/* =========================================
   Ahmed Dorra — Portfolio
   Design system + layout
   ========================================= */

:root {
    /* Palette */
    --bg: #0a0a0f;
    --bg-elevated: #12121a;
    --bg-surface: #1a1a24;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);

    --text: #e4e4e7;
    --text-muted: #a1a1aa;
    --text-dim: #71717a;

    --accent: #a855f7;          /* purple */
    --accent-2: #06b6d4;        /* cyan */
    --accent-3: #ec4899;        /* pink */
    --accent-4: #22c55e;        /* green */
    --warning: #f59e0b;

    --grad: linear-gradient(135deg, #a855f7 0%, #06b6d4 100%);
    --grad-2: linear-gradient(135deg, #ec4899 0%, #a855f7 100%);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

    /* Spacing */
    --container: 1200px;
    --gutter: clamp(1rem, 4vw, 3rem);
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 22px;

    /* Motion */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --t-fast: 200ms;
    --t-base: 400ms;
    --t-slow: 700ms;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* =========================================
   Reset
   ========================================= */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    position: relative;
}

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

button {
    border: none;
    background: none;
    font: inherit;
    color: inherit;
    cursor: pointer;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--t-fast) var(--ease-out);
}

ul,
ol {
    list-style: none;
}

::selection {
    background: rgba(168, 85, 247, 0.35);
    color: #fff;
}

/* Reusable skip link for keyboard users */
.skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    padding: 12px 18px;
    background: var(--accent);
    color: #fff;
    border-radius: var(--radius-sm);
    font-weight: 600;
    z-index: 1000;
    transition: top var(--t-fast) var(--ease-out);
}

.skip-link:focus {
    top: 16px;
}

/* =========================================
   Layout primitives
   ========================================= */

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.section {
    padding: clamp(4rem, 9vw, 8rem) 0;
    position: relative;
}

.section--feature {
    background: linear-gradient(180deg, transparent, rgba(168, 85, 247, 0.04), transparent);
}

.section--contact {
    padding-bottom: 4rem;
}

.section__header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 3rem;
}

.section__num {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent);
    letter-spacing: 0.05em;
}

.section__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.section__line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border), transparent);
    margin-left: 1.5rem;
}

.section__intro {
    color: var(--text-muted);
    font-size: clamp(1rem, 1.6vw, 1.125rem);
    max-width: 720px;
    margin: 0 0 3rem;
}

.section__intro code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: 2px 8px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--accent-2);
}

.section__intro a {
    color: var(--accent);
    border-bottom: 1px solid currentColor;
}

.section__intro a:hover {
    color: var(--accent-2);
}

/* =========================================
   Neural background canvas
   ========================================= */

#neural-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.45;
}

main,
nav,
footer {
    position: relative;
    z-index: 1;
}

/* =========================================
   Navigation
   ========================================= */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 1rem var(--gutter);
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border-bottom: 1px solid transparent;
    z-index: 100;
    transition: border-color var(--t-base) var(--ease-out),
                background var(--t-base) var(--ease-out);
}

.nav.is-scrolled {
    border-bottom-color: var(--border);
    background: rgba(10, 10, 15, 0.85);
}

.nav__logo {
    display: inline-flex;
    align-items: baseline;
    gap: 0.25rem;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1rem;
    color: var(--text);
}

.nav__logo-mark {
    color: var(--accent);
    transition: transform var(--t-base) var(--ease-out);
}

.nav__logo:hover .nav__logo-mark:first-child {
    transform: translateX(-2px);
}

.nav__logo:hover .nav__logo-mark:last-child {
    transform: translateX(2px);
}

.nav__links {
    display: flex;
    gap: 1.75rem;
    margin-left: auto;
}

.nav__links a {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    position: relative;
}

.nav__links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 1px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-base) var(--ease-out);
}

.nav__links a:hover,
.nav__links a:focus-visible {
    color: var(--text);
}

.nav__links a:hover::after,
.nav__links a:focus-visible::after {
    transform: scaleX(1);
}

.nav__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1rem;
    background: var(--text);
    color: var(--bg);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    transition: transform var(--t-fast) var(--ease-out),
                background var(--t-fast) var(--ease-out);
}

.nav__cta:hover {
    transform: translateY(-1px);
    background: var(--accent);
    color: #fff;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav__toggle span {
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform var(--t-fast) var(--ease-out),
                opacity var(--t-fast) var(--ease-out);
}

/* =========================================
   Hero
   ========================================= */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: clamp(7rem, 12vh, 10rem) var(--gutter) 4rem;
    position: relative;
}

.hero__inner {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

.hero__terminal {
    width: min(100%, 760px);
    background: rgba(18, 18, 26, 0.7);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(168, 85, 247, 0.12) inset,
        0 -1px 0 rgba(255, 255, 255, 0.05) inset;
}

.terminal__chrome {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1rem;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border);
    position: relative;
}

.terminal__dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.terminal__dot--red {
    background: #ff5f57;
}

.terminal__dot--yellow {
    background: #febc2e;
}

.terminal__dot--green {
    background: #28c840;
}

.terminal__title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-dim);
    letter-spacing: 0.03em;
}

.terminal__body {
    padding: 1.5rem 1.75rem 1.75rem;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    line-height: 1.65;
}

.terminal__line {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    align-items: baseline;
    color: var(--text-muted);
}

.terminal__output {
    margin-top: 0.25rem;
    margin-bottom: 1.1rem;
    padding-left: 0;
}

.terminal__prompt {
    color: var(--accent-4);
    font-weight: 600;
}

.terminal__sep {
    color: var(--text-dim);
}

.terminal__path {
    color: var(--accent-2);
    font-weight: 500;
}

.terminal__dollar {
    color: var(--text-dim);
    margin-right: 0.25rem;
}

.terminal__cmd {
    color: var(--text);
}

.terminal__output h1 {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 6vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    padding-top: 0.3rem;
    padding-bottom: 0.1rem;
}

.hero__role {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 2.6vw, 1.75rem);
    font-weight: 600;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 4px;
}

.hero__pitch {
    font-family: var(--font-sans);
    font-size: 0.975rem;
    line-height: 1.65;
    color: var(--text-muted);
    max-width: 64ch;
}

.hero__pitch em {
    font-style: normal;
    color: var(--accent-2);
    font-weight: 500;
}

.hero__pitch strong {
    color: var(--text);
    font-weight: 600;
}

.hero__results {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.35rem;
    font-family: var(--font-sans);
    font-size: 0.925rem;
    color: var(--text-muted);
}

.hero__results-num {
    display: inline-block;
    min-width: 8.5em;
    font-family: var(--font-mono);
    font-weight: 600;
    color: rgb(34, 197, 94);
}

.hero__cta {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.25rem;
}

.text-gradient {
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.cursor {
    display: inline-block;
    color: var(--accent);
    font-weight: 700;
    animation: blink 1.1s steps(2, start) infinite;
}

/* =========================================
   Buttons
   ========================================= */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.925rem;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    transition: transform var(--t-fast) var(--ease-out),
                background var(--t-fast) var(--ease-out),
                border-color var(--t-fast) var(--ease-out),
                color var(--t-fast) var(--ease-out);
    will-change: transform;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn--primary {
    background: var(--grad);
    color: #fff;
    box-shadow: 0 8px 24px rgba(168, 85, 247, 0.3);
}

.btn--primary:hover {
    box-shadow: 0 12px 32px rgba(168, 85, 247, 0.45);
}

.btn--ghost {
    background: transparent;
    color: var(--text);
    border-color: var(--border-strong);
}

.btn--ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* =========================================
   Hero meta strip
   ========================================= */

.hero__meta {
    display: flex;
    align-items: stretch;
    gap: 1.25rem;
    flex-wrap: wrap;
    justify-content: center;
    padding: 0.85rem 1.5rem;
    background: rgba(18, 18, 26, 0.6);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
}

.hero__meta-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.hero__meta-label {
    color: var(--text-dim);
    letter-spacing: 0.05em;
}

.hero__meta-value {
    color: var(--text);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.hero__meta-divider {
    width: 1px;
    background: var(--border);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-4);
    box-shadow: 0 0 12px var(--accent-4);
    animation: pulse-dot 2s ease-in-out infinite;
}

.hero__scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 26px;
    height: 42px;
    border: 1px solid var(--border-strong);
    border-radius: 14px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
    opacity: 0.6;
    transition: opacity var(--t-fast) var(--ease-out);
}

.hero__scroll:hover {
    opacity: 1;
}

.hero__scroll span {
    width: 3px;
    height: 8px;
    background: var(--accent);
    border-radius: 2px;
    animation: scroll-bob 2s ease-in-out infinite;
}

/* =========================================
   About
   ========================================= */

.about__grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about__bio {
    font-size: 1.05rem;
    color: var(--text-muted);
}

.about__bio > * + * {
    margin-top: 1.25rem;
}

.about__lead {
    font-family: var(--font-display);
    font-size: clamp(1.15rem, 1.9vw, 1.45rem);
    line-height: 1.5;
    color: var(--text);
    font-weight: 500;
}

.about__bio em {
    font-style: italic;
    color: var(--text);
}

.about__bio strong {
    color: var(--text);
    font-weight: 600;
}

.about__bio a {
    color: var(--accent-2);
    border-bottom: 1px solid transparent;
    transition: border-color var(--t-fast);
}

.about__bio a:hover {
    border-bottom-color: currentColor;
}

.about__stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(18, 18, 26, 0.6);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.stat {
    padding: 1.25rem 1rem;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    transition: transform var(--t-base) var(--ease-out),
                border-color var(--t-base) var(--ease-out);
}

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

.stat__value {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    line-height: 1;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    margin-bottom: 0.5rem;
}

.stat__label {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.35;
    letter-spacing: 0.02em;
}

/* =========================================
   Bento projects
   ========================================= */

.bento {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-auto-rows: minmax(100px, auto);
    gap: 1.25rem;
}

.bento__card {
    grid-column: span 3;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.75rem;
    background: rgba(18, 18, 26, 0.6);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    transition: transform var(--t-base) var(--ease-out),
                border-color var(--t-base) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.bento__card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        700px circle at var(--mx, 50%) var(--my, 0%),
        rgba(var(--accent), 0.12),
        transparent 40%
    );
    opacity: 0;
    transition: opacity var(--t-slow) var(--ease-out);
    pointer-events: none;
}

.bento__card:hover {
    transform: translateY(-3px);
    border-color: rgba(var(--accent), 0.4);
}

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

.bento__card--featured {
    grid-column: span 6;
}

.bento__tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    color: rgba(var(--accent), 1);
    font-weight: 600;
    align-self: flex-start;
    padding: 4px 10px;
    background: rgba(var(--accent), 0.1);
    border: 1px solid rgba(var(--accent), 0.25);
    border-radius: 999px;
}

.bento__title {
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 2.4vw, 1.85rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.015em;
}

.bento__desc {
    color: var(--text-muted);
    font-size: 0.975rem;
    line-height: 1.6;
    flex: 1;
}

.bento__desc code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    padding: 1px 6px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--accent-2);
}

.bento__architecture {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.4rem;
    padding: 0.85rem;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
    overflow-x: auto;
}

.arch-node {
    padding: 5px 12px;
    background: rgba(var(--accent), 0.08);
    border: 1px solid rgba(var(--accent), 0.18);
    border-radius: 6px;
    color: var(--text);
    white-space: nowrap;
    transition: background var(--t-fast);
}

.arch-node--active {
    background: rgba(var(--accent), 0.25);
    border-color: rgba(var(--accent), 0.6);
    color: #fff;
    box-shadow: 0 0 14px rgba(var(--accent), 0.4);
}

.arch-arrow {
    color: rgba(var(--accent), 0.7);
    font-weight: 600;
}

.bento__stat {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.bento__stat > div {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    text-align: center;
}

.bento__stat .num {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
    color: rgba(var(--accent), 1);
}

.bento__stat .lbl {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-dim);
    line-height: 1.3;
}

.bento__tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.bento__tech span {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 4px 10px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text-muted);
    transition: border-color var(--t-fast), color var(--t-fast);
}

.bento__card:hover .bento__tech span {
    border-color: var(--border-strong);
}

.bento__links {
    display: flex;
    gap: 0.75rem;
    margin-top: auto;
    padding-top: 0.5rem;
}

.bento__link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.6rem 1rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text);
    transition: all var(--t-fast) var(--ease-out);
}

.bento__link:hover {
    background: var(--text);
    color: var(--bg);
    transform: translateY(-1px);
}

.bento__link--demo {
    background: rgba(var(--accent), 0.18);
    border-color: rgba(var(--accent), 0.4);
    color: #fff;
}

.bento__link--demo:hover {
    background: rgba(var(--accent), 1);
    color: #fff;
}

/* "Earlier work" expandable */
.more-projects {
    margin-top: 2.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.more-projects summary {
    list-style: none;
    cursor: pointer;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(18, 18, 26, 0.5);
    color: var(--text-muted);
    font-weight: 500;
    transition: background var(--t-fast), color var(--t-fast);
}

.more-projects summary::-webkit-details-marker {
    display: none;
}

.more-projects summary:hover {
    background: rgba(168, 85, 247, 0.08);
    color: var(--text);
}

.more-projects summary svg {
    transition: transform var(--t-base) var(--ease-out);
}

.more-projects[open] summary svg {
    transform: rotate(180deg);
}

.more-projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.15);
}

.mini-project {
    padding: 1.1rem 1.25rem;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: transform var(--t-fast), border-color var(--t-fast);
}

.mini-project:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
}

.mini-project h4 {
    font-family: var(--font-display);
    font-weight: 600;
    margin-bottom: 0.35rem;
    font-size: 1rem;
    color: var(--text);
}

.mini-project p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.65rem;
    line-height: 1.5;
}

.mini-project__tech {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-2);
    letter-spacing: 0.02em;
}

/* =========================================
   Skills
   ========================================= */

.skills__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.skill-card {
    padding: 1.6rem;
    background: rgba(18, 18, 26, 0.55);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: transform var(--t-base) var(--ease-out),
                border-color var(--t-base) var(--ease-out);
}

.skill-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
}

.skill-card__head {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px dashed var(--border);
    color: var(--accent);
}

.skill-card__head h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text);
}

.skill-card__list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.skill-card__list li {
    display: grid;
    grid-template-columns: 1fr 100px;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.skill-bar {
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 999px;
    overflow: hidden;
}

.skill-bar__fill {
    display: block;
    height: 100%;
    width: 0;
    background: var(--grad);
    border-radius: inherit;
    transition: width 1.2s var(--ease-out);
}

.skill-card.is-visible .skill-bar__fill {
    width: var(--w);
}

/* =========================================
   Timeline
   ========================================= */

.timeline {
    position: relative;
    margin-top: 1rem;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 9px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: linear-gradient(180deg, var(--accent), var(--accent-2), transparent);
}

.timeline__item {
    position: relative;
    padding-bottom: 2.5rem;
}

.timeline__item:last-child {
    padding-bottom: 0;
}

.timeline__dot {
    position: absolute;
    left: -2rem;
    top: 6px;
    width: 18px;
    height: 18px;
    background: var(--bg);
    border: 2px solid var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.12);
}

.timeline__dot[data-type="education"] {
    border-color: var(--accent-2);
    box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.12);
}

.timeline__content {
    padding: 1.25rem 1.5rem;
    background: rgba(18, 18, 26, 0.5);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: transform var(--t-fast), border-color var(--t-fast);
}

.timeline__content:hover {
    transform: translateX(4px);
    border-color: var(--border-strong);
}

.timeline__date {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    letter-spacing: 0.04em;
    margin-bottom: 0.5rem;
}

.timeline__title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
    color: var(--text);
}

.timeline__org {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.timeline__bullets {
    list-style: none;
    padding: 0;
}

.timeline__bullets li {
    position: relative;
    padding-left: 1.1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.55;
    margin-bottom: 0.35rem;
}

.timeline__bullets li::before {
    content: '–';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.certs {
    margin-top: 3.5rem;
    padding: 1.75rem 2rem;
    background: rgba(18, 18, 26, 0.5);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.certs__title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--text);
}

.certs__grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.cert {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    padding: 6px 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text-muted);
    transition: border-color var(--t-fast), color var(--t-fast);
}

.cert:hover {
    border-color: var(--accent);
    color: var(--text);
}

/* =========================================
   Publication
   ========================================= */

.publication {
    max-width: 880px;
    margin: 0 auto;
    padding: 2.5rem;
    background: linear-gradient(180deg, rgba(168, 85, 247, 0.08), rgba(6, 182, 212, 0.05));
    border: 1px solid rgba(168, 85, 247, 0.25);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    position: relative;
    overflow: hidden;
}

.publication::before {
    content: '"';
    position: absolute;
    top: -60px;
    right: -10px;
    font-family: serif;
    font-size: 280px;
    color: rgba(168, 85, 247, 0.06);
    line-height: 1;
}

.publication__badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    color: var(--accent);
    padding: 5px 12px;
    background: rgba(168, 85, 247, 0.12);
    border: 1px solid rgba(168, 85, 247, 0.3);
    border-radius: 999px;
    margin-bottom: 1.25rem;
}

.publication__title {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2.6vw, 1.85rem);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.publication__abstract {
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

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

.publication__venue {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-dim);
}

.publication__link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1rem;
    background: rgba(168, 85, 247, 0.15);
    border: 1px solid rgba(168, 85, 247, 0.4);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--t-fast);
}

.publication__link:hover {
    background: var(--accent);
    transform: translateY(-1px);
}

/* =========================================
   Contact
   ========================================= */

.contact {
    text-align: center;
    max-width: 920px;
    margin: 0 auto;
}

.contact__pitch {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.contact__sub {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.contact__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.contact__card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 1.5rem;
    background: rgba(18, 18, 26, 0.55);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-align: left;
    transition: transform var(--t-base) var(--ease-out),
                border-color var(--t-base) var(--ease-out),
                background var(--t-base) var(--ease-out);
}

.contact__card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    background: rgba(168, 85, 247, 0.05);
}

.contact__icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: rgba(168, 85, 247, 0.12);
    border: 1px solid rgba(168, 85, 247, 0.25);
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.contact__label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-dim);
    letter-spacing: 0.08em;
}

.contact__value {
    font-size: 0.95rem;
    color: var(--text);
    font-weight: 500;
    overflow-wrap: anywhere;
}

.contact__cv {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.95rem 2rem;
    background: var(--grad);
    color: #fff;
    border-radius: 999px;
    font-weight: 600;
    box-shadow: 0 12px 32px rgba(168, 85, 247, 0.35);
    transition: transform var(--t-fast) var(--ease-out),
                box-shadow var(--t-fast) var(--ease-out);
}

.contact__cv:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 40px rgba(168, 85, 247, 0.5);
}

/* =========================================
   Footer
   ========================================= */

.footer {
    padding: 2rem var(--gutter);
    border-top: 1px solid var(--border);
}

.footer__inner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-dim);
}

.footer__sep {
    color: var(--border-strong);
}

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

.footer a:hover {
    color: var(--accent-2);
}

.bento__media {
    display: block;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--t-base) var(--ease-out);
}

.bento__media:hover {
    border-color: rgba(var(--accent), 0.4);
}

.bento__media img {
    display: block;
    width: 100%;
    height: auto;
}

@media (max-width: 600px) {
    .hero__results-num {
        display: block;
        min-width: 0;
    }
}