:root {
    --primary-teal: #0f766e;
    --primary-teal-dark: #0d5a55;
    --primary-indigo: #4338ca;
    --accent-ice: #60a5fa;
    --accent-coral: #f97316;
    --accent-lilac: #a855f7;
    --accent-lime: #22c55e;
    --accent-slate: #64748b;
    --bg-off-white: #f6f7fb;
    --bg-white: #ffffff;
    --white: #ffffff;
    --text-charcoal: #0f172a;
    --text-muted: #475569;
    --highlight-warm: #2563eb;
    --border-soft: rgba(15, 23, 42, 0.08);
    --shadow-soft: 0 14px 30px rgba(15, 23, 42, 0.08);
    --shadow-tight: 0 10px 24px rgba(15, 23, 42, 0.12);
    --icon-contrast: var(--primary-indigo);
    --font-main: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --max-width: 1200px;
    --nav-height: 74px;
}

body[data-theme="dark"] {
    --primary-teal: #5eead4;
    --primary-teal-dark: #2dd4bf;
    --primary-indigo: #93c5fd;
    --accent-ice: #38bdf8;
    --accent-coral: #fb923c;
    --accent-lilac: #c4b5fd;
    --accent-lime: #4ade80;
    --bg-off-white: #0b1220;
    --bg-white: #0f172a;
    --white: #0b1220;
    --text-charcoal: #e2e8f0;
    --text-muted: #94a3b8;
    --accent-slate: #cbd5f5;
    --highlight-warm: #38bdf8;
    --border-soft: rgba(148, 163, 184, 0.2);
    --shadow-soft: 0 18px 40px rgba(5, 7, 15, 0.4);
    --shadow-tight: 0 10px 30px rgba(5, 7, 15, 0.6);
    --icon-contrast: #f8fafc;
}

body[data-theme="dark"] .sticky-nav {
    background: linear-gradient(120deg, rgba(15, 23, 42, 0.92), rgba(30, 64, 175, 0.45), rgba(13, 148, 136, 0.45));
}

body[data-theme="dark"] .hero-badge {
    background-color: rgba(94, 234, 212, 0.18);
    color: var(--primary-teal);
}

html {
    scroll-behavior: smooth;
    box-sizing: border-box;
}

*, *:before, *:after {
    box-sizing: inherit;
}

body {
    margin: 0;
    font-family: var(--font-main);
    color: var(--text-charcoal);
    background-color: var(--bg-white);
    line-height: 1.6;
    font-size: 1.0625rem;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography */
h1, h2, h3 {
    margin-top: 0;
    line-height: 1.2;
    color: var(--text-charcoal);
    text-align: center;
    transition: color 0.3s ease;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--primary-teal);
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
    font-size: 1.05rem;
    transition: color 0.3s ease;
}

.subheading {
    font-size: 1.25rem;
    color: var(--accent-slate);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}


/* Layout */
.container {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1rem;
}

.section {
    padding: 5rem 0;
}

.hero-section {
    padding: 8rem 0 6rem;
    text-align: center;
    background: radial-gradient(circle at top, rgba(67, 56, 202, 0.2), transparent 55%),
        radial-gradient(circle at 20% 20%, rgba(14, 116, 144, 0.18), transparent 45%),
        radial-gradient(circle at 80% 10%, rgba(249, 115, 22, 0.16), transparent 40%),
        linear-gradient(135deg, rgba(15, 118, 110, 0.16), rgba(96, 165, 250, 0.12)),
        var(--bg-off-white);
}

.alt-bg {
    background-color: var(--bg-off-white);
    transition: background-color 0.3s ease;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

/* Navigation */
.sticky-nav {
    position: sticky;
    top: 0;
    background: linear-gradient(120deg, rgba(255, 255, 255, 0.96), rgba(226, 232, 240, 0.9), rgba(191, 219, 254, 0.85));
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    z-index: 1000;
    height: var(--nav-height);
    border-bottom: 1px solid var(--border-soft);
}

.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    height: 100%;
    flex-wrap: nowrap;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-charcoal);
    letter-spacing: 0.02em;
    font-size: 1.1rem;
    white-space: nowrap;
}

.brand-logo {
    width: 36px;
    height: 36px;
    border-radius: 999px;
    object-fit: cover;
    box-shadow: 0 8px 18px rgba(15, 118, 110, 0.25);
}

.nav-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 2rem;
    position: relative;
    --indicator-left: 0px;
    --indicator-width: 0px;
    --indicator-opacity: 0;
}

.nav-links::before {
    content: "";
    position: absolute;
    top: 50%;
    left: var(--indicator-left);
    width: var(--indicator-width);
    height: 40px;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(67, 56, 202, 0.18), rgba(15, 118, 110, 0.2), rgba(96, 165, 250, 0.18));
    transform: translateY(-50%);
    transition: left 0.3s ease, width 0.3s ease, opacity 0.2s ease;
    opacity: var(--indicator-opacity);
    z-index: 0;
}

.nav-links.indicator-appear::before {
    transition: opacity 0.3s ease;
}

.nav-links li {
    position: relative;
    z-index: 1;
}

.nav-links a {
    display: inline-flex;
    align-items: center;
    padding: 0.6rem 1.1rem;
    text-decoration: none;
    color: var(--text-charcoal);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
    white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-teal);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

/* Unused nav-toggle styles removed to keep stylesheet lean. */


/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-indigo), var(--primary-teal), var(--accent-lilac));
    color: var(--white);
    border: none;
    box-shadow: var(--shadow-tight);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-ice), var(--highlight-warm), var(--accent-coral));
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.35);
}

.btn-rounded {
    border-radius: 999px;
    overflow: hidden;
}

.btn-hire {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    white-space: nowrap;
    flex-shrink: 0;
    overflow: hidden;
    transform-origin: center;
    will-change: transform;
    animation: hire-pulse 2.6s ease-in-out infinite;
}

.btn-hire .btn-text-short {
    display: none;
}

.btn-hire::before {
    content: "";
    position: absolute;
    inset: -10%;
    background:
        radial-gradient(circle at 16% 28%, rgba(255, 255, 255, 0.95), transparent 32%),
        radial-gradient(circle at 34% 62%, rgba(255, 255, 255, 0.65), transparent 40%),
        radial-gradient(circle at 72% 22%, rgba(255, 255, 255, 0.85), transparent 36%),
        radial-gradient(circle at 84% 68%, rgba(255, 255, 255, 0.7), transparent 38%),
        radial-gradient(circle at 52% 42%, rgba(255, 255, 255, 0.55), transparent 45%);
    opacity: 0;
    transform: scale(0.85);
    animation: hire-sparkle 2.6s ease-in-out infinite;
    pointer-events: none;
}

.btn-hire::after {
    content: "";
    position: absolute;
    top: -120%;
    left: -40%;
    width: 60%;
    height: 320%;
    background: linear-gradient(120deg, transparent 15%, rgba(255, 255, 255, 0.55) 45%, rgba(255, 255, 255, 0.1) 60%, transparent 75%);
    opacity: 0;
    transform: translateX(-120%) rotate(18deg);
    animation: hire-shimmer 2.6s ease-in-out infinite;
    pointer-events: none;
}

@keyframes hire-shimmer {
    0%,
    35% {
        opacity: 0;
        transform: translateX(-140%) rotate(18deg);
    }
    42% {
        opacity: 0.7;
    }
    52% {
        opacity: 1;
        transform: translateX(240%) rotate(18deg);
    }
    100% {
        opacity: 0;
        transform: translateX(240%) rotate(18deg);
    }
}

@keyframes hire-sparkle {
    0%,
    30% {
        opacity: 0;
        transform: scale(0.85);
    }
    40% {
        opacity: 0.5;
        transform: scale(1.02);
    }
    55% {
        opacity: 0.9;
        transform: scale(1.08);
    }
    70% {
        opacity: 0.4;
        transform: scale(1.03);
    }
    100% {
        opacity: 0;
        transform: scale(0.95);
    }
}

@keyframes hire-pulse {
    0%,
    30%,
    100% {
        transform: scale(1);
    }
    42% {
        transform: scale(1.04);
    }
    58% {
        transform: scale(1.02);
    }
}

@keyframes theme-spin {
    0% {
        transform: rotate(0deg) scale(1);
    }
    60% {
        transform: rotate(300deg) scale(1.08);
    }
    100% {
        transform: rotate(360deg) scale(1);
    }
}

.btn-ghost {
    border: 2px solid var(--border-soft);
    color: var(--text-charcoal);
    background-color: transparent;
}

.btn-ghost:hover {
    border-color: var(--primary-teal);
    color: var(--primary-teal);
    transform: translateY(-2px);
}

.btn-small {
    padding: 0.5rem 1.5rem;
    font-size: 0.9rem;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--border-soft);
    background-color: transparent;
    color: var(--text-charcoal);
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.2s ease, color 0.2s ease, background-color 0.3s ease;
}

.theme-toggle:hover {
    border-color: var(--primary-teal);
    color: var(--primary-teal);
}

.floating-toggle {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    justify-content: center;
    gap: 0;
    box-shadow: var(--shadow-tight);
    background-color: var(--bg-white);
    z-index: 999;
}

.floating-toggle .theme-icon {
    font-size: 1.2rem;
}

.theme-icon.is-spinning {
    animation: theme-spin 0.6s ease-in-out;
}

/* Cards & Content */
.card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 14px;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-soft);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background-color 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 18px 30px rgba(15, 23, 42, 0.15);
    border-color: rgba(67, 56, 202, 0.2);
}

.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    height: 4px;
    width: 100%;
    background: linear-gradient(90deg, var(--primary-indigo), var(--primary-teal), var(--accent-ice), var(--accent-coral));
}

.card::after,
.work-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top, rgba(96, 165, 250, 0.2), transparent 55%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.card:hover::after,
.work-card:hover::after {
    opacity: 1;
}

.skills-marquee {
    position: relative;
    overflow: hidden;
    padding: 2.25rem 0;
    margin-top: 2.5rem;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(67, 56, 202, 0.08), rgba(15, 118, 110, 0.12));
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-soft);
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 10%, #000 90%, transparent 100%);
    mask-image: linear-gradient(90deg, transparent 0%, #000 10%, #000 90%, transparent 100%);
}

.skills-row + .skills-row {
    margin-top: 2.25rem;
}

.skills-track {
    display: flex;
    gap: 2rem;
    width: max-content;
    animation: skills-scroll 170s linear infinite;
    will-change: transform;
    backface-visibility: hidden;
}

.skills-track--slow {
    animation-duration: 190s;
}

.skills-track--slower {
    animation-duration: 220s;
}

.skills-track--slowest {
    animation-duration: 250s;
}

.skills-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: nowrap;
    gap: 1.5rem;
    margin: 0;
    align-items: center;
}

.skills-list li {
    background: linear-gradient(135deg, rgba(67, 56, 202, 0.18), rgba(15, 118, 110, 0.24), rgba(34, 197, 94, 0.2));
    color: var(--primary-teal-dark);
    padding: 0.85rem 1.6rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 0.01em;
    white-space: nowrap;
    flex-shrink: 0;
    transition: color 0.3s ease;
}

@keyframes skills-scroll {
    0% {
        transform: translateX(-50%);
    }
    100% {
        transform: translateX(0);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border-radius: 999px;
    background: linear-gradient(120deg, rgba(67, 56, 202, 0.22), rgba(15, 118, 110, 0.2), rgba(249, 115, 22, 0.18));
    color: var(--primary-teal-dark);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.hero-actions .btn {
    min-width: 190px;
    text-align: center;
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    justify-content: center;
    justify-items: center;
    gap: 1.5rem;
    margin-top: 3rem;
}

.hero-metrics .metric-card {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 1.75rem 1.5rem;
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-soft);
    text-align: center;
    width: 100%;
    transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.hero-metrics .metric-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 30px rgba(15, 23, 42, 0.15);
    border-color: rgba(67, 56, 202, 0.2);
}

.metric-icon {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--icon-contrast);
    margin: 0 auto 0.85rem;
}

.metric-icon svg {
    width: 22px;
    height: 22px;
    display: block;
}

.hero-metrics h3 {
    margin-bottom: 0.25rem;
    font-size: 1.65rem;
    color: var(--primary-indigo);
}

.hero-metrics p {
    margin-bottom: 0;
    color: var(--accent-slate);
}

.work-card {
    background: var(--bg-white);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
    border: 1px solid var(--border-soft);
    position: relative;
}

.work-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 36px rgba(15, 23, 42, 0.18);
}

.placeholder-img {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, rgba(67, 56, 202, 0.22), rgba(15, 118, 110, 0.2), rgba(96, 165, 250, 0.2), rgba(249, 115, 22, 0.18));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-slate);
    font-weight: 500;
}

.work-details {
    padding: 1.5rem;
}

.work-details h3 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

/* Footer */
footer {
    background-color: var(--bg-off-white);
    color: var(--text-charcoal);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-soft);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

footer p {
    color: var(--text-muted);
    margin: 0;
    font-size: 0.9rem;
}

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

.scroll-fade {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-fade.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-slide {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-slide.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.scroll-slide.is-exiting {
    opacity: 0;
    transform: translateX(60px);
}

@media (prefers-reduced-motion: reduce) {
    .scroll-fade,
    .scroll-fade.is-visible {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .scroll-slide,
    .scroll-slide.is-visible,
    .scroll-slide.is-exiting {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .btn-hire::after {
        animation: none;
    }

    .btn-hire::before {
        animation: none;
    }

    .btn-hire {
        animation: none;
    }

    .skills-track {
        animation: none;
        transform: translateX(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.25rem;
    }

    .sticky-nav {
        height: auto;
        padding: 0.75rem 0;
    }

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

    .nav-links {
        display: none;
    }

    .btn-hire .btn-text-short {
        display: none;
    }

    .btn-hire .btn-text-full {
        display: inline;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 260px;
    }
}

@media (max-width: 1100px) {
    .nav-links {
        display: none;
    }

    .grid-3 {
        grid-template-columns: repeat(2, minmax(260px, 1fr));
        justify-content: center;
    }

    .grid-3 > :nth-last-child(1):nth-child(odd) {
        grid-column: 1 / -1;
        justify-self: center;
        max-width: 560px;
        width: 100%;
    }

    .hero-metrics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 1240px) {
    .nav-links {
        gap: 1rem;
    }

    .nav-links a {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }

    .nav-actions .btn-hire .btn-text-full {
        display: none;
    }

    .nav-actions .btn-hire .btn-text-short {
        display: inline;
    }

    .nav-actions .btn-small {
        padding: 0.45rem 1.2rem;
    }
}

@media (max-width: 1180px) {
    .nav-bar {
        flex-wrap: nowrap;
        justify-content: space-between;
        row-gap: 0.75rem;
    }

    .nav-links {
        width: 100%;
    }

    .nav-actions {
        order: 0;
    }

    .nav-links {
        order: 0;
    }
}

@media (max-width: 720px) {
    .grid-3 {
        grid-template-columns: minmax(0, 1fr);
    }

    .hero-metrics {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 560px) {
    .brand {
        font-size: 0.98rem;
        min-width: 0;
    }

    .brand span {
        max-width: 180px;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .brand-logo {
        width: 32px;
        height: 32px;
    }

    .btn-small {
        padding: 0.45rem 1.15rem;
        font-size: 0.85rem;
    }
}