/* ==========================================================================
   DAST – Arkusz stylów głównych (100% Self-Hosted, WCAG 2.1 AA, Bulma Ext)
   ========================================================================== */

/* 1. Lokalne fonty */
@font-face {
    font-family: 'InterLocal';
    src: url('../fonts/Inter-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'InterLocal';
    src: url('../fonts/Inter-Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'InterLocal';
    src: url('../fonts/Inter-SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'InterLocal';
    src: url('../fonts/Inter-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* 2. Zmienne kolorów dopasowane do logo DAST */
:root {
    --dast-blue: #1D9FD8;
    --dast-red: #D9271E;
    --dast-orange: #F3961E;
    --dast-green: #39B54A;

    --color-bg-page: #FFFFFF;
    --color-bg-nav: #F4F6F9;
    --color-bg-subtle: #F9FAFB;
    --color-text-main: #111827;
    --color-text-muted: #4B5563;
    --color-border-light: #E5E7EB;
    --color-focus: #1D9FD8;

    --radius-sm: 6px;
    --radius-md: 10px;
    --transition-smooth: 0.28s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* 3. Ustawienia bazowe i dostępność (WCAG 2.1 AA) */
html {
    scroll-behavior: smooth;
    background-color: var(--color-bg-page);
}

body {
    font-family: 'InterLocal', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--color-text-main);
    background-color: var(--color-bg-page);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

[v-cloak] {
    display: none;
}

/* Fokus dla nawigacji klawiaturą */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
}

/* Link pomijający nawigację (Skip to content) */
.skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    z-index: 9999;
    background-color: #000000;
    color: #FFFFFF;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: top 0.2s ease;
}

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

/* 4. Belka nawigacyjna: logo i menu */
.site-header {
    background-color: #FFFFFF;
    border-bottom: 1px solid var(--color-border-light);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 82px;
    padding: 12px 0;
}

.brand-link {
    display: inline-flex;
    align-items: center;
    background: transparent;
    padding: 4px 0;
}

/* Tło pod menu nawigacyjnym - wyłączenie */
.main-nav {
    background-color: var(--color-bg-nav);
    padding: 6px 10px;
    border-radius: var(--radius-md);
    border: 1px solid #E5E9F0;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    display: inline-block;
    padding: 8px 16px;
    color: var(--color-text-main);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

.nav-link:hover {
    background-color: #FFFFFF;
    color: #000000;
}

.nav-link.is-active {
    background-color: #FFFFFF;
    color: #000000;
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

/* Przycisk menu mobilnego */
.mobile-menu-toggle {
    display: none;
    background: var(--color-bg-nav);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    padding: 10px;
    cursor: pointer;
}

.hamburger-box {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 24px;
}

.hamburger-line {
    display: block;
    height: 2px;
    width: 100%;
    background-color: #000000;
}

/* 5. Slider */
.hero-banner-slider {
    position: relative;
    width: 100%;
    height: 520px;
    overflow: hidden;
    background-color: #F4F6F9;
    border-bottom: 1px solid var(--color-border-light);
}

.hero-slides-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.65s ease-in-out, visibility 0.65s ease-in-out;
    display: flex;
    align-items: center;
}

.hero-slide.is-active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.hero-slide-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center right;
    z-index: 1;
}

/* Jasny gradient od lewej strony */
.hero-slide-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.96) 0%,
        rgba(255, 255, 255, 0.88) 42%,
        rgba(255, 255, 255, 0.25) 75%,
        rgba(255, 255, 255, 0.05) 100%
    );
    z-index: 2;
}

.hero-slide-container {
    position: relative;
    z-index: 3;
    width: 100%;
}

.hero-slide-content {
    max-width: 620px;
    padding: 0 24px;
}

.hero-slide-period {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: 10px;
    letter-spacing: 0.03em;
}

.hero-slide-title {
    font-size: clamp(2rem, 3.6vw, 3rem);
    font-weight: 700;
    line-height: 1.18;
    color: #000000;
    margin-bottom: 16px;
}

.hero-slide-subtitle {
    font-size: 1.05rem;
    color: #1F2937;
    margin-bottom: 26px;
    max-width: 520px;
}

/* Strzałki po bokach bannera */
.hero-side-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.78);
    color: #111827;
    font-size: 1.8rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

.hero-side-arrow:hover {
    background-color: #FFFFFF;
    color: #000000;
}

.hero-side-arrow.is-prev {
    left: 18px;
}

.hero-side-arrow.is-next {
    right: 18px;
}

/* Kropki paginacji na dole bannera */
.hero-bottom-dots {
    position: absolute;
    bottom: 22px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    display: flex;
    gap: 10px;
}

.hero-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    border: 1.5px solid #111827;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 0;
    cursor: pointer;
    transition: background-color var(--transition-smooth), transform var(--transition-smooth);
}

.hero-dot.is-active {
    background-color: #111827;
    transform: scale(1.2);
}

@media screen and (max-width: 768px) {
    .hero-banner-slider {
        height: 440px;
    }

    .hero-slide-overlay {
        background: rgba(255, 255, 255, 0.9);
    }

    .hero-slide-content {
        padding: 0 46px;
    }

    .hero-side-arrow {
        width: 36px;
        height: 36px;
        font-size: 1.4rem;
    }

    .hero-side-arrow.is-prev {
        left: 8px;
    }

    .hero-side-arrow.is-next {
        right: 8px;
    }
}

/* 6. Wspólne elementy sekcji i przyciski */
.dast-section {
    padding: 72px 1.5rem;
}

.section-kicker {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: #000000;
    margin-bottom: 14px;
}

.section-subtitle,
.section-text {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    max-width: 720px;
}

.section-header {
    margin-bottom: 42px;
}

.dast-btn-outline {
    background-color: #FFFFFF;
    color: #000000;
    border: 1.5px solid #000000;
    border-radius: var(--radius-sm);
    font-weight: 600;
    padding: 0.65rem 1.35rem;
    height: auto;
    transition: background-color var(--transition-smooth), color var(--transition-smooth), transform var(--transition-smooth);
}

.dast-btn-outline:hover {
    background-color: #000000;
    color: #FFFFFF;
    transform: translateY(-1px);
}

.dast-btn-primary {
    background-color: #000000;
    color: #FFFFFF;
    border: 1.5px solid #000000;
    border-radius: var(--radius-sm);
    font-weight: 600;
    padding: 0.75rem 1.6rem;
    height: auto;
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.dast-btn-primary:hover {
    color: #FFFFFF;
    opacity: 0.88;
    transform: translateY(-1px);
}

.icon-arrow {
    margin-left: 8px;
    transition: transform var(--transition-smooth);
}

.dast-btn-outline:hover .icon-arrow {
    transform: translateX(4px);
}

/* 7. Sekcja O nas */
.about-metrics {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.metric-item {
    background-color: #FFFFFF;
    border: 1px solid var(--color-border-light);
    border-left-width: 4px;
    border-radius: var(--radius-sm);
    padding: 18px 22px;
}

.metric-value {
    display: block;
    font-size: 1.65rem;
    font-weight: 700;
    color: #000000;
    line-height: 1.2;
}

.metric-label {
    font-size: 0.92rem;
    color: var(--color-text-muted);
}

/* 8. Sekcja Oferta */
.offer-card {
    background-color: #FFFFFF;
    border: 2px solid var(--card-border-color, #E5E7EB);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    height: 100%;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.offer-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(17, 24, 39, 0.07);
}

.offer-card-icon {
    width: 42px;
    height: 42px;
    margin-bottom: 18px;
    color: #111827;
}

.offer-card-icon svg {
    width: 34px;
    height: 34px;
    stroke: currentColor;
}

.offer-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #000000;
    margin-bottom: 10px;
}

.offer-card-desc {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* 9. Partnerzy – logotypy + linki do Case Study */
.partner-tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #FFFFFF;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 28px 20px 20px;
    min-height: 164px;
    text-decoration: none;
    transition: border-color var(--transition-smooth), transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.partner-tile img {
    width: auto;
    height: auto;
    max-height: 76px;
    max-width: 85%;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.85;
    transition: filter var(--transition-smooth), opacity var(--transition-smooth), transform var(--transition-smooth);
}

.partner-tile-badge {
    margin-top: 16px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text-muted);
    transition: color var(--transition-smooth);
}

.partner-tile:hover {
    border-color: #111827;
    transform: translateY(-3px);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.05);
}

.partner-tile:hover img {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.03);
}

.partner-tile:hover .partner-tile-badge {
    color: #000000;
}

/* 10. Kontakt i formularz */
.contact-details {
    font-style: normal;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border-light);
}

.contact-company {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.contact-row {
    margin-bottom: 8px;
    font-size: 1rem;
}

.contact-label {
    color: var(--color-text-muted);
    margin-right: 6px;
}

.contact-link {
    color: #000000;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.contact-link:hover {
    color: var(--dast-blue);
}

.contact-form-box {
    background-color: #FFFFFF;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 32px;
}

.dast-input {
    border-color: #D1D5DB;
    border-radius: var(--radius-sm);
    box-shadow: none;
}

.dast-input:focus {
    border-color: #000000;
    box-shadow: none;
}

/* 11. Stopka */
.site-footer {
    background-color: var(--color-bg-subtle);
    border-top: 1px solid var(--color-border-light);
    padding: 36px 1.5rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-brand {
    color: #000000;
    margin-bottom: 4px;
}

.footer-meta {
    margin-bottom: 6px;
}

.footer-meta a {
    color: var(--color-text-main);
    text-decoration: underline;
}

.footer-copy {
    font-size: 0.85rem;
}

.footer-nav {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 18px;
}

.footer-nav a {
    color: var(--color-text-main);
    font-weight: 500;
    text-decoration: none;
}

.footer-nav a:hover {
    text-decoration: underline;
}

/* 12. Animacje wejścia (Intersection Observer) */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* 13. Responsywność (Mobile / Tablet) */
@media screen and (max-width: 768px) {
    .mobile-menu-toggle {
        display: inline-flex;
    }

    .header-inner {
        flex-wrap: wrap;
    }

    .main-nav {
        display: none;
        width: 100%;
        margin-top: 14px;
    }

    .main-nav.is-open {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-link {
        width: 100%;
    }

    .slide-visual img {
        height: 220px;
    }

    .contact-form-box {
        padding: 22px;
    }
}

/* 14. Preferencja ograniczonego ruchu (WCAG) */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .slide-item,
    .offer-card,
    .partner-tile,
    .reveal-on-scroll,
    .dast-btn-outline,
    .dast-btn-primary {
        transition: none !important;
        transform: none !important;
    }

    .reveal-on-scroll {
        opacity: 1 !important;
    }
}