:root {
    --bg: #0b0f14;
    --surface: #111826;
    --card: #131c2b;
    --text: #e6edf3;
    --muted: #9fb0c2;
    --brand: #4f46e5;
    /* indigo-600 */
    --brand-2: #14b8a6;
    /* teal-500 */
    --ring: rgba(79, 70, 229, .35);
    --shadow: 0 10px 25px rgba(0, 0, 0, .35);
    --radius: 16px;
    --gap: 1rem;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #f7fafc;
        --surface: #ffffff;
        --card: #ffffff;
        --text: #0f172a;
        --muted: #475569;
        --ring: rgba(79, 70, 229, .25);
        --shadow: 0 8px 24px rgba(2, 6, 23, .08);
    }
}

* {
    box-sizing: border-box
}

html,
body {
    height: 100%
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, sans-serif;
    background: radial-gradient(1200px 600px at 80% -10%, rgba(79, 70, 229, .2), transparent 60%),
        radial-gradient(900px 500px at -10% 20%, rgba(20, 184, 166, .18), transparent 60%),
        var(--bg);
    color: var(--text);
    line-height: 1.6;
}

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

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

/* Layout */
.container {
    width: min(1120px, 92vw);
    margin-inline: auto
}

header.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: saturate(140%) blur(10px);
    background: linear-gradient(180deg, rgba(0, 0, 0, .35), rgba(0, 0, 0, 0));
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0
}

.brand {
    display: flex;
    align-items: center;
    gap: .6rem;
    font-weight: 800;
    letter-spacing: .3px
}

.brand .logo {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    box-shadow: var(--shadow)
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.2rem
}

.nav-links a {
    opacity: .9;
    font-weight: 600
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-weight: 700;
    padding: .7rem 1rem;
    border-radius: 999px;
    box-shadow: var(--shadow);
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    color: white;
    border: 0
}

.btn.secondary {
    background: transparent;
    border: 1px solid rgba(148, 163, 184, .25);
    box-shadow: none;
    color: var(--text)
}

/* Mobile nav */
.hamburger {
    display: none;
    cursor: pointer;
    border: 1px solid rgba(148, 163, 184, .3);
    border-radius: 10px;
    padding: .5rem
}

@media (max-width: 760px) {
    .nav-links {
        display: none
    }

    .hamburger {
        display: block
    }

    .mobile-menu {
        display: none;
        position: absolute;
        left: 0;
        right: 0;
        top: 60px;
        background: var(--surface);
        border: 1px solid rgba(148, 163, 184, .15);
        border-radius: 12px;
        margin: .5rem;
        padding: .5rem
    }

    .mobile-menu a {
        display: block;
        padding: .9rem 1rem;
        border-radius: 8px
    }

    .mobile-menu a:hover {
        background: rgba(148, 163, 184, .08)
    }
}

/* Hero */
.hero {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: 2.5rem;
    align-items: center;
    padding: 72px 0 28px
}

.hero h1 {
    font-size: clamp(1.9rem, 1.2rem + 3vw, 3.4rem);
    line-height: 1.1;
    margin: .2rem 0 1rem
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    /* padding: .35rem .7rem; */
    /* border: 1px solid rgba(148, 163, 184, .25);
    border-radius: 999px; */
    font-size: 1.5rem;
    color: var(--muted)
}

.hero .sub {
    font-size: 1.1rem;
    color: var(--muted)
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin: 1rem 0
}

.chip {
    font-size: .85rem;
    padding: .4rem .6rem;
    border-radius: 999px;
    background: rgba(148, 163, 184, .12);
    border: 1px solid rgba(148, 163, 184, .18);
    color: var(--muted)
}

.hero-visual {
    position: relative
}

.card-hero {
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02));
    border: 0px solid rgba(148, 163, 184, .15);
    box-shadow: var(--shadow); 
    overflow: hidden 
}

/* Section */
section {
    padding: 54px 0
}

.section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 20px
}

.section-head h2 {
    font-size: clamp(1.3rem, 1rem + 1.3vw, 2rem);
    margin: 0
}

.section-head p {
    color: var(--muted);
    margin: 0
}

/* Projects */
.grid {
    display: grid;
    gap: 1.25rem
}

.grid.cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr))
}

@media (max-width: 980px) {
    .hero {
        grid-template-columns: 1fr
    }

    .grid.cols-3 {
        grid-template-columns: 1fr 1fr
    }
}

@media (max-width: 620px) {
    .grid.cols-3 {
        grid-template-columns: 1fr
    }
}

.card {
    background: var(--card);
    border: 1px solid rgba(148, 163, 184, .12);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(79, 70, 229, .45)
}

.card .media {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, rgba(79, 70, 229, .25), rgba(20, 184, 166, .25));
    display: flex;
    align-items: center;
    justify-content: center
}

.card .media span {
    opacity: .8
}

.card .body {
    padding: 1rem
}

.card .kicker {
    font-size: .8rem;
    color: var(--muted);
    letter-spacing: .08em;
    text-transform: uppercase
}

.card h3 {
    margin: .3rem 0 .4rem
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    margin: .7rem 0
}

.tag-sm {
    font-size: .75rem;
    padding: .25rem .5rem;
    border-radius: 999px;
    background: rgba(148, 163, 184, .12);
    border: 1px solid rgba(148, 163, 184, .18);
    color: var(--muted)
}

.card .actions {
    display: flex;
    gap: .6rem;
    margin-top: .8rem
}

.btn.link {
    background: transparent;
    border: 1px solid rgba(148, 163, 184, .25);
    color: var(--text);
    padding: .55rem .85rem
}

/* Skills */
.skills {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 1.25rem
}

@media (max-width: 980px) {
    .skills {
        grid-template-columns: 1fr
    }
}

.skill-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .8rem
}

.pill {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .6rem;
    padding: .7rem .8rem;
    border-radius: 12px;
    background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02));
    border: 1px solid rgba(148, 163, 184, .16)
}

.meter {
    height: 8px;
    border-radius: 999px;
    background: rgba(148, 163, 184, .18);
    overflow: hidden;
    flex: 1;
    margin-left: .7rem
}

.meter>i {
    display: block;
    height: 100%;
    width: 66%;
    background: linear-gradient(90deg, var(--brand), var(--brand-2))
}

.exp-card {
    padding: 1rem;
    border-radius: var(--radius);
    border: 1px solid rgba(148, 163, 184, .16);
    background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02))
}

/* Contact */
form {
    display: grid;
    gap: .8rem
}

label {
    font-size: .9rem;
    color: var(--muted)
}

input,
textarea {
    width: 100%;
    padding: .9rem 1rem;
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, .22);
    background: rgba(255, 255, 255, .03);
    color: var(--text);
    outline: none
}

input:focus,
textarea:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 6px var(--ring)
}

textarea {
    min-height: 140px;
    resize: vertical
}

.form-row {
    display: grid;
    gap: .8rem;
    grid-template-columns: 1fr 1fr
}

@media (max-width:620px) {
    .form-row {
        grid-template-columns: 1fr
    }
}

/* Footer */
footer {
    padding: 28px 0 60px;
    color: var(--muted)
}

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

.row {
    display: flex;
    gap: .7rem;
    flex-wrap: wrap;
    align-items: center
}

.spacer {
    height: 10px
}

.muted {
    color: var(--muted)
}