/* ------------------------------
   Design variables
------------------------------ */

:root {
    --color-background: #f5f5f1;
    --color-surface: #ffffff;
    --color-surface-muted: #e9ebe5;

    --color-dark: #101c1a;
    --color-dark-soft: #1a2926;

    --color-text: #17201e;
    --color-text-muted: #5d6966;

    --color-accent: #2a6865;;
    --color-accent-dark: #91ad2a;

    --color-border: rgba(16, 28, 26, 0.14);

    --font-body:
        Inter,
        "Segoe UI",
        Arial,
        sans-serif;

    --container-width: 1180px;
    --border-radius: 18px;
    --transition: 180ms ease;
}


/* ------------------------------
   Basic reset
------------------------------ */

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--color-background);
    color: var(--color-text);
    font-family: var(--font-body);
    line-height: 1.6;
}

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

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

button,
a {
    -webkit-tap-highlight-color: transparent;
}

button {
    color: inherit;
    font: inherit;
}


/* ------------------------------
   Reusable layout classes
------------------------------ */

.container {
    width: min(calc(100% - 40px), var(--container-width));
    margin-inline: auto;
}

.narrow-container {
    max-width: 820px;
}

.section {
    padding: 110px 0;
}

.section-muted {
    background: var(--color-surface-muted);
}

.section-label {
    margin-bottom: 18px;
    color: var(--color-accent-dark);
    font-size: 0.78rem;
    font-weight: 750;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    line-height: 1.1;
    letter-spacing: -0.035em;
}

h1 {
    max-width: 820px;
    font-size: clamp(3rem, 7vw, 6.7rem);
    font-weight: 650;
}

h2 {
    font-size: clamp(2.1rem, 4vw, 4rem);
    font-weight: 620;
}

h3 {
    font-size: 1.35rem;
}

p {
    color: var(--color-text-muted);
}

.large-paragraph {
    margin: 35px 0 24px;
    color: var(--color-text);
    font-size: clamp(1.25rem, 2vw, 1.65rem);
    line-height: 1.55;
}


/* ------------------------------
   Header
------------------------------ */

.site-header {
    position: fixed;
    z-index: 1000;
    top: 0;
    width: 100%;
    border-bottom: 1px solid transparent;
    background: rgba(245, 245, 241, 0.88);
    backdrop-filter: blur(16px);
    transition:
        border-color var(--transition),
        box-shadow var(--transition);
}

.site-header.scrolled {
    border-color: var(--color-border);
    box-shadow: 0 8px 30px rgba(16, 28, 26, 0.05);
}

.navigation {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.05em;
}

.logo span {
    color: var(--color-accent-dark);
}

.navigation-links {
    display: flex;
    align-items: center;
    gap: 34px;
}

.navigation-links a {
    color: var(--color-text-muted);
    font-size: 0.93rem;
    font-weight: 600;
    transition: color var(--transition);
}

.navigation-links a:hover {
    color: var(--color-text);
}

.menu-button {
    display: none;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.menu-button span {
    display: block;
    width: 25px;
    height: 2px;
    margin: 5px 0;
    background: var(--color-dark);
}


/* ------------------------------
   Hero
------------------------------ */

.hero {
    min-height: 100vh;
    padding: 160px 0 90px;
    display: flex;
    align-items: center;
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.75fr) minmax(280px, 0.65fr);
    align-items: end;
    gap: 70px;
}

.eyebrow {
    margin-bottom: 24px;
    color: var(--color-accent-dark);
    font-size: 0.82rem;
    font-weight: 750;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.hero h1 span {
    color: var(--color-accent-dark);
}

.hero-description {
    max-width: 700px;
    margin-top: 32px;
    font-size: clamp(1.05rem, 1.7vw, 1.3rem);
}

.hero-actions {
    margin-top: 42px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.button {
    min-height: 52px;
    padding: 0 25px;
    border: 1px solid var(--color-dark);
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.92rem;
    font-weight: 700;
    transition:
        background var(--transition),
        color var(--transition),
        transform var(--transition);
}

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

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

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

.button-secondary:hover {
    background: var(--color-dark);
    color: #ffffff;
}

.profile-card {
    padding: 32px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background: var(--color-surface);
    box-shadow: 0 25px 70px rgba(16, 28, 26, 0.07);
}

.profile-card-label {
    margin-bottom: 24px;
    color: var(--color-accent-dark);
    font-size: 0.72rem;
    font-weight: 750;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.profile-card h2 {
    font-size: 1.65rem;
}

.profile-title {
    margin-top: 6px;
}

.profile-list {
    margin: 28px 0;
    list-style: none;
}

.profile-list li {
    padding: 12px 0;
    border-top: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 0.92rem;
}

.profile-list li:last-child {
    border-bottom: 1px solid var(--color-border);
}

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

.availability-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 0 5px rgba(182, 214, 70, 0.2);
}


/* ------------------------------
   Section headings
------------------------------ */

.section-heading {
    margin-bottom: 54px;
    display: grid;
    grid-template-columns: 1fr 350px;
    align-items: end;
    gap: 50px;
}

.section-heading h2 {
    max-width: 700px;
}

.section-heading > p {
    font-size: 1.05rem;
}


/* ------------------------------
   Service cards
------------------------------ */

.card-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.service-card {
    min-height: 300px;
    padding: 34px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background: var(--color-surface);
    display: flex;
    flex-direction: column;
    transition:
        transform var(--transition),
        box-shadow var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(16, 28, 26, 0.07);
}

.card-number {
    margin-bottom: auto;
    color: var(--color-accent-dark);
    font-size: 0.8rem;
    font-weight: 800;
}

.service-card h3 {
    margin-bottom: 14px;
}

.service-card p {
    max-width: 490px;
}


/* ------------------------------
   Experience
------------------------------ */

.experience-layout {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 90px;
}

.section-heading-sticky {
    align-self: start;
    position: sticky;
    top: 130px;
}

.section-heading-sticky h2 {
    margin-bottom: 28px;
}

.experience-item {
    padding: 36px 0;
    border-top: 1px solid var(--color-border);
}

.experience-item:last-child {
    border-bottom: 1px solid var(--color-border);
}

.experience-item h3 {
    margin-bottom: 12px;
}

.experience-item p {
    max-width: 620px;
}


/* ------------------------------
   Résumé downloads
------------------------------ */

.resume-section {
    background: var(--color-accent);
}

.resume-layout {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    align-items: end;
    gap: 70px;
}

.resume-section .section-label,
.resume-section p {
    color: rgba(16, 28, 26, 0.72);
}

.resume-section h2 {
    margin-bottom: 20px;
}

.resume-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.resume-download {
    min-height: 170px;
    padding: 26px;
    border: 1px solid rgba(16, 28, 26, 0.22);
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.42);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition:
        background var(--transition),
        transform var(--transition);
}

.resume-download:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: translateY(-4px);
}

.resume-language {
    font-size: 1.55rem;
    font-weight: 750;
}

.resume-action {
    font-size: 0.85rem;
    font-weight: 700;
}


/* ------------------------------
   Contact
------------------------------ */

.contact-section {
    background: var(--color-dark);
    color: #ffffff;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 100px;
}

.contact-section h2 {
    max-width: 760px;
}

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

.contact-content p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 1.05rem;
}

.contact-links {
    margin-top: 34px;
    display: flex;
    flex-direction: column;
}

.contact-links a {
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    font-weight: 650;
    transition: color var(--transition);
}

.contact-links a:first-child {
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.contact-links a:hover {
    color: var(--color-accent);
}


/* ------------------------------
   Footer
------------------------------ */

.site-footer {
    padding: 25px 0;
    background: var(--color-dark);
    color: #ffffff;
}

.footer-content {
    padding-top: 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.14);
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.footer-content p,
.footer-content a {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.8rem;
}


/* ------------------------------
   Keyboard accessibility
------------------------------ */

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--color-accent-dark);
    outline-offset: 4px;
}


/* ------------------------------
   Tablet layout
------------------------------ */

@media (max-width: 900px) {

    .section {
        padding: 85px 0;
    }

    .hero-layout,
    .experience-layout,
    .resume-layout,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .hero-layout {
        align-items: start;
    }

    .profile-card {
        max-width: 500px;
    }

    .section-heading {
        grid-template-columns: 1fr;
    }

    .section-heading-sticky {
        position: static;
    }

    .experience-layout,
    .resume-layout,
    .contact-layout {
        gap: 55px;
    }
}


/* ------------------------------
   Mobile layout
------------------------------ */

@media (max-width: 680px) {

    .container {
        width: min(calc(100% - 28px), var(--container-width));
    }

    .hero {
        min-height: auto;
        padding-top: 130px;
    }

    .menu-button {
        z-index: 2;
        display: block;
    }

    .navigation-links {
        position: absolute;
        top: 66px;
        right: 14px;
        left: 14px;
        padding: 20px;
        border: 1px solid var(--color-border);
        border-radius: 14px;
        background: var(--color-surface);
        box-shadow: 0 18px 45px rgba(16, 28, 26, 0.1);
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }

    .navigation-links.open {
        display: flex;
    }

    .navigation-links a {
        padding: 12px;
    }

    .card-grid,
    .resume-buttons {
        grid-template-columns: 1fr;
    }

    .service-card {
        min-height: 250px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .button {
        width: 100%;
    }

    .footer-content {
        flex-direction: column;
    }
}


/* ------------------------------
   Reduced-motion accessibility
------------------------------ */

@media (prefers-reduced-motion: reduce) {

    html {
        scroll-behavior: auto;
    }

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