/* ============================================================================
   INBUD – Paweł Kula | Main Stylesheet
   ============================================================================ */

/* ============================================================================
   1. CSS VARIABLES & RESET
   ============================================================================ */

:root {
    /* Colors */
    --color-white: #ffffff;
    --color-bg: #f9f9f9;
    --color-text: #1a1a1a;
    --color-text-light: #555555;
    --color-text-lighter: #888888;
    --color-primary: #001f3f;
    --color-primary-dark: #000d1a;
    --color-accent: #ff8c00;
    --color-accent-light: #ffb347;
    --color-border: #e0e0e0;
    --color-border-light: #f0f0f0;
    --color-steel: #7a8a99;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --font-size-h1: 48px;
    --font-size-h2: 36px;
    --font-size-h3: 24px;
    --line-height-base: 1.6;
    --line-height-tight: 1.3;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Shadows */
    --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-light: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    :root {
        --transition-fast: 0ms;
        --transition-normal: 0ms;
        --transition-slow: 0ms;
    }

    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

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

html {
    scroll-behavior: smooth;
}

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

/* ============================================================================
   2. TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
    line-height: var(--line-height-tight);
    font-weight: 600;
    color: var(--color-primary);
}

h1 {
    font-size: var(--font-size-h1);
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: var(--font-size-h2);
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-md);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

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

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

a:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ============================================================================
   3. LAYOUT & CONTAINER
   ============================================================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================================================
   4. HEADER & NAVIGATION
   ============================================================================ */

.main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border-light);
    transition: box-shadow var(--transition-normal);
}

.main-header.scrolled {
    box-shadow: var(--shadow-subtle);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    height: 80px;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: opacity var(--transition-fast);
    flex-shrink: 0;
}

.logo:hover {
    opacity: 0.85;
}

.logo img {
    display: block;
    height: 48px;
    width: auto;
}

.main-nav a.active {
    color: var(--color-accent);
    font-weight: 600;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.main-nav a {
    font-size: var(--font-size-small);
    font-weight: 500;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.main-nav a:hover {
    color: var(--color-accent);
}

.main-nav a:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}

.lang-switcher {
    position: relative;
}

.lang-switcher-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: var(--font-size-small);
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
    font-family: inherit;
}

.lang-switcher-toggle:hover,
.lang-switcher.open .lang-switcher-toggle {
    border-color: var(--color-accent);
    background-color: var(--color-white);
}

.lang-chevron {
    font-size: 10px;
    transition: transform var(--transition-fast);
    line-height: 1;
}

.lang-switcher.open .lang-chevron {
    transform: rotate(180deg);
}

.lang-switcher-menu {
    display: none;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 150px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    box-shadow: var(--shadow-light);
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    z-index: 1100;
    transition: opacity var(--transition-fast);
}

.lang-switcher.open .lang-switcher-menu {
    display: block;
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    padding: 6px 0;
    max-height: 200px;
    overflow: visible;
}

.lang-switcher-menu a {
    display: block;
    padding: 10px 16px;
    font-size: var(--font-size-small);
    font-weight: 500;
    color: var(--color-text);
    white-space: nowrap;
}

.lang-switcher-menu a:hover {
    background-color: var(--color-bg);
    color: var(--color-primary);
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0 var(--spacing-lg);
    list-style: none;
    padding: 0;
}

.partner-grid li {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: var(--font-size-small);
    font-weight: 500;
    color: var(--color-text);
}

.page-content.alt-bg .partner-grid li {
    background-color: var(--color-white);
}

.partner-region {
    margin-top: var(--spacing-xl);
}

.partner-region:first-child {
    margin-top: 0;
}

.cta-button {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-accent);
    color: var(--color-white) !important;
    border-radius: 4px;
    font-weight: 600;
    font-size: var(--font-size-small);
    transition: background-color var(--transition-fast);
}

.cta-button:hover {
    background-color: #e67e00;
    color: var(--color-white) !important;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    gap: 6px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: all var(--transition-normal);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================================================
   5. HERO SECTION
   ============================================================================ */

.hero-section {
    padding: var(--spacing-xxl) var(--spacing-md);
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border-light);
}

.hero-section .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-content h1 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.hero-content > p {
    font-size: var(--font-size-large);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.button {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 4px;
    font-weight: 600;
    font-size: var(--font-size-small);
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

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

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

.button.secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.hero-info-block {
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--color-accent);
    border-radius: 4px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-info-block p {
    font-size: var(--font-size-large);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.hero-info-block p:last-child {
    margin-bottom: 0;
}

/* ============================================================================
   6. SERVICES SECTION
   ============================================================================ */

.services-section {
    padding: var(--spacing-xxl) var(--spacing-md);
    background-color: var(--color-white);
}

.services-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeIn 0.8s ease-out;
}

.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.card {
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    transition: all var(--transition-normal);
    animation: fadeIn 0.8s ease-out;
}

.card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-light);
    transform: translateY(-4px);
}

.card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-h3);
}

.card p {
    color: var(--color-text-light);
    font-size: var(--font-size-small);
    margin-bottom: 0;
}

/* ============================================================================
   7. EXPERIENCE SECTION
   ============================================================================ */

.experience-section {
    padding: var(--spacing-xxl) var(--spacing-md);
    background-color: var(--color-bg);
}

.experience-section h2 {
    margin-bottom: var(--spacing-lg);
    animation: fadeIn 0.8s ease-out;
}

.experience-section p {
    font-size: var(--font-size-large);
    color: var(--color-text-light);
    line-height: 1.8;
    max-width: 900px;
    animation: fadeIn 0.8s ease-out 0.2s both;
}

/* ============================================================================
   8. PROCESS SECTION
   ============================================================================ */

.process-section {
    padding: var(--spacing-xxl) var(--spacing-md);
    background-color: var(--color-white);
}

.process-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeIn 0.8s ease-out;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.step {
    padding: var(--spacing-lg);
    text-align: center;
    animation: fadeIn 0.8s ease-out;
}

.step h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-h3);
}

.step p {
    color: var(--color-text-light);
    font-size: var(--font-size-small);
}

/* ============================================================================
   9. CONTACT CTA SECTION
   ============================================================================ */

.contact-cta-section {
    padding: var(--spacing-xxl) var(--spacing-md);
    background-color: var(--color-primary);
    color: var(--color-white);
    text-align: center;
}

.contact-cta-section h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    animation: fadeIn 0.8s ease-out;
}

.contact-cta-section > .container > p:first-of-type {
    font-size: var(--font-size-large);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeIn 0.8s ease-out 0.2s both;
}

.contact-cta-section .button {
    margin-bottom: var(--spacing-lg);
    animation: fadeIn 0.8s ease-out 0.3s both;
}

.contact-email {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-small);
    margin: 0;
}

/* ============================================================================
   10. FOOTER
   ============================================================================ */

.main-footer {
    background-color: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-xl) var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.main-footer .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.footer-info p {
    font-size: var(--font-size-small);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-sm);
}

.footer-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-small);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--color-accent);
}

/* ============================================================================
   11. ANIMATIONS
   ============================================================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================================================
   12. RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 768px) {
    :root {
        --font-size-h1: 36px;
        --font-size-h2: 28px;
        --font-size-h3: 20px;
        --spacing-xxl: 48px;
        --spacing-xl: 32px;
    }

    .main-header .container {
        height: 70px;
        padding: var(--spacing-sm);
    }

    .logo img {
        height: 40px;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        flex-direction: column;
        gap: 0;
        border-bottom: 1px solid var(--color-border-light);
        box-shadow: var(--shadow-light);
        animation: slideDown 0.3s ease-out;
    }

    .main-nav.active {
        display: flex;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }

    .main-nav ul li {
        border-bottom: 1px solid var(--color-border-light);
    }

    .main-nav ul li a {
        display: block;
        padding: var(--spacing-md);
    }

    .main-nav .cta-button {
        margin: var(--spacing-md);
        width: calc(100% - 2 * var(--spacing-md));
    }

    .lang-switcher {
        width: 100%;
        padding: 0 var(--spacing-md);
    }

    .lang-switcher-toggle {
        width: 100%;
        justify-content: space-between;
    }

    .lang-switcher-menu {
        position: static;
        box-shadow: none;
        width: 100%;
    }

    .lang-switcher:not(.open) .lang-switcher-menu {
        display: none;
        visibility: hidden;
        opacity: 0;
        max-height: 0;
        padding: 0;
        margin: 0;
        border: none;
        overflow: hidden;
    }

    .lang-switcher.open .lang-switcher-menu {
        border-top: 1px solid var(--color-border-light);
        margin-top: 4px;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero-section .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .button {
        width: 100%;
    }

    .hero-info-block {
        order: -1;
    }

    .service-cards {
        grid-template-columns: 1fr;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .main-footer .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-nav ul {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-h1: 28px;
        --font-size-h2: 22px;
        --font-size-h3: 18px;
        --spacing-xxl: 32px;
        --spacing-xl: 24px;
        --spacing-lg: 16px;
    }

    .main-header .container {
        height: 60px;
    }

    .logo img {
        height: 32px;
    }

    .hero-content h1 {
        font-size: 24px;
    }

    .hero-content > p {
        font-size: 16px;
    }

    .hero-buttons {
        gap: var(--spacing-sm);
    }

    .button {
        padding: 12px 24px;
        font-size: 14px;
    }

    .hero-info-block {
        padding: var(--spacing-md);
    }

    .hero-info-block p {
        font-size: 16px;
    }

    .contact-cta-section > .container > p:first-of-type {
        font-size: 16px;
    }
}

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

/* ============================================================================
   13. SUBPAGE STYLES
   ============================================================================ */

.page-hero {
    padding: var(--spacing-xxl) var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
}

.page-hero h1 {
    margin-bottom: var(--spacing-md);
    max-width: 800px;
}

.page-hero .lead {
    font-size: var(--font-size-large);
    color: var(--color-text-light);
    max-width: 720px;
    margin-bottom: 0;
    line-height: 1.7;
}

.page-content {
    padding: var(--spacing-xxl) var(--spacing-md);
    background-color: var(--color-white);
}

.page-content.alt-bg {
    background-color: var(--color-bg);
}

.content-block {
    max-width: 900px;
}

.content-block h2 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-h3);
}

.content-block h2:first-child {
    margin-top: 0;
}

.content-block p {
    font-size: var(--font-size-large);
    line-height: 1.8;
}

.content-block ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    color: var(--color-text-light);
}

.content-block li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.section-link {
    margin-top: var(--spacing-lg);
    margin-bottom: 0;
    text-align: center;
}

.section-link a {
    font-weight: 600;
    color: var(--color-primary);
}

.section-link a:hover {
    color: var(--color-accent);
}

.full-service-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    list-style: none;
    padding: 0;
    margin: 0;
}

.full-service-list li {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition-normal);
}

.full-service-list li:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-subtle);
}

.page-content.alt-bg .full-service-list li {
    background-color: var(--color-white);
}

.countries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.country-card {
    padding: var(--spacing-lg);
    text-align: center;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 6px;
}

.country-card strong {
    display: block;
    font-size: var(--font-size-h3);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.country-card span {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
}

.legal-note {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-bg);
    border-left: 4px solid var(--color-steel);
    border-radius: 4px;
    font-size: var(--font-size-small);
    color: var(--color-text-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    max-width: 900px;
}

.contact-card {
    padding: var(--spacing-lg);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
}

.contact-card h2 {
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-md);
}

.contact-card p,
.contact-card address {
    font-style: normal;
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

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

.contact-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-lighter);
    margin-bottom: 4px;
}

.text-muted {
    color: var(--color-text-lighter);
}

.main-footer a {
    color: rgba(255, 255, 255, 0.8);
}

.main-footer a:hover {
    color: var(--color-accent);
}

@media (max-width: 768px) {
    .page-hero {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .full-service-list {
        grid-template-columns: 1fr;
    }
}

/* Preview mode banner (authenticated users on production) */
.site-preview-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-white);
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-bottom: 2px solid var(--color-accent);
}

.site-preview-banner__text {
    opacity: 0.95;
}

.site-preview-banner__actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.site-preview-banner__link {
    color: var(--color-accent-light);
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
}

.site-preview-banner__link--admin {
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(255, 140, 0, 0.25);
    color: var(--color-white);
}

.site-preview-banner__link:hover {
    color: var(--color-white);
}

.site-preview-banner__link--admin:hover {
    background: rgba(255, 140, 0, 0.4);
}