:root {
    --color-primary: #337dff;
    --color-primary-dark: #185ed8;
    --color-primary-soft: #eaf2ff;
    --color-ink: #152033;
    --color-text: #445066;
    --color-muted: #748096;
    --color-surface: #ffffff;
    --color-surface-muted: #f5f8fc;
    --color-border: #dce4f0;
    --color-dark: #0c1422;
    --color-dark-soft: #162239;
    --shadow-soft: 0 18px 50px rgba(20, 39, 75, 0.09);
    --shadow-card: 0 12px 35px rgba(20, 39, 75, 0.08);
    --radius-small: 12px;
    --radius-medium: 20px;
    --radius-large: 28px;
    --page-width: 1180px;
    --content-width: 800px;
    --transition: 220ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--color-text);
    background: var(--color-surface);
    font-family:
        Inter,
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
    font-size: 1rem;
    line-height: 1.7;
    text-rendering: optimizeLegibility;
}

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

a {
    color: inherit;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2,
h3 {
    color: var(--color-ink);
    line-height: 1.18;
}

h1 {
    margin-bottom: 0.6rem;
    font-size: clamp(2.35rem, 6vw, 4.9rem);
    letter-spacing: -0.055em;
}

h2 {
    margin-bottom: 1rem;
    font-size: clamp(2rem, 4vw, 3.3rem);
    letter-spacing: -0.04em;
}

h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.skip-link {
    position: fixed;
    z-index: 100;
    top: 1rem;
    left: 1rem;
    padding: 0.7rem 1rem;
    color: #fff;
    background: var(--color-primary);
    border-radius: 0.5rem;
    transform: translateY(-180%);
    transition: transform var(--transition);
}

.skip-link:focus {
    transform: translateY(0);
}

.page-container {
    width: min(calc(100% - 2.5rem), var(--page-width));
    margin-inline: auto;
}

.content-width {
    max-width: var(--content-width);
}

.section {
    padding-block: clamp(5rem, 9vw, 8.5rem);
}

.section--muted {
    background:
        radial-gradient(circle at 8% 8%, rgba(51, 125, 255, 0.08), transparent 28rem),
        var(--color-surface-muted);
}

.section--dark {
    color: #c6d0e2;
    background:
        radial-gradient(circle at 80% 15%, rgba(51, 125, 255, 0.22), transparent 30rem),
        var(--color-dark);
}

.section--dark h2 {
    color: #fff;
}

.section-kicker,
.eyebrow {
    margin-bottom: 0.75rem;
    color: var(--color-primary);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.section-heading {
    max-width: 720px;
    margin: 0 auto clamp(3.25rem, 7vw, 5.5rem);
    text-align: center;
}

.section-heading p:last-child {
    margin-bottom: 0;
    color: var(--color-muted);
    font-size: 1.05rem;
}

/* Hero */
.hero {
    position: relative;
    min-height: min(860px, 92svh);
    display: grid;
    align-items: center;
    overflow: hidden;
    color: #fff;
    background:
        linear-gradient(135deg, rgba(5, 13, 27, 0.8), rgba(10, 28, 52, 0.48)),
        url("assets/hero-switzerland.jpg") center 44% / cover no-repeat;
    isolation: isolate;
}

.hero::before {
    content: "";
    position: absolute;
    inset: auto -10% -35% auto;
    z-index: -1;
    width: 45rem;
    aspect-ratio: 1;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 50%;
    box-shadow:
        0 0 0 8rem rgba(51, 125, 255, 0.06),
        0 0 0 16rem rgba(51, 125, 255, 0.035);
}

.hero__overlay {
    position: absolute;
    inset: 0;
    z-index: -2;
    background:
        linear-gradient(to top, rgba(8, 18, 34, 0.8), transparent 48%),
        linear-gradient(to right, rgba(8, 18, 34, 0.55), transparent 70%);
}

.hero__content {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: center;
    padding-block: 7rem;
}

.profile-photo {
    position: relative;
    width: clamp(170px, 22vw, 250px);
    aspect-ratio: 1;
    padding: 0.55rem;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.42);
    border-radius: 42% 58% 51% 49% / 46% 38% 62% 54%;
    box-shadow: 0 25px 75px rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(8px);
    animation: float-profile 7s ease-in-out infinite;
}

.profile-photo::after {
    content: "";
    position: absolute;
    inset: 0.55rem;
    pointer-events: none;
    border: 2px solid rgba(51, 125, 255, 0.85);
    border-radius: inherit;
}

.profile-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
}

.hero__identity {
    max-width: 760px;
}

.hero__identity h1 {
    color: #fff;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.22);
}

.hero__title {
    margin-bottom: 2rem;
    color: #dce8ff;
    font-size: clamp(1.2rem, 3vw, 1.7rem);
    font-weight: 500;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
}

.button {
    display: inline-flex;
    min-height: 3.15rem;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.2rem;
    border: 1px solid transparent;
    border-radius: 999px;
    font-weight: 750;
    text-decoration: none;
    transition:
        transform var(--transition),
        background-color var(--transition),
        border-color var(--transition),
        box-shadow var(--transition);
}

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

.button--primary {
    color: #fff;
    background: var(--color-primary);
    box-shadow: 0 12px 30px rgba(51, 125, 255, 0.33);
}

.button--primary:hover {
    background: var(--color-primary-dark);
}

.button--secondary {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.36);
    backdrop-filter: blur(10px);
}

.button--secondary:hover {
    background: rgba(255, 255, 255, 0.14);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    width: 2rem;
    height: 3.2rem;
    border: 1px solid rgba(255, 255, 255, 0.52);
    border-radius: 999px;
    transform: translateX(-50%);
}

.scroll-indicator span {
    position: absolute;
    top: 0.6rem;
    left: 50%;
    width: 0.28rem;
    height: 0.6rem;
    background: #fff;
    border-radius: 999px;
    transform: translateX(-50%);
    animation: scroll-cue 1.8s ease-in-out infinite;
}

/* Introduction */
.introduction {
    position: relative;
}

.introduction::after {
    content: "";
    position: absolute;
    top: 8%;
    right: 4%;
    width: 9rem;
    height: 9rem;
    opacity: 0.45;
    background-image: radial-gradient(var(--color-primary) 1.5px, transparent 1.5px);
    background-size: 14px 14px;
    mask-image: linear-gradient(to bottom, #000, transparent);
}

.introduction__lead {
    color: var(--color-ink);
    font-size: clamp(1.2rem, 2.2vw, 1.48rem);
    line-height: 1.6;
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.3rem;
}

.skill-card {
    padding: clamp(1.5rem, 4vw, 2.25rem);
    background: rgba(255, 255, 255, 0.84);
    border: 1px solid rgba(220, 228, 240, 0.9);
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(10px);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        border-color var(--transition);
}

.skill-card:hover {
    border-color: rgba(51, 125, 255, 0.35);
    box-shadow: var(--shadow-soft);
    transform: translateY(-5px);
}

.skill-card__icon {
    display: grid;
    width: 3rem;
    height: 3rem;
    place-items: center;
    margin-bottom: 1.3rem;
    color: var(--color-primary);
    background: var(--color-primary-soft);
    border-radius: 1rem;
    font-weight: 850;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.tag-list li {
    padding: 0.34rem 0.72rem;
    color: #38506f;
    background: #f1f5fb;
    border: 1px solid #e1e8f2;
    border-radius: 999px;
    font-size: 0.88rem;
    transition:
        color var(--transition),
        background-color var(--transition),
        border-color var(--transition);
}

.tag-list li:hover {
    color: var(--color-primary-dark);
    background: var(--color-primary-soft);
    border-color: #c6d9ff;
}

/* Timeline */
.experience {
    overflow: hidden;
}

.timeline {
    position: relative;
    max-width: 1120px;
    margin-inline: auto;
}

.timeline::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 3.4rem;
    left: 50%;
    width: 2px;
    background:
        linear-gradient(
            to bottom,
            rgba(51, 125, 255, 0.1),
            var(--color-primary) 8%,
            var(--color-primary) 92%,
            rgba(51, 125, 255, 0.1)
        );
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-bottom: 2.6rem;
}

.timeline-item--left .timeline-card {
    grid-column: 1;
    margin-right: 3.4rem;
}

.timeline-item--right .timeline-card {
    grid-column: 2;
    margin-left: 3.4rem;
}

.timeline-marker {
    position: absolute;
    z-index: 2;
    top: 2rem;
    left: 50%;
    width: 1rem;
    height: 1rem;
    background: #fff;
    border: 4px solid var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 0 7px rgba(51, 125, 255, 0.13);
    transform: translateX(-50%);
    transition:
        background-color var(--transition),
        box-shadow var(--transition);
}

.timeline-item:hover .timeline-marker {
    background: var(--color-primary);
    box-shadow: 0 0 0 10px rgba(51, 125, 255, 0.14);
}

.timeline-card {
    position: relative;
    padding: clamp(1.35rem, 3vw, 2rem);
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-card);
    transition:
        transform var(--transition),
        border-color var(--transition),
        box-shadow var(--transition);
}

.timeline-card:hover {
    border-color: rgba(51, 125, 255, 0.4);
    box-shadow: var(--shadow-soft);
    transform: translateY(-4px);
}

.timeline-item--left .timeline-card::after,
.timeline-item--right .timeline-card::after {
    content: "";
    position: absolute;
    top: 2rem;
    width: 0.9rem;
    height: 0.9rem;
    background: #fff;
    border-top: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
}

.timeline-item--left .timeline-card::after {
    right: -0.49rem;
    transform: rotate(45deg);
}

.timeline-item--right .timeline-card::after {
    left: -0.49rem;
    transform: rotate(-135deg);
}

.timeline-card__header {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 0.3rem;
}

.timeline-card__header h3 {
    margin-bottom: 0;
}

.timeline-card__header time {
    flex: 0 0 auto;
    color: var(--color-muted);
    font-size: 0.82rem;
    font-weight: 700;
    white-space: nowrap;
}

.timeline-card__company {
    margin-bottom: 0.2rem;
    color: var(--color-primary);
    font-weight: 800;
}

.timeline-card__meta {
    margin-bottom: 1rem;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.timeline-card ul {
    margin: 0;
    padding-left: 1.15rem;
}

.timeline-card li + li {
    margin-top: 0.42rem;
}

.timeline-card li::marker {
    color: var(--color-primary);
}

.timeline-start {
    position: relative;
    z-index: 2;
    display: grid;
    width: 4.5rem;
    height: 4.5rem;
    place-items: center;
    margin: 1rem auto 0;
    color: #fff;
    background: var(--color-primary);
    border: 8px solid var(--color-primary-soft);
    border-radius: 50%;
    box-shadow: 0 14px 30px rgba(51, 125, 255, 0.28);
    font-size: 0.82rem;
    font-weight: 800;
}

/* Contact */
.contact__layout {
    display: grid;
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: clamp(3rem, 8vw, 7rem);
    align-items: start;
}

.contact__layout p:last-child {
    margin-bottom: 0;
}

.contact-links {
    display: grid;
    gap: 0.9rem;
}

.contact-links a,
.contact-links__item {
    display: grid;
    grid-template-columns: minmax(100px, 0.3fr) minmax(0, 1fr);
    gap: 1rem;
    align-items: center;
    padding: 1rem 1.15rem;
    color: #dce6f8;
    background: rgba(255, 255, 255, 0.055);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-small);
    text-decoration: none;
    transition:
        background-color var(--transition),
        border-color var(--transition),
        transform var(--transition);
}

.contact-links a:hover {
    background: rgba(51, 125, 255, 0.12);
    border-color: rgba(51, 125, 255, 0.48);
    transform: translateX(4px);
}

.contact-links__label {
    color: #fff;
    font-weight: 800;
}

/* Footer */
.footer {
    color: #8f9bb0;
    background: #080e18;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__content {
    display: flex;
    min-height: 5rem;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
}

.footer p {
    margin-bottom: 0;
}

.footer a {
    color: #cbd5e5;
    text-decoration: none;
}

.footer a:hover {
    color: #fff;
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition:
        opacity 650ms ease,
        transform 650ms cubic-bezier(0.2, 0.75, 0.3, 1);
}

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

/* Focus */
:focus-visible {
    outline: 3px solid rgba(51, 125, 255, 0.62);
    outline-offset: 4px;
}

/* Animations */
@keyframes float-profile {
    0%,
    100% {
        transform: translateY(0) rotate(-0.5deg);
    }

    50% {
        transform: translateY(-10px) rotate(0.5deg);
    }
}

@keyframes scroll-cue {
    0% {
        opacity: 0;
        transform: translate(-50%, 0);
    }

    35% {
        opacity: 1;
    }

    100% {
        opacity: 0;
        transform: translate(-50%, 1.3rem);
    }
}

/* Tablet */
@media (max-width: 920px) {
    .hero {
        min-height: 760px;
    }

    .hero__content {
        grid-template-columns: 1fr;
        justify-items: center;
        text-align: center;
    }

    .hero__actions {
        justify-content: center;
    }

    .timeline::before {
        left: 1rem;
    }

    .timeline-item {
        display: block;
        padding-left: 3rem;
    }

    .timeline-item--left .timeline-card,
    .timeline-item--right .timeline-card {
        margin: 0;
    }

    .timeline-marker {
        left: 1rem;
    }

    .timeline-item--left .timeline-card::after,
    .timeline-item--right .timeline-card::after {
        top: 2rem;
        right: auto;
        left: -0.49rem;
        transform: rotate(-135deg);
    }

    .timeline-start {
        margin-left: -1.25rem;
    }

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

/* Mobile */
@media (max-width: 680px) {
    .page-container {
        width: min(calc(100% - 1.5rem), var(--page-width));
    }

    .section {
        padding-block: 4.5rem;
    }

    .hero {
        min-height: 720px;
    }

    .hero__content {
        padding-block: 5.5rem 7rem;
    }

    .profile-photo {
        width: 155px;
    }

    .hero__actions {
        width: 100%;
    }

    .button {
        width: 100%;
    }

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

    .timeline-item {
        padding-left: 2.6rem;
    }

    .timeline::before,
    .timeline-marker {
        left: 0.75rem;
    }

    .timeline-start {
        margin-left: -1.5rem;
    }

    .timeline-card__header {
        display: block;
    }

    .timeline-card__header time {
        display: inline-block;
        margin-top: 0.5rem;
    }

    .contact-links a,
    .contact-links__item {
        grid-template-columns: 1fr;
        gap: 0.15rem;
    }

    .footer__content {
        flex-direction: column;
        justify-content: center;
        padding-block: 1.2rem;
        text-align: center;
    }
}

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

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

    .reveal {
        opacity: 1;
        transform: none;
    }
}