/* ====================================================
   bio.css - Bio Krajewski (ikreacja.pl/bio)
   Design System v1.2 - Warm Graphite Multi-Tone
   Patrz: bio/design-system/MASTER.md
   ==================================================== */
:root {
    /* Tła sekcji */
    --cream-light: #FAF7F2;
    --cream-mid: #EDE6DA;
    --ink-dark: #1C1917;
    --ink-darker: #0A0908;

    /* Tekst na jasnym tle */
    --text-on-light: #1A1614;
    --text-on-light-muted: #57534E;
    --text-on-light-subtle: #78716C;

    /* Tekst na ciemnym tle */
    --text-on-dark: #F5EFE3;
    --text-on-dark-muted: #C4BCA9;
    --text-on-dark-subtle: #8C8474;

    /* Akcenty */
    --accent: #B45309;
    --accent-light: #D4A574;
    --accent-hover: #92400E;

    /* Granice */
    --border-light: #E7DFD0;
    --border-dark: #332E28;

    /* Fonty */
    --font-heading: 'Bricolage Grotesque', system-ui, -apple-system, sans-serif;
    --font-body: 'Host Grotesk', system-ui, -apple-system, sans-serif;

    /* Kontenery */
    --container-narrow: 720px;
    --container-medium: 960px;
    --container-wide: 1200px;

    --pad-mobile: 24px;
    --pad-tablet: 48px;
    --pad-desktop: 80px;

    --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--cream-light);
    color: var(--text-on-light);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: 'ss01' on, 'ss02' on;
}

@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;
    }
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 var(--pad-mobile);
}
@media (min-width: 768px)  { .container { padding: 0 var(--pad-tablet); } }
@media (min-width: 1024px) { .container { padding: 0 var(--pad-desktop); } }

.container--narrow { max-width: var(--container-narrow); }
.container--medium { max-width: var(--container-medium); }

/* ===== Typography ===== */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 500;
    line-height: 1.15;
    font-variation-settings: 'opsz' 60, 'wdth' 100;
}
h1 {
    font-size: clamp(3rem, 8vw, 5.5rem);
    line-height: 1.02;
    letter-spacing: -0.025em;
    font-variation-settings: 'opsz' 96, 'wdth' 95;
}
h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1.5rem;
    letter-spacing: -0.015em;
    font-variation-settings: 'opsz' 60, 'wdth' 100;
}
h3 {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.25;
    font-variation-settings: 'opsz' 24, 'wdth' 100;
}
em { font-style: italic; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

a {
    color: inherit;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 4px;
    transition: color 200ms var(--ease), text-decoration-color 200ms var(--ease);
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 2px; }

.meta {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ===== Theme: light section ===== */
.theme-light { background: var(--cream-light); color: var(--text-on-light); }
.theme-light a { text-decoration-color: var(--border-light); }
.theme-light a:hover { color: var(--accent); text-decoration-color: var(--accent); }
.theme-light .meta { color: var(--text-on-light-subtle); }
.theme-light .text-secondary { color: var(--text-on-light-muted); }

/* ===== Theme: mid section ===== */
.theme-mid { background: var(--cream-mid); color: var(--text-on-light); }
.theme-mid a { text-decoration-color: rgba(26, 22, 20, 0.2); }
.theme-mid a:hover { color: var(--accent-hover); text-decoration-color: var(--accent-hover); }
.theme-mid .meta { color: var(--text-on-light-muted); }
.theme-mid .text-secondary { color: var(--text-on-light-muted); }

/* ===== Theme: dark section ===== */
.theme-dark { background: var(--ink-dark); color: var(--text-on-dark); }
.theme-dark a { text-decoration-color: var(--border-dark); }
.theme-dark a:hover { color: var(--accent-light); text-decoration-color: var(--accent-light); }
.theme-dark .meta { color: var(--text-on-dark-subtle); }
.theme-dark .text-secondary { color: var(--text-on-dark-muted); }

/* ===== Nav ===== */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 50;
    background: rgba(250, 247, 242, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: box-shadow 250ms var(--ease), background 250ms var(--ease);
}
.nav.scrolled {
    box-shadow: 0 1px 0 var(--border-light);
    background: rgba(250, 247, 242, 0.95);
}
.nav__inner {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px var(--pad-mobile);
    max-width: var(--container-wide); margin: 0 auto;
}
@media (min-width: 768px)  { .nav__inner { padding-left: var(--pad-tablet); padding-right: var(--pad-tablet); } }
@media (min-width: 1024px) { .nav__inner { padding-left: var(--pad-desktop); padding-right: var(--pad-desktop); } }

.nav__brand {
    font-family: var(--font-heading); font-size: 1.5rem; font-weight: 600;
    text-decoration: none; color: var(--text-on-light); letter-spacing: -0.02em;
    font-variation-settings: 'opsz' 24, 'wdth' 95;
}
.nav__links { display: none; gap: 32px; align-items: center; }
@media (min-width: 768px) { .nav__links { display: flex; } }
.nav__links a {
    font-size: 0.875rem; text-decoration: none; color: var(--text-on-light-muted);
    font-weight: 400;
}
.nav__links a:hover { color: var(--accent); }
.nav__lang {
    display: flex; gap: 8px; align-items: center;
    font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em;
}
.nav__lang button {
    background: none; border: none; cursor: pointer;
    font-family: var(--font-body); font-size: inherit; letter-spacing: inherit;
    color: var(--text-on-light-subtle); padding: 4px 6px;
    transition: color 200ms var(--ease);
}
.nav__lang button.active { color: var(--text-on-light); font-weight: 600; }
.nav__lang button:hover { color: var(--accent); }
.nav__lang span { color: var(--border-light); }

/* ===== Hero ===== */
.hero {
    min-height: 88vh;
    display: flex; align-items: center;
    padding-top: 100px; padding-bottom: 80px;
}
.hero__grid {
    display: grid; gap: 48px;
    grid-template-columns: 1fr;
}
@media (min-width: 1024px) {
    .hero__grid { grid-template-columns: 3fr 2fr; gap: 80px; align-items: center; }
}
.hero__index {
    color: var(--accent); font-family: var(--font-body);
    font-size: 0.8125rem; margin-bottom: 24px;
    text-transform: uppercase; letter-spacing: 0.12em; font-weight: 500;
}
.hero__role {
    font-family: var(--font-body); font-size: 1.375rem; font-weight: 400;
    color: var(--text-on-light-muted); margin: 24px 0 32px;
    line-height: 1.4;
}
.hero__lede { font-size: 1.125rem; max-width: 540px; color: var(--text-on-light-muted); }
.hero__cta {
    margin-top: 40px; display: flex; flex-wrap: wrap; gap: 24px 40px;
    font-size: 0.9375rem;
}
.hero__cta a { display: inline-flex; align-items: center; gap: 10px; color: var(--text-on-light); text-decoration-color: var(--border-light); }
.hero__cta a:hover { color: var(--accent); }

.hero__photo {
    position: relative; max-width: 360px; justify-self: center; width: 100%;
}
.hero__photo img {
    width: 100%; border-radius: 50%; display: block;
    filter: grayscale(8%) contrast(1.02);
}
.hero__photo::after {
    content: ''; position: absolute; inset: -8px;
    border: 1px solid var(--accent); border-radius: 50%;
    transform: translate(12px, 12px); pointer-events: none;
}

/* ===== Section ===== */
.section { padding: 96px 0; }
@media (min-width: 768px) { .section { padding: 128px 0; } }
.section__head { display: grid; grid-template-columns: auto 1fr; gap: 24px; align-items: baseline; margin-bottom: 56px; }
.section__index {
    color: var(--accent); font-family: var(--font-body);
    font-size: 0.8125rem; min-width: 48px; font-weight: 500;
    text-transform: uppercase; letter-spacing: 0.12em;
}
.theme-dark .section__index { color: var(--accent-light); }
.theme-mid .section__index { color: var(--accent-hover); }

/* ===== Manifest ===== */
.manifest p {
    font-family: var(--font-body); font-size: 1.5rem;
    line-height: 1.5; color: var(--text-on-dark);
    font-weight: 400;
    margin-bottom: 1.5rem;
}
.manifest p::before { content: '— '; color: var(--accent-light); }
.manifest p:last-child { margin-bottom: 0; }

/* ===== Timeline ===== */
.timeline { display: grid; gap: 56px; }
.timeline__item {
    display: grid; grid-template-columns: 1fr; gap: 8px;
    padding-left: 24px; border-left: 1px solid var(--border-light);
}
@media (min-width: 768px) {
    .timeline__item { grid-template-columns: 200px 1fr; gap: 32px; padding-left: 0; border-left: none; padding-bottom: 24px; border-bottom: 1px solid var(--border-light); }
    .timeline__item:last-child { border-bottom: none; padding-bottom: 0; }
}
.timeline__year {
    color: var(--accent); font-family: var(--font-heading);
    font-size: 1rem; font-weight: 500;
    font-variation-settings: 'opsz' 18, 'wdth' 95;
    letter-spacing: -0.005em;
}
.timeline__role { font-weight: 600; margin-bottom: 8px; }
.timeline__desc { color: var(--text-on-light-muted); }

/* ===== Case studies ===== */
.case {
    display: grid; gap: 24px; padding-bottom: 56px; margin-bottom: 56px;
    border-bottom: 1px solid rgba(26, 22, 20, 0.12);
}
.case:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
@media (min-width: 768px) {
    .case { grid-template-columns: 5fr 7fr; gap: 56px; align-items: center; }
}
.case__img {
    width: 100%; aspect-ratio: 4 / 3; object-fit: cover;
    filter: grayscale(15%) contrast(1.05);
    transition: filter 300ms var(--ease);
    box-shadow: 0 1px 0 rgba(26, 22, 20, 0.12);
}
.case:hover .case__img { filter: grayscale(0%) contrast(1.08); }
.case__tag { color: var(--text-on-light-muted); margin-bottom: 8px; }
.case__title { margin: 8px 0 16px; transition: color 200ms var(--ease); }
.case:hover .case__title { color: var(--accent-hover); }
.case__client {
    font-family: var(--font-body); font-size: 0.9375rem;
    font-weight: 500; color: var(--accent-hover); margin-bottom: 12px;
}
.case__metrics { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.case__metric {
    font-size: 0.8125rem;
    color: var(--text-on-light-muted);
    padding: 4px 12px;
    border: 1px solid rgba(26, 22, 20, 0.15);
    border-radius: 4px;
    background: rgba(250, 247, 242, 0.6);
}

/* ===== Skills ===== */
.skills__group { margin-bottom: 40px; }
.skills__group:last-child { margin-bottom: 0; }
.skills__label { margin-bottom: 14px; }
.skills__list { display: flex; flex-wrap: wrap; gap: 8px; }
.skills__chip {
    font-size: 0.875rem; padding: 8px 16px;
    border: 1px solid var(--border-light);
    border-radius: 999px;
    color: var(--text-on-light-muted);
    background: var(--cream-light);
    transition: all 200ms var(--ease);
}
.skills__chip:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(180, 83, 9, 0.04);
}

/* ===== Contact ===== */
.contact-grid { display: grid; gap: 64px; grid-template-columns: 1fr; }
@media (min-width: 1024px) { .contact-grid { grid-template-columns: 5fr 7fr; gap: 80px; } }
.contact__intro { font-size: 1.125rem; color: var(--text-on-dark-muted); margin-bottom: 40px; max-width: 480px; }
.contact__list { display: grid; gap: 28px; margin-bottom: 40px; }
.contact__item { display: flex; flex-direction: column; gap: 6px; }
.contact__item a { font-size: 1.125rem; color: var(--text-on-dark); text-decoration-color: var(--border-dark); }
.contact__item a:hover { color: var(--accent-light); text-decoration-color: var(--accent-light); }

.btn-cta {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 28px;
    background: var(--accent-light);
    color: var(--ink-dark);
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    transition: all 200ms var(--ease);
    border: none;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    cursor: pointer;
}
.btn-cta:hover {
    background: var(--text-on-dark);
    color: var(--ink-dark);
}

/* ===== Brevo form (override + restyling do palety dark theme) ===== */
.theme-dark #sib-form-container,
.theme-dark .sib-form-container {
    background: transparent !important;
    width: 100%;
    max-width: 100%;
}
.theme-dark .sib-form {
    text-align: left !important;
    background-color: transparent !important;
}
.theme-dark #sib-container {
    background: transparent !important;
    border: none !important;
    max-width: 100% !important;
    padding: 0 !important;
    text-align: left !important;
}
.theme-dark #sib-form,
.theme-dark .sib-form form {
    width: 100%;
}
.theme-dark .sib-form .form-group,
.theme-dark .sib-form-container .form-group,
.theme-dark #sib-container .form-group {
    width: 100% !important;
    max-width: 100% !important;
    margin-bottom: 20px !important;
    box-sizing: border-box !important;
}
.theme-dark .sib-form .entry__field,
.theme-dark .sib-form-container .entry__field,
.theme-dark #sib-container .entry__field,
.theme-dark #sib-form-container .entry__field {
    width: 100% !important;
    max-width: 100% !important;
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
    box-sizing: border-box !important;
}
.theme-dark .sib-form .entry__label,
.theme-dark .sib-form-container .entry__label,
.theme-dark #sib-container .entry__label,
.theme-dark #sib-form-container .entry__label {
    font-weight: 500 !important;
    text-align: left !important;
    font-size: 0.75rem !important;
    text-transform: uppercase !important;
    letter-spacing: 0.08em !important;
    color: var(--text-on-dark-subtle) !important;
    margin-bottom: 10px !important;
    display: block !important;
    font-family: var(--font-body) !important;
}
.theme-dark .sib-form .input,
.theme-dark .sib-form-container .input,
.theme-dark #sib-container .input,
.theme-dark #sib-form-container .input,
.theme-dark .sib-form input,
.theme-dark .sib-form textarea,
.theme-dark #sib-container input,
.theme-dark #sib-container textarea {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 100% !important;
    padding: 12px 14px !important;
    background: rgba(245, 239, 227, 0.04) !important;
    border: 1px solid var(--border-dark) !important;
    border-radius: 4px !important;
    font-size: 0.9375rem !important;
    color: var(--text-on-dark) !important;
    transition: border-color 200ms var(--ease), background 200ms var(--ease) !important;
    font-family: var(--font-body) !important;
    box-sizing: border-box !important;
    margin: 0 !important;
}
.theme-dark .sib-form input::placeholder,
.theme-dark .sib-form textarea::placeholder,
.theme-dark #sib-container input::placeholder,
.theme-dark #sib-container textarea::placeholder {
    color: var(--text-on-dark-subtle) !important;
    opacity: 1;
}
.theme-dark .sib-form .input:focus,
.theme-dark .sib-form-container .input:focus,
.theme-dark #sib-container .input:focus,
.theme-dark #sib-form-container .input:focus,
.theme-dark .sib-form input:focus,
.theme-dark .sib-form textarea:focus,
.theme-dark #sib-container input:focus,
.theme-dark #sib-container textarea:focus {
    outline: none !important;
    border-color: var(--accent-light) !important;
    background: rgba(245, 239, 227, 0.08) !important;
    box-shadow: none !important;
}
.theme-dark .sib-form-block__button,
.theme-dark #sib-form button[type="submit"] {
    width: 100%;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 10px;
    padding: 14px 28px !important;
    background: var(--accent-light) !important;
    color: var(--ink-dark) !important;
    text-decoration: none !important;
    font-weight: 600 !important;
    border-radius: 4px !important;
    border: none !important;
    cursor: pointer !important;
    font-family: var(--font-body) !important;
    font-size: 0.9375rem !important;
    transition: background 200ms var(--ease) !important;
}
.theme-dark .sib-form-block__button:hover,
.theme-dark #sib-form button[type="submit"]:hover {
    background: var(--text-on-dark) !important;
}
.theme-dark .sib-form-block__button .icon { stroke: var(--ink-dark); }
.theme-dark .sib-form-message-panel {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
}
.theme-dark .sib-form-message-panel.sib-form-message-panel--active {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
}
.theme-dark #success-message,
.theme-dark #error-message {
    opacity: 1 !important;
    visibility: visible !important;
    margin-bottom: 20px !important;
    border-radius: 4px !important;
}
.input--hidden {
    position: absolute !important;
    left: -5000px !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

/* ===== Footer ===== */
.footer {
    padding: 56px 0;
    background: var(--ink-darker);
    color: var(--text-on-dark-muted);
}
.footer__grid { display: grid; gap: 24px; grid-template-columns: 1fr; align-items: center; }
@media (min-width: 768px) { .footer__grid { grid-template-columns: auto 1fr auto; } }
.footer__links {
    display: flex; gap: 24px; flex-wrap: wrap; justify-content: center;
    font-size: 0.875rem;
}
.footer__links a {
    color: var(--text-on-dark-muted);
    text-decoration-color: var(--border-dark);
}
.footer__links a:hover { color: var(--accent-light); text-decoration-color: var(--accent-light); }
.footer__copy { font-size: 0.75rem; color: var(--text-on-dark-subtle); }

/* ===== Icons ===== */
.icon { width: 18px; height: 18px; flex-shrink: 0; stroke: currentColor; }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 600ms var(--ease), transform 600ms var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ===== Language toggle (PL / EN / FR) ===== */
[data-lang="pl"] .lang-en,
[data-lang="pl"] .lang-fr { display: none; }
[data-lang="en"] .lang-pl,
[data-lang="en"] .lang-fr { display: none; }
[data-lang="fr"] .lang-pl,
[data-lang="fr"] .lang-en { display: none; }