/* ========================================
   NASIF SAFWAN — PORTFOLIO
   Monogram-Inspired Dark Theme
   ======================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #161616;
    --bg-card-hover: #1a1a1a;
    --bg-card-border: #222222;

    --accent: #00FF66;
    --accent-dim: #00cc52;
    --accent-glow: rgba(0, 255, 102, 0.15);
    --accent-glow-strong: rgba(0, 255, 102, 0.3);

    --text-primary: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-tertiary: #666666;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-cyberpunk: 'Press Start 2P', monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;
    --font-size-hero: clamp(2rem, 8vw, 4.5rem);

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;

    /* Layout */
    --container-max: 1200px;
    --nav-height: 72px;

    /* Effects */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(0, 255, 102, 0.1);
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ---------- Noise Overlay ---------- */
.noise-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none;
    opacity: 0.035;
    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");
    background-repeat: repeat;
    background-size: 256px;
}

/* ---------- Utility ---------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.accent {
    color: var(--accent);
}

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

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

/* ---------- Reveal Animation ---------- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 28px;
    border-radius: 50px;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    white-space: nowrap;
}

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

.btn--primary:hover {
    background: var(--accent-dim);
    box-shadow: var(--shadow-glow), 0 0 60px rgba(0, 255, 102, 0.2);
    transform: translateY(-2px);
}

.btn--outline {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--bg-card-border);
}

.btn--outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.btn--large {
    padding: 18px 36px;
    font-size: var(--font-size-base);
}

/* ---------- Navigation ---------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(10, 10, 10, 0.8);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-base), background var(--transition-base);
}

.nav.scrolled {
    border-bottom-color: var(--bg-card-border);
    background: rgba(10, 10, 10, 0.95);
}

.nav__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    font-size: var(--font-size-lg);
    font-weight: 800;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.nav__logo:hover {
    color: var(--accent);
}

.nav__logo-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow-strong);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {

    0%,
    100% {
        box-shadow: 0 0 12px var(--accent-glow-strong);
    }

    50% {
        box-shadow: 0 0 20px var(--accent-glow-strong), 0 0 40px var(--accent-glow);
    }
}

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

.nav__link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link:hover,
.nav__link.active {
    color: var(--text-primary);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition-base);
    border-radius: 2px;
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

.nav__link--cta {
    background: var(--accent);
    color: var(--bg-primary) !important;
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav__link--cta::after {
    display: none;
}

.nav__link--cta:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

.nav__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.nav__hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.nav__hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav__hamburger.active span:nth-child(2) {
    opacity: 0;
}

.nav__hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero Section ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: var(--nav-height);
}

.hero__canvas {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding: var(--space-xl);
}

.hero__label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 20px;
    border-radius: 50px;
    border: 1px solid var(--bg-card-border);
    background: rgba(22, 22, 22, 0.6);
    backdrop-filter: blur(10px);
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
}

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

.hero__title {
    margin-bottom: var(--space-lg);
    cursor: default;
    position: relative;
    display: block;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.hero__title::before {
    content: '';
    position: absolute;
    inset: -20px -40px;
    background: radial-gradient(ellipse at center, rgba(0, 255, 102, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
    opacity: 0;
    transition: opacity 1s ease;
    filter: blur(20px);
    pointer-events: none;
}

.hero__title.cyberpunk-bg-active::before {
    opacity: 1;
    animation: pulse-bg 5s infinite alternate;
}

@keyframes pulse-bg {
    0% {
        transform: scale(0.9);
        opacity: 0.5;
    }

    50% {
        transform: scale(1.1);
        opacity: 1;
    }

    100% {
        transform: scale(0.95);
        opacity: 0.8;
    }
}

.hero__title-line {
    display: block;
    font-family: var(--font-cyberpunk);
    font-size: var(--font-size-hero);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(0, 255, 102, 0.1);
    text-transform: uppercase;
}

.scramble-char {
    color: var(--accent);
    font-family: var(--font-cyberpunk);
    font-weight: 400;
    text-shadow: 0 0 15px var(--accent-glow-strong);
    display: inline-block;
    filter: drop-shadow(0 0 5px var(--accent));
}

.hero__title-line--accent {
    background: linear-gradient(135deg, var(--accent) 0%, #00cc88 50%, var(--accent) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 4s linear infinite;
    position: relative;
    text-shadow: 0 0 30px var(--accent-glow-strong);
}

@keyframes gradient-shift {
    0% {
        background-position: 0% center;
    }

    100% {
        background-position: 200% center;
    }
}

.hero__tagline {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    min-height: 1.7em;
    font-weight: 400;
}

.hero__cta-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-3xl);
}

.hero__stats {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--bg-card-border);
}

.hero__stat {
    text-align: center;
}

.hero__stat-value {
    display: inline-flex;
    align-items: flex-start;
    justify-content: center;
    gap: 2px;
}

.hero__stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1;
}

.hero__stat-plus {
    display: inline-block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    transform: translateY(0.18em);
}

.hero__stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
    margin-top: 10px;
}

.hero__scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    z-index: 0;
    pointer-events: none;
}

.hero__scroll-indicator span {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.hero__scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
    0% {
        opacity: 0;
        transform: scaleY(0);
        transform-origin: top;
    }

    50% {
        opacity: 1;
        transform: scaleY(1);
        transform-origin: top;
    }

    100% {
        opacity: 0;
        transform: scaleY(1);
        transform-origin: bottom;
    }
}

/* ---------- Sections ---------- */
.section {
    padding: var(--space-5xl) 0;
    position: relative;
}

.section__header {
    margin-bottom: var(--space-3xl);
}

.section__label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: var(--space-md);
}

.section__title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--text-primary);
}

/* ---------- About Section ---------- */
.about__grid {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: var(--space-4xl);
    align-items: start;
}

.about__image-wrapper {
    position: relative;
}

.about__image-frame {
    position: relative;
    aspect-ratio: 3 / 4;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
}

.about__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.about__image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

.about__image-placeholder i {
    font-size: 4rem;
    color: var(--text-tertiary);
    opacity: 0.5;
}

.about__image-border {
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    background: linear-gradient(135deg, var(--accent-glow), transparent 50%) border-box;
    pointer-events: none;
}

.about__floating-tag {
    position: absolute;
    bottom: -16px;
    right: -16px;
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: 50px;
    padding: 10px 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    box-shadow: var(--shadow-card);
}

.about__floating-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

.about__intro {
    font-size: var(--font-size-xl);
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.about__intro strong {
    color: var(--accent);
}

.about__text {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.about__highlights {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-top: var(--space-2xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--bg-card-border);
}

.about__highlight {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    transition: all var(--transition-base);
}

.about__highlight:hover {
    border-color: var(--accent-glow-strong);
    background: var(--bg-card-hover);
    transform: translateX(4px);
}

.about__highlight i {
    font-size: 1.5rem;
    color: var(--accent);
    flex-shrink: 0;
}

.about__highlight strong {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: 600;
}

.about__highlight span {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* ---------- Expertise Section ---------- */
.expertise {
    background: var(--bg-secondary);
}

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

.expertise__card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.expertise__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.expertise__card:hover {
    border-color: rgba(0, 255, 102, 0.2);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.expertise__card:hover::before {
    opacity: 1;
}

.expertise__card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--accent-glow);
    color: var(--accent);
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
}

.expertise__card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.expertise__card-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.expertise__card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.expertise__card-tags span {
    font-size: 11px;
    padding: 4px 10px;
    border-radius: 50px;
    background: rgba(0, 255, 102, 0.08);
    color: var(--accent);
    font-weight: 500;
    letter-spacing: 0.02em;
    border: 1px solid rgba(0, 255, 102, 0.12);
}

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

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-slow);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: rgba(0, 255, 102, 0.2);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
}

.project-card__image {
    position: relative;
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
    overflow: hidden;
}

.project-card__image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 2.5rem;
    opacity: 0.3;
    transition: all var(--transition-base);
}

.project-card:hover .project-card__image-placeholder {
    opacity: 0.5;
    transform: scale(1.1);
    color: var(--accent);
}

.project-card__overlay {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
}

.project-card__category {
    font-size: 11px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 50px;
    background: rgba(10, 10, 10, 0.7);
    backdrop-filter: blur(8px);
    color: var(--accent);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.project-card__content {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-card__title {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.project-card__desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
    flex: 1;
}

.project-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.project-card__tags span {
    font-size: 10px;
    padding: 3px 8px;
    border-radius: 50px;
    background: var(--bg-secondary);
    color: var(--text-tertiary);
    font-weight: 500;
    border: 1px solid var(--bg-card-border);
}

.project-card__link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 1px solid var(--bg-card-border);
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.project-card__link:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--bg-primary);
    transform: rotate(-15deg);
}

/* ---------- Research Section ---------- */
.research {
    background: var(--bg-secondary);
}

.research__intro {
    max-width: 720px;
    margin-bottom: var(--space-3xl);
}

.research__intro p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

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

.research__areas {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--space-3xl);
}

.research__area {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--bg-card-border);
    transition: all var(--transition-base);
    cursor: default;
}

.research__area:first-child {
    border-top: 1px solid var(--bg-card-border);
}

.research__area:hover {
    padding-left: var(--space-md);
}

.research__area:hover .research__area-number {
    color: var(--accent);
}

.research__area:hover .research__area-arrow {
    transform: translateX(4px);
    color: var(--accent);
}

.research__area-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--text-tertiary);
    min-width: 60px;
    transition: color var(--transition-base);
}

.research__area-content {
    flex: 1;
}

.research__area-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.research__area-content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.research__area-arrow {
    font-size: var(--font-size-xl);
    color: var(--text-tertiary);
    transition: all var(--transition-base);
}

.research__publications {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
}

.research__pub-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.research__pub-title i {
    color: var(--accent);
}

.research__pub-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.research__pub-item {
    padding: var(--space-md) var(--space-lg);
    border-left: 2px solid var(--accent-glow-strong);
    background: rgba(0, 255, 102, 0.02);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.research__pub-status {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 50px;
    background: var(--accent-glow);
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: var(--space-sm);
}

.research__pub-item p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---------- Achievements Section ---------- */
.achievements__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.achievement-card {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-xl) var(--space-2xl);
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-slow);
}

.achievement-card:hover {
    border-color: rgba(0, 255, 102, 0.2);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.achievement-card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--accent-glow);
    color: var(--accent);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.achievement-card__content h3 {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.achievement-card__content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

.achievement-card__year {
    font-size: 11px;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ---------- Contact Section ---------- */
.contact {
    background: var(--bg-secondary);
    text-align: center;
}

.contact .section__header {
    text-align: center;
}

.contact__text {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.8;
}

.contact__cta {
    margin-bottom: var(--space-2xl);
}

.contact__socials {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

.contact__social {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--bg-card-border);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 1.25rem;
    transition: all var(--transition-base);
}

.contact__social:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
    transform: translateY(-3px);
}

/* ---------- Footer ---------- */
.footer {
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--bg-card-border);
}

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

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

.footer__logo {
    font-size: var(--font-size-lg);
    font-weight: 800;
    color: var(--text-primary);
}

.footer__left p {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.footer__back-top {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.footer__back-top:hover {
    color: var(--accent);
    transform: translateY(-2px);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .section__title {
        font-size: var(--font-size-4xl);
    }

    .about__grid {
        grid-template-columns: 300px 1fr;
        gap: var(--space-2xl);
    }

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

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

@media (max-height: 800px) {
    .hero__scroll-indicator {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --space-5xl: 5rem;
    }

    .nav__links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        padding: var(--space-2xl);
        border-left: 1px solid var(--bg-card-border);
        transition: right var(--transition-slow);
        gap: var(--space-xl);
    }

    .nav__links.open {
        right: 0;
    }

    .nav__hamburger {
        display: flex;
    }

    .nav__link {
        font-size: var(--font-size-lg);
    }

    .hero__title-line {
        font-size: clamp(2.5rem, 12vw, 4rem);
    }

    .hero__stats {
        gap: var(--space-xl);
    }

    .hero__stat-number {
        font-size: var(--font-size-3xl);
    }

    .hero__cta-group {
        flex-direction: column;
    }

    .section__title {
        font-size: var(--font-size-3xl);
    }

    .about__grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .about__image-frame {
        max-width: 300px;
        margin: 0 auto;
    }

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

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

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

    .research__area {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .research__area-arrow {
        display: none;
    }

    .footer__content {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }

    .footer__left {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }

    .hero__stats {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .about__floating-tag {
        right: 0;
        bottom: -12px;
    }
}