/* ============================================================
   DATA SPECIALIST PORTFOLIO — PRODUCTION STYLESHEET
   Modern, unique, powerful design – dark theme with cyan/purple/amber accents
   Includes styles for tech stack labels, education status, and AI annotation additions
   ============================================================ */

/* ---------- CSS Variables / Theme ---------- */
:root {
    --bg-deep: #06060e;
    --bg-primary: #0b0b18;
    --bg-secondary: #101024;
    --bg-card: rgba(18, 18, 36, 0.75);
    --bg-card-solid: #161630;
    --bg-card-hover: rgba(22, 22, 48, 0.9);
    --accent-cyan: #00d9f5;
    --accent-cyan-dim: rgba(0, 217, 245, 0.25);
    --accent-cyan-glow: rgba(0, 217, 245, 0.5);
    --accent-purple: #7c5cfc;
    --accent-purple-dim: rgba(124, 92, 252, 0.3);
    --accent-purple-glow: rgba(124, 92, 252, 0.55);
    --accent-amber: #f5a623;
    --accent-amber-dim: rgba(245, 166, 35, 0.25);
    --accent-rose: #f5477c;
    --accent-rose-dim: rgba(245, 71, 124, 0.25);
    --text-primary: #e4e4f2;
    --text-secondary: #b0b0c8;
    --text-muted: #7a7a96;
    --border-subtle: rgba(255, 255, 255, 0.07);
    --border-medium: rgba(255, 255, 255, 0.12);
    --border-glow: rgba(0, 217, 245, 0.35);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font-sans: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    --shadow-card: 0 4px 32px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(255, 255, 255, 0.04) inset;
    --shadow-glow-cyan: 0 0 40px rgba(0, 217, 245, 0.3), 0 0 80px rgba(0, 217, 245, 0.1);
    --shadow-glow-purple: 0 0 40px rgba(124, 92, 252, 0.3), 0 0 80px rgba(124, 92, 252, 0.1);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    --nav-height: 70px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-tap-highlight-color: transparent;
    background-image:
        radial-gradient(ellipse at 15% 10%, rgba(0, 217, 245, 0.04) 0%, transparent 60%),
        radial-gradient(ellipse at 75% 40%, rgba(124, 92, 252, 0.05) 0%, transparent 55%),
        radial-gradient(ellipse at 50% 80%, rgba(245, 71, 124, 0.03) 0%, transparent 50%);
    background-attachment: fixed;
}

/* Subtle grid overlay */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    background: var(--accent-cyan);
    color: #000;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    z-index: 10000;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 12px;
    outline: 3px solid var(--accent-purple);
    outline-offset: 3px;
}

/* ---------- Focus visible global ---------- */
:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ---------- Navigation ---------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 clamp(20px, 5vw, 60px);
    background: rgba(10, 10, 22, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
}

.nav.scrolled {
    background: rgba(8, 8, 18, 0.9);
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.6);
    border-bottom-color: var(--border-medium);
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
    z-index: 1001;
    white-space: nowrap;
}

.nav__logo-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: var(--shadow-glow-cyan);
    animation: logoPulse 2.5s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% {
        box-shadow: 0 0 12px rgba(0, 217, 245, 0.6), 0 0 30px rgba(0, 217, 245, 0.2);
    }

    50% {
        box-shadow: 0 0 24px rgba(0, 217, 245, 0.9), 0 0 50px rgba(0, 217, 245, 0.4);
    }
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}

.nav__link {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    white-space: nowrap;
    letter-spacing: 0.01em;
}

.nav__link:hover,
.nav__link:focus-visible {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
    outline: none;
}

.nav__link:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 2px;
}

.nav__link.active {
    color: var(--accent-cyan);
    background: rgba(0, 217, 245, 0.08);
}

.nav__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
    background: none;
    border: none;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.nav__hamburger:hover {
    background: rgba(255, 255, 255, 0.04);
}

.nav__hamburger:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 2px;
}

.nav__hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-smooth);
    transform-origin: center;
}

.nav__hamburger.open .nav__hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav__hamburger.open .nav__hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.nav__hamburger.open .nav__hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero Section ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-height) + 40px) clamp(20px, 6vw, 80px) 60px;
    overflow: hidden;
    isolation: isolate;
}

.hero__canvas {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    width: 100%;
    height: 100%;
}

.hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 780px;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 24px;
    background: rgba(0, 217, 245, 0.08);
    border: 1px solid rgba(0, 217, 245, 0.2);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-cyan);
    margin-bottom: 24px;
    letter-spacing: 0.02em;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero__badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent-cyan);
    animation: logoPulse 2s ease-in-out infinite;
}

.hero__name {
    font-size: clamp(2.4rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 12px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
    background: linear-gradient(135deg, #fff 0%, #c8d6e5 40%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero__title {
    font-size: clamp(1.05rem, 2.5vw, 1.35rem);
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 8px;
    animation: fadeInUp 0.8s ease-out 0.3s both;
    letter-spacing: 0.01em;
}

.hero__tagline {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease-out 0.35s both;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

.hero__stats {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.45s both;
}

.hero__stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 18px 26px;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    min-width: 120px;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.hero__stat::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(ellipse at center, rgba(0, 217, 245, 0.06) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.hero__stat:hover::after {
    opacity: 1;
}

.hero__stat:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow-cyan);
}

.hero__stat-value {
    font-size: 2rem;
    font-weight: 800;
    font-family: var(--font-mono);
    letter-spacing: -0.02em;
    color: var(--accent-cyan);
    position: relative;
    z-index: 1;
}

.hero__stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.hero__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
    padding: 14px 32px;
    border-radius: 28px;
    background: var(--accent-cyan);
    color: #000;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: all var(--transition-bounce);
    animation: fadeInUp 0.8s ease-out 0.55s both;
    cursor: pointer;
    border: none;
}

.hero__cta:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow-cyan);
}

.hero__cta:focus-visible {
    outline: 3px solid var(--accent-purple);
    outline-offset: 4px;
}

.hero__scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounceDown 2s ease-in-out infinite;
    opacity: 0.7;
}

@keyframes bounceDown {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(12px);
    }
}

.hero__scroll-indicator span {
    display: block;
    width: 28px;
    height: 28px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    border-radius: 2px;
}

/* ---------- Shared Section Styles ---------- */
.section {
    position: relative;
    z-index: 1;
    padding: 80px clamp(20px, 5vw, 60px);
}

.section__header {
    text-align: center;
    margin-bottom: 60px;
}

.section__label {
    display: inline-block;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
    font-weight: 600;
    margin-bottom: 8px;
}

.section__title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.section__subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.5;
}

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

/* ---------- About Section ---------- */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.about__text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

.about__text strong {
    color: var(--text-primary);
}

.about__highlight-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.about__highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    transition: all var(--transition-smooth);
}

.about__highlight-item:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-card);
}

.about__highlight-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.about__highlight-icon--cyan {
    background: rgba(0, 217, 245, 0.12);
    color: var(--accent-cyan);
}

.about__highlight-icon--purple {
    background: rgba(124, 92, 252, 0.12);
    color: var(--accent-purple);
}

.about__highlight-icon--amber {
    background: rgba(245, 166, 35, 0.12);
    color: var(--accent-amber);
}

.about__highlight-content strong {
    display: block;
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.about__highlight-content span {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* ---------- Tech Stack Showcase ---------- */
.techstack__grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
    justify-items: center;
    align-items: center;
}

.svg__wrapper-main-container {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px 16px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-smooth);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    width: 100%;
    aspect-ratio: 1 / 1;
    cursor: default;
}

.svg__wrapper-main-container:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow-cyan);
    transform: translateY(-6px);
}

.svg__img-wrapper {
    max-width: 55%;
    max-height: 55%;
    object-fit: contain;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.3));
    transition: transform var(--transition-bounce);
}

.svg__wrapper-main-container:hover .svg__img-wrapper {
    transform: scale(1.1);
}

.techstack__name {
    margin-top: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    letter-spacing: 0.03em;
    transition: color var(--transition-fast);
}

.svg__wrapper-main-container:hover .techstack__name {
    color: var(--accent-cyan);
}

/* ---------- Skills Section ---------- */
.skills__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.skills__category {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px 24px 24px;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.skills__category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.skills__category--data::before {
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
}

.skills__category--ops::before {
    background: linear-gradient(90deg, var(--accent-amber), #f7c948);
}

.skills__category--soft::before {
    background: linear-gradient(90deg, var(--accent-rose), var(--accent-purple));
}

.skills__category:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

.skills__category-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 16px;
}

.skills__category-icon--data {
    background: rgba(0, 217, 245, 0.1);
}

.skills__category-icon--ops {
    background: rgba(245, 166, 35, 0.1);
}

.skills__category-icon--soft {
    background: rgba(245, 71, 124, 0.1);
}

.skills__category h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.skills__category-subtitle {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.skills__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skills__tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: all var(--transition-fast);
    cursor: default;
    border: 1px solid transparent;
    white-space: nowrap;
}

.skills__tag--data {
    background: rgba(0, 217, 245, 0.07);
    color: #7ae8f8;
    border-color: rgba(0, 217, 245, 0.18);
}

.skills__tag--data:hover {
    background: rgba(0, 217, 245, 0.15);
    border-color: rgba(0, 217, 245, 0.4);
    box-shadow: 0 0 16px rgba(0, 217, 245, 0.2);
}

.skills__tag--ops {
    background: rgba(245, 166, 35, 0.07);
    color: #f9c762;
    border-color: rgba(245, 166, 35, 0.18);
}

.skills__tag--ops:hover {
    background: rgba(245, 166, 35, 0.15);
    border-color: rgba(245, 166, 35, 0.4);
    box-shadow: 0 0 16px rgba(245, 166, 35, 0.2);
}

.skills__tag--soft {
    background: rgba(245, 71, 124, 0.07);
    color: #f782a6;
    border-color: rgba(245, 71, 124, 0.18);
}

.skills__tag--soft:hover {
    background: rgba(245, 71, 124, 0.15);
    border-color: rgba(245, 71, 124, 0.4);
    box-shadow: 0 0 16px rgba(245, 71, 124, 0.2);
}

.skills__proficiency-bar {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.skills__proficiency-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.skills__proficiency-item span:first-child {
    width: 80px;
    flex-shrink: 0;
    text-align: right;
    font-weight: 500;
}

.skills__bar-track {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 3px;
    overflow: hidden;
}

.skills__bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    width: 0;
}

.skills__bar-fill--cyan {
    background: var(--accent-cyan);
    box-shadow: 0 0 8px rgba(0, 217, 245, 0.4);
}

.skills__bar-fill--purple {
    background: var(--accent-purple);
    box-shadow: 0 0 8px rgba(124, 92, 252, 0.4);
}

.skills__bar-fill--amber {
    background: var(--accent-amber);
    box-shadow: 0 0 8px rgba(245, 166, 35, 0.4);
}

.skills__bar-fill--rose {
    background: var(--accent-rose);
    box-shadow: 0 0 8px rgba(245, 71, 124, 0.4);
}

/* ---------- Services Section ---------- */
.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.service-card:hover::before {
    opacity: 1;
}

.service-card:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-card);
    transform: translateY(-6px);
}

.service-card__icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
    color: var(--accent-cyan);
    display: inline-block;
    transition: color var(--transition-fast);
}

.service-card:hover .service-card__icon {
    color: var(--accent-purple);
}

.service-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.service-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ---------- Experience Section ---------- */
.experience__timeline {
    position: relative;
    padding-left: 40px;
}

.experience__timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-cyan) 0%, var(--accent-purple) 50%, var(--border-subtle) 100%);
    border-radius: 1px;
}

.experience__item {
    position: relative;
    margin-bottom: 40px;
    padding: 24px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all var(--transition-smooth);
}

.experience__item::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 28px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-cyan);
    border: 3px solid var(--bg-deep);
    box-shadow: 0 0 12px rgba(0, 217, 245, 0.5);
    z-index: 1;
}

.experience__item:nth-child(odd)::before {
    background: var(--accent-cyan);
}

.experience__item:nth-child(even)::before {
    background: var(--accent-purple);
    box-shadow: 0 0 12px rgba(124, 92, 252, 0.5);
}

.experience__item:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-card);
    transform: translateX(4px);
}

.experience__item-header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 6px;
}

.experience__item-role {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.experience__item-type {
    font-size: 0.78rem;
    padding: 3px 10px;
    border-radius: 12px;
    background: rgba(0, 217, 245, 0.1);
    color: var(--accent-cyan);
    font-weight: 500;
    letter-spacing: 0.02em;
}

.experience__item-duration {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.experience__item-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.experience__item-list li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding-left: 18px;
    position: relative;
    line-height: 1.5;
}

.experience__item-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-cyan);
    font-size: 0.7rem;
    top: 3px;
}

/* ---------- Projects Section ---------- */
.projects__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 26px 22px;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.project-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(circle at top right, rgba(0, 217, 245, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

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

.project-card__icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.project-card__icon--cyan {
    background: rgba(0, 217, 245, 0.1);
}

.project-card__icon--purple {
    background: rgba(124, 92, 252, 0.1);
}

.project-card__icon--amber {
    background: rgba(245, 166, 35, 0.1);
}

.project-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
    position: relative;
    z-index: 1;
    letter-spacing: -0.01em;
}

.project-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    position: relative;
    z-index: 1;
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: auto;
    padding-top: 16px;
    position: relative;
    z-index: 1;
}

.project-card__tag {
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

/* ---------- Certifications ---------- */
.certs__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.cert-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 22px 20px;
    text-align: center;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.cert-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-card);
    transform: translateY(-3px);
}

.cert-card__icon {
    font-size: 2rem;
    margin-bottom: 10px;
    display: block;
    color: var(--accent-cyan);
}

.cert-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
    letter-spacing: -0.01em;
}

.cert-card p {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.cert-card__stripe {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.cert-card__stripe--cyan {
    background: var(--accent-cyan);
}

.cert-card__stripe--purple {
    background: var(--accent-purple);
}

.cert-card__stripe--amber {
    background: var(--accent-amber);
}

/* ---------- Education ---------- */
.education__card {
    max-width: 500px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px 30px 24px;
    text-align: center;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.education__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
}

.education__card:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-card);
}

.education__card h3.degree {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    margin-bottom: 6px;
}

.education__card .school {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.education__status {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    background: rgba(0, 217, 245, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 217, 245, 0.25);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

/* ---------- Contact Section ---------- */
.contact__wrapper {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: start;
}

.contact__form {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: box-shadow var(--transition-smooth);
}

.contact__form:hover {
    box-shadow: var(--shadow-card);
}

.form__group {
    margin-bottom: 20px;
}

.form__label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}

.form__input,
.form__textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form__input:focus,
.form__textarea:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 217, 245, 0.15);
}

.form__textarea {
    resize: vertical;
    min-height: 120px;
}

.form__submit {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--accent-cyan);
    color: #000;
    font-weight: 700;
    font-size: 1rem;
    border: none;
    border-radius: 28px;
    cursor: pointer;
    transition: all var(--transition-bounce);
    letter-spacing: 0.02em;
}

.form__submit:hover {
    background: var(--accent-purple);
    color: #fff;
    transform: scale(1.03);
    box-shadow: var(--shadow-glow-purple);
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.contact__info-item {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.contact__info-item i {
    font-size: 1.6rem;
    color: var(--accent-cyan);
    transition: color var(--transition-fast);
}

.contact__info-item:hover i {
    color: var(--accent-purple);
}

/* ---------- Footer ---------- */
.footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 40px 20px;
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-primary);
}

.footer__text {
    font-size: 0.82rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

.footer__text span {
    color: var(--accent-cyan);
}

/* ---------- Responsive Design ---------- */
@media (max-width: 1024px) {
    .techstack__grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .certs__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 968px) {
    .skills__grid, .services__grid, .projects__grid {
        grid-template-columns: 1fr 1fr;
    }

    .about__grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

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

    .experience__timeline {
        padding-left: 32px;
    }

    .experience__item::before {
        left: -25px;
        width: 10px;
        height: 10px;
    }

    .experience__timeline::before {
        left: 11px;
    }
}

@media (max-width: 768px) {
    .techstack__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 640px) {
    .nav__links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        flex-direction: column;
        background: rgba(12, 12, 26, 0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: 90px 28px 40px;
        gap: 4px;
        transition: right var(--transition-smooth);
        border-left: 1px solid var(--border-subtle);
        z-index: 1000;
    }

    .nav__links.open {
        right: 0;
    }

    .nav__hamburger {
        display: flex;
    }

    .nav__link {
        width: 100%;
        padding: 12px 16px;
        border-radius: var(--radius-sm);
        font-size: 1rem;
    }

    .skills__grid, .services__grid, .projects__grid, .techstack__grid {
        grid-template-columns: 1fr;
    }

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

    .hero__stats {
        gap: 14px;
    }

    .hero__stat {
        padding: 14px 18px;
        min-width: 100px;
    }

    .hero__stat-value {
        font-size: 1.5rem;
    }

    .section {
        padding: 50px 16px;
    }

    .experience__item {
        padding: 18px 16px;
    }

    .experience__item-role {
        font-size: 1rem;
    }
}

@media (max-width: 400px) {
    .hero__stats {
        flex-direction: column;
        align-items: center;
    }

    .hero__stat {
        width: 100%;
        max-width: 200px;
    }

    .nav {
        padding: 0 14px;
    }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ── Resume Download Button ────────────────────── */
.resume-download {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--accent-purple), #5b3cc4);
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    border-radius: 2rem;
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 15px rgba(124, 92, 252, 0.3);
    letter-spacing: 0.01em;
    cursor: pointer;
    overflow: hidden;
}

/* Animated gradient border on hover */
.resume-download::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: inherit;
    background: linear-gradient(45deg, var(--accent-cyan), var(--accent-purple), var(--accent-amber));
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
    background-size: 300% 300%;
    animation: none;
}

.resume-download:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 8px 25px rgba(124, 92, 252, 0.5);
    color: #fff;
    border-color: transparent;
}

.resume-download:hover::before {
    opacity: 1;
    animation: borderRotate 2s linear infinite;
}

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

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

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

/* Icon spacing */
.resume-download i {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.resume-download:hover i {
    transform: translateY(-2px);
}

/* Focus state */
.resume-download:focus-visible {
    outline: 3px solid var(--accent-amber);
    outline-offset: 3px;
    box-shadow: 0 0 0 6px rgba(245, 166, 35, 0.2);
}

/* Active/Click state */
.resume-download:active {
    transform: translateY(1px) scale(0.98);
    box-shadow: 0 2px 10px rgba(124, 92, 252, 0.4);
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .resume-download {
        padding: 12px 24px;
        font-size: 0.95rem;
    }
}