 500;
}
.skill-pct {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--blue);
}

.skill-bar {
    height: 4px;
    background: var(--black-5);
    border-radius: 100px;
    overflow: hidden;
}
.skill-bar__fill {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--blue-dim), var(--blue));
    border-radius: 100px;
    transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.5);
}

/* ============================================================
   PROJECTS
   ============================================================ */
.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.25rem;
}

.project-card {
    background: var(--black-3);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 14px;
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
    animation-delay: var(--delay, 0ms);
}
.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top left, var(--blue-glow), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s;
}
.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--blue-border);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5), 0 0 20px var(--blue-glow);
}
.project-card:hover::before {
    opacity: 1;
}

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

.project-card__icon {
    width: 40px;
    height: 40px;
    background: var(--blue-glow);
    border: 1px solid var(--blue-border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blue);
}

.project-card__links {
    display: flex;
    gap: 0.75rem;
}
.project-card__links a {
    color: var(--grey-3);
    transition: color 0.2s;
}
.project-card__links a:hover { color: var(--blue); }

.project-card__title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    letter-spacing: -0.02em;
}

.project-card__desc {
    font-size: 0.875rem;
    color: var(--grey-2);
    line-height: 1.65;
    flex: 1;
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: auto;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--blue);
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.2);
    padding: 0.2rem 0.6rem;
    border-radius: 100px;
    letter-spacing: 0.02em;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact__wrap {
    max-width: 600px;
    text-align: center;
    margin: 0 auto;
}

.contact__text {
    font-size: 1.1rem;
    color: var(--grey-2);
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

.contact__email {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--white);
    border-bottom: 2px solid var(--blue);
    padding-bottom: 0.25rem;
    margin-bottom: 3rem;
    transition: color 0.2s, gap 0.2s;
}
.contact__email:hover {
    color: var(--blue);
    gap: 0.75rem;
}

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

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--grey-2);
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.social-link:hover {
    color: var(--blue);
    border-color: var(--blue-border);
    background: var(--blue-glow);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    padding: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--grey-3);
    font-size: 0.8rem;
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer__links {
    display: flex;
    gap: 1.5rem;
}
.footer__links a {
    color: var(--grey-3);
    transition: color 0.2s;
}
.footer__links a:hover { color: var(--blue); }

/* ============================================================
   REVEAL ANIMATIONS
   ============================================================ */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
    opacity: 1;
    transform: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .nav__links { display: none; }
    .nav__burger { display: flex; }

    .about__grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .about__stats {
        grid-template-columns: repeat(3, 1fr);
    }
    .stat-card:last-child { grid-column: unset; }

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

    .section { padding: 5rem 1.25rem; }
    .hero { padding: var(--nav-h) 1.25rem 3rem; }
}

@media (max-width: 480px) {
    .about__stats {
        grid-template-columns: 1fr 1fr;
    }
    .stat-card:last-child { grid-column: span 2; }
    .projects__grid { grid-template-columns: 1fr; }
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--black); }
::-webkit-scrollbar-thumb {
    background: var(--black-5);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--blue-dim); }

/* ============================================================
   SELECTION
   ============================================================ */
::selection {
    background: rgba(59, 130, 246, 0.3);
    color: var(--white);
}