/* ==========================================================================
   1. Globalne Ustawienia i Zmienne CSS
   ========================================================================== */

   :root {
    /* Paleta Jasna (Domyślna) */
    --color-background: #F9F9F9;
    --color-surface: #FFFFFF;
    --color-primary: #005A9C;
    --color-primary-deep: #004070;
    --color-secondary: #E87722;
    --color-text-primary: #121212;
    --color-text-secondary: #585858;
    --color-border: #E0E0E0;
    --color-border-interactive: #BDBDBD;
    --color-accent-light: #E3F2FD;
    --color-cta-background: #1A237E;
    --color-cta-text: #FFFFFF;
    --color-footer-background: #1C1C1C;
    --color-footer-text: #A0A0A0;

    /* Typografia */
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-family-serif: 'Lora', serif;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;

    /* Rozmiary i Odstępy */
    --spacing-unit: 8px;
    --container-width: 1240px;
    --container-padding: calc(var(--spacing-unit) * 3);
    --border-radius-small: 4px;
    --border-radius-medium: 8px;
    --border-radius-large: 16px;
    --transition-speed: 0.3s;
    --transition-timing: ease-in-out;
}

/* Paleta Ciemna */
@media (prefers-color-scheme: dark) {
    :root {
        --color-background: #121212;
        --color-surface: #1E1E1E;
        --color-primary: #449AFF;
        --color-primary-deep: #79BBFF;
        --color-secondary: #FF9A4D;
        --color-text-primary: #EAEAEA;
        --color-text-secondary: #A0A0A0;
        --color-border: #333333;
        --color-border-interactive: #555555;
        --color-accent-light: #2A3640;
        --color-cta-background: #627BFF;
        --color-cta-text: #121212;
        --color-footer-background: #000000;
        --color-footer-text: #888888;
    }
}

html[data-theme='dark'] {
    --color-background: #121212;
    --color-surface: #1E1E1E;
    --color-primary: #449AFF;
    --color-primary-deep: #79BBFF;
    --color-secondary: #FF9A4D;
    --color-text-primary: #EAEAEA;
    --color-text-secondary: #A0A0A0;
    --color-border: #333333;
    --color-border-interactive: #555555;
    --color-accent-light: #2A3640;
    --color-cta-background: #627BFF;
    --color-cta-text: #121212;
    --color-footer-background: #000000;
    --color-footer-text: #888888;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-sans);
    background-color: var(--color-background);
    color: var(--color-text-primary);
    line-height: 1.7;
    transition: background-color var(--transition-speed) var(--transition-timing), color var(--transition-speed) var(--transition-timing);
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-timing);
}

a:hover,
a:focus {
    color: var(--color-primary-deep);
    text-decoration: underline;
}

h1, h2, h3 {
    font-family: var(--font-family-serif);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
}

h2 {
    font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
    margin-bottom: calc(var(--spacing-unit) * 4);
    text-align: center;
}

h3 {
    font-size: clamp(1.25rem, 2vw + 0.5rem, 1.75rem);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

p {
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--color-text-secondary);
}

ul, ol {
    padding-left: calc(var(--spacing-unit) * 3);
}

li {
    margin-bottom: var(--spacing-unit);
}

address {
    font-style: normal;
}

/* ==========================================================================
   2. Struktura i Kontenery
   ========================================================================== */

.container {
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

section {
    padding-top: calc(var(--spacing-unit) * 12);
    padding-bottom: calc(var(--spacing-unit) * 12);
}

/* ==========================================================================
   3. Przyciski (Buttons)
   ========================================================================== */

.button-primary,
.button-large,
.button-large-light {
    display: inline-block;
    font-weight: var(--font-weight-bold);
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 2px solid transparent;
    transition: all var(--transition-speed) var(--transition-timing);
    text-decoration: none;
}

.button-primary {
    background-color: var(--color-primary);
    color: #FFFFFF;
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    border-radius: var(--border-radius-small);
}

.button-primary:hover,
.button-primary:focus {
    background-color: var(--color-primary-deep);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 90, 156, 0.2);
    text-decoration: none;
    color: #FFFFFF;
}

.button-large {
    background-color: var(--color-secondary);
    color: #FFFFFF;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 5);
    border-radius: var(--border-radius-medium);
    font-size: 1.1rem;
    box-shadow: 0 4px 20px rgba(232, 119, 34, 0.25);
}

.button-large:hover,
.button-large:focus {
    background-color: #D46A1F;
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(232, 119, 34, 0.35);
    text-decoration: none;
    color: #FFFFFF;
}

.button-large-light {
    background-color: var(--color-cta-text);
    color: var(--color-cta-background);
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 5);
    border-radius: var(--border-radius-medium);
    font-size: 1.1rem;
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.1);
}

.button-large-light:hover,
.button-large-light:focus {
    background-color: #FFFFFF;
    color: var(--color-cta-background);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 6px 25px rgba(255, 255, 255, 0.2);
    text-decoration: none;
}

/* ==========================================================================
   4. Nagłówek (Header)
   ========================================================================== */

header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    background-color: color-mix(in srgb, var(--color-surface) 90%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-speed) var(--transition-timing);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: calc(var(--spacing-unit) * 10);
}

.logo {
    display: flex;
    align-items: center;
    font-weight: var(--font-weight-bold);
    font-size: 1.5rem;
    text-decoration: none;
    color: var(--color-text-primary);
}

.logo svg {
    margin-right: calc(var(--spacing-unit) * 1.5);
    width: 36px;
    height: 36px;
    stroke: var(--color-primary);
}

.logo:hover,
.logo:focus {
    text-decoration: none;
}

header nav ul {
    display: flex;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
}

header nav li {
    margin: 0 calc(var(--spacing-unit) * 2);
}

header nav a {
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-unit) 0;
    position: relative;
}

header nav a:not(.button-primary)::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--transition-speed) var(--transition-timing);
}

header nav a:not(.button-primary):hover::after,
header nav a:not(.button-primary):focus::after {
    transform: scaleX(1);
}

header nav a:hover,
header nav a:focus {
    color: var(--color-text-primary);
    text-decoration: none;
}

/* ==========================================================================
   5. Sekcja Hero
   ========================================================================== */

.hero-section {
    text-align: center;
    padding-top: calc(var(--spacing-unit) * 15);
    padding-bottom: calc(var(--spacing-unit) * 15);
}

.hero-section .container {
    max-width: 900px;
}

.hero-section h1 {
    color: var(--color-text-primary);
}

.hero-section .subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    max-width: 700px;
    margin: calc(var(--spacing-unit) * 3) auto calc(var(--spacing-unit) * 5);
    line-height: 1.8;
}

.hero-image-container {
    margin-top: calc(var(--spacing-unit) * 8);
}

.hero-image-container img {
    border-radius: var(--border-radius-large);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--color-border);
}

/* ==========================================================================
   6. Sekcja Problemu / Cechy (Features)
   ========================================================================== */

.problem-section {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.problem-section p {
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 5);
}

.feature-item {
    text-align: center;
    padding: calc(var(--spacing-unit) * 4);
    background-color: var(--color-background);
    border-radius: var(--border-radius-medium);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-speed) var(--transition-timing), box-shadow var(--transition-speed) var(--transition-timing);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.feature-item svg {
    stroke: var(--color-primary);
    margin-bottom: calc(var(--spacing-unit) * 3);
    width: 40px;
    height: 40px;
}

.feature-item h3 {
    color: var(--color-text-primary);
}

.feature-item p {
    text-align: center;
    max-width: 100%;
    margin-bottom: 0;
}

/* ==========================================================================
   7. Sekcja Rozwiązań (Taby)
   ========================================================================== */

.solutions-section .container {
    max-width: 960px;
}

.solutions-section > .container > p {
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.tabs-container {
    margin-top: calc(var(--spacing-unit) * 6);
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-unit);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: calc(var(--spacing-unit) * 5);
}

.tab-button {
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
    cursor: pointer;
    background-color: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: all var(--transition-speed) var(--transition-timing);
    margin-bottom: -1px;
}

.tab-button:hover {
    color: var(--color-text-primary);
    background-color: var(--color-accent-light);
}

.tab-button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.tab-content.active {
    display: block;
}

.tab-content ul {
    list-style-type: none;
    padding-left: 0;
}

.tab-content li {
    padding-left: calc(var(--spacing-unit) * 4);
    position: relative;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.tab-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 2px;
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    font-size: 1.2rem;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   8. Galeria Szablonów
   ========================================================================== */

.gallery-section {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.gallery-section > .container > p {
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: calc(var(--spacing-unit) * 5);
}

.gallery-item {
    background-color: var(--color-background);
    border-radius: var(--border-radius-medium);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: transform var(--transition-speed) var(--transition-timing), box-shadow var(--transition-speed) var(--transition-timing);
}

.gallery-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.08);
}

.gallery-item img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-bottom: 1px solid var(--color-border);
}

.gallery-item h3,
.gallery-item p {
    padding: 0 calc(var(--spacing-unit) * 3);
}

.gallery-item h3 {
    margin-top: calc(var(--spacing-unit) * 3);
}

.gallery-item p {
    padding-bottom: calc(var(--spacing-unit) * 3);
}

/* ==========================================================================
   9. Sekcja FAQ (Akordeon)
   ========================================================================== */

.faq-section .container {
    max-width: 900px;
}

.faq-section > .container > p {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.accordion {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-unit);
}

.accordion-item {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-medium);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: calc(var(--spacing-unit) * 2.5) calc(var(--spacing-unit) * 3);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background-color: transparent;
    border: none;
    font-size: 1.1rem;
    font-weight: var(--font-weight-medium);
    text-align: left;
    color: var(--color-text-primary);
}

.accordion-header:hover {
    background-color: var(--color-accent-light);
}

.accordion-header svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-text-secondary);
    transition: transform var(--transition-speed) var(--transition-timing);
    flex-shrink: 0;
}

.accordion-item.active .accordion-header svg {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-speed) var(--transition-timing), padding var(--transition-speed) var(--transition-timing);
}

.accordion-content p,
.accordion-content ul {
    padding: 0 calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 3);
    margin-bottom: 0;
}

.accordion-content ul {
    padding-bottom: calc(var(--spacing-unit) * 3);
    padding-left: calc(var(--spacing-unit) * 6);
    list-style-type: disc;
}

.accordion-content p:first-child {
    padding-top: 0;
}

/* ==========================================================================
   10. Sekcja Opinii (Testimonials)
   ========================================================================== */

.testimonials-section {
    background-color: var(--color-accent-light);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
}

.testimonial-item {
    background-color: var(--color-surface);
    padding: calc(var(--spacing-unit) * 4);
    border-radius: var(--border-radius-medium);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
}

.testimonial-item blockquote {
    flex-grow: 1;
    position: relative;
    padding-left: calc(var(--spacing-unit) * 5);
}

.testimonial-item blockquote::before {
    content: '“';
    position: absolute;
    left: 0;
    top: -10px;
    font-size: 4rem;
    color: var(--color-primary);
    opacity: 0.2;
    font-family: var(--font-family-serif);
}

.testimonial-item blockquote p {
    font-style: italic;
    margin-bottom: 0;
}

.testimonial-item footer {
    margin-top: calc(var(--spacing-unit) * 3);
    padding-top: calc(var(--spacing-unit) * 2);
    border-top: 1px solid var(--color-border);
}

.testimonial-item cite {
    display: block;
    font-weight: var(--font-weight-bold);
    font-style: normal;
}

.testimonial-item footer span {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* ==========================================================================
   11. Sekcja CTA
   ========================================================================== */

.cta-section {
    background-color: var(--color-cta-background);
    color: var(--color-cta-text);
    text-align: center;
}

.cta-section h2 {
    color: var(--color-cta-text);
}

.cta-section p {
    color: color-mix(in srgb, var(--color-cta-text) 80%, transparent);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

/* ==========================================================================
   12. Stopka (Footer)
   ========================================================================== */

footer {
    background-color: var(--color-footer-background);
    color: var(--color-footer-text);
    padding-top: calc(var(--spacing-unit) * 10);
    font-size: 0.95rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: calc(var(--spacing-unit) * 5);
    padding-bottom: calc(var(--spacing-unit) * 6);
}

.footer-column .logo {
    color: #FFFFFF;
    font-size: 1.6rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.footer-column .logo svg {
    stroke: var(--color-primary);
}

.footer-column p {
    color: var(--color-footer-text);
    line-height: 1.6;
}

.footer-column h3 {
    color: #FFFFFF;
    font-family: var(--font-family-sans);
    font-size: 1.1rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: calc(var(--spacing-unit) * 2.5);
}

.footer-column ul {
    list-style: none;
    padding: 0;
}

.footer-column li {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

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

.footer-column a:hover,
.footer-column a:focus {
    color: #FFFFFF;
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: calc(var(--spacing-unit) * 3) 0;
    text-align: center;
    color: var(--color-footer-text);
}

/* ==========================================================================
   13. Baner Cookies
   ========================================================================== */

#cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    padding: calc(var(--spacing-unit) * 2);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    z-index: 2000;
    transform: translateY(100%);
    transition: transform 0.5s ease-in-out;
    border-top: 1px solid var(--color-border);
}

#cookie-banner.visible {
    transform: translateY(0);
}

#cookie-banner .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: calc(var(--spacing-unit) * 3);
}

#cookie-banner p {
    margin: 0;
}

#cookie-accept-button {
    flex-shrink: 0;
    padding: var(--spacing-unit) calc(var(--spacing-unit) * 3);
    background-color: var(--color-primary);
    color: #FFFFFF;
    border: none;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    transition: background-color var(--transition-speed) var(--transition-timing);
}

#cookie-accept-button:hover {
    background-color: var(--color-primary-deep);
}

/* ==========================================================================
   14. Animacje i Klasy Pomocnicze
   ========================================================================== */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-title-underline {
    position: relative;
    display: inline-block;
}

.section-title-underline::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--color-secondary);
    border-radius: 2px;
}

/* ==========================================================================
   15. Pasek Przewijania (Scrollbar)
   ========================================================================== */

::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--color-background);
}

::-webkit-scrollbar-thumb {
    background-color: var(--color-border-interactive);
    border-radius: 10px;
    border: 3px solid var(--color-background);
}

::-webkit-scrollbar-thumb:hover {
    background-color: #888;
}

html[data-theme='dark'] ::-webkit-scrollbar-thumb:hover {
    background-color: #777;
}

/* ==========================================================================
   16. Media Queries (Responsywność)
   ========================================================================== */

/* Tablety (do 1024px) */
@media (max-width: 1024px) {
    h1 {
        font-size: clamp(2.2rem, 6vw, 3.5rem);
    }
    h2 {
        font-size: clamp(1.8rem, 5vw, 2.8rem);
    }

    section {
        padding-top: calc(var(--spacing-unit) * 10);
        padding-bottom: calc(var(--spacing-unit) * 10);
    }
}

/* Urządzenia Mobilne (do 768px) */
@media (max-width: 768px) {
    :root {
        --container-padding: calc(var(--spacing-unit) * 2);
    }

    header .container {
        height: auto;
        flex-direction: column;
        padding-top: var(--spacing-unit);
        padding-bottom: var(--spacing-unit);
    }
    
    header {
        position: static;
        backdrop-filter: none;
    }

    header nav ul {
        flex-direction: column;
        width: 100%;
        margin-top: var(--spacing-unit);
    }

    header nav li {
        margin: var(--spacing-unit) 0;
        width: 100%;
        text-align: center;
    }
    
    header nav .button-primary {
        display: block;
        width: 100%;
    }
    
    .hero-section {
        padding-top: calc(var(--spacing-unit) * 8);
        padding-bottom: calc(var(--spacing-unit) * 8);
    }

    .features-grid,
    .gallery-grid,
    .testimonials-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .tab-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .tab-button {
        border-bottom: 1px solid var(--color-border);
    }
    
    .tab-button.active {
        border-bottom: 3px solid var(--color-primary);
    }

    .footer-grid {
        text-align: center;
    }

    .footer-column .logo {
        justify-content: center;
    }

    #cookie-banner .container {
        flex-direction: column;
        text-align: center;
    }
    
    #cookie-accept-button {
        width: 100%;
        margin-top: var(--spacing-unit);
    }
}

/* Bardzo małe urządzenia mobilne (do 480px) */
@media (max-width: 480px) {
    body {
        font-size: 15px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .button-large,
    .button-large-light {
        width: 100%;
        display: block;
    }

    .feature-item,
    .gallery-item,
    .testimonial-item {
        padding: calc(var(--spacing-unit) * 3);
    }
}