/* Import globalnej czcionki dla całego serwisu */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700;900&display=swap');

/* Global Reset & Base Styles */
:root {
    --brand-color: #2c5282;
    --accent-color: #3b82f6; 
    --text-light: #f7fafc;
    --text-dark: #1a202c;
    --text-muted: #6b7280;
    --background-color: #f3f4f6;
    --container-bg: #ffffff;
    --border-color-shared: #e5e7eb;
    --error-color: #dc2626;
    --success-color: #16a34a;
    --container-padding: 2rem;
    --gap-width: 2rem;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: var(--background-color);
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
}

/* --- SHARED COMPONENTS & LAYOUT --- */

.main-nav {
    background-color: var(--brand-color);
    color: var(--text-light);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    box-shadow: var(--shadow-md);
}
.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
    text-decoration: none;
}
.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    margin-left: 1.5rem;
    transition: opacity 0.2s;
}
.nav-links a:hover { opacity: 0.8; }

.main-footer {
    background-color: var(--border-color-shared);
    color: var(--text-muted);
    text-align: center;
    padding: 2rem 1rem;
    margin-top: auto;
    font-size: 0.9rem;
}
.main-footer a {
    color: var(--brand-color);
    text-decoration: none;
}
.main-footer a:hover { text-decoration: underline; }

.content-wrapper {
    flex-grow: 1;
    width: 100%;
}

.main-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap-width);
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    align-items: flex-start;
}

.calculator-content {
    flex: 2;
    background: var(--container-bg);
    padding: var(--container-padding);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color-shared);
    min-width: 300px;
}

.sidebar {
    flex: 1;
    min-width: 250px;
    position: sticky;
    top: 2rem;
}

.ad-placeholder {
    background: var(--container-bg);
    border: 1px solid var(--border-color-shared);
    box-shadow: var(--shadow-lg);
    width: 250px;
    max-width: 100%; /* Usprawnienie responsywności */
    height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--text-muted);
    border-radius: 12px;
    font-family: monospace;
    margin: 0 auto;
}

.content-box {
    margin-top: 1.5rem;
    padding: 1.5rem;
    border: 1px solid var(--border-color-shared);
    border-radius: 8px;
    background-color: #f9fafb;
}

.content-box-accent {
    color: var(--text-light);
    background-color: var(--brand-color);
}
.content-box-accent h3 {
    color: var(--text-light);
}

/* --- SHARED CALCULATOR STYLES --- */

.calculator-header {
    text-align: center;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color-shared);
    padding-bottom: 1.5rem;
}

.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.calculate-btn {
    flex-grow: 1; /* Zmienione z width: 100% dla lepszego działania w flexbox */
    color: white;
    padding: 1rem;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
    box-shadow: var(--shadow-sm);
    background-color: var(--accent-color);
}
.calculate-btn:hover {
    filter: brightness(1.1);
}

.reset-btn {
    flex-grow: 0; /* Zapobiega rozciąganiu */
    flex-shrink: 0; 
    width: auto; /* Kluczowa zmiana: szerokość dopasowana do zawartości */
    background-color: #e5e7eb;
    color: var(--text-dark);
    border: 1px solid #d1d5db;
    padding: 0 1.5rem;
}
.reset-btn:hover {
    background-color: #d1d5db;
}

/* --- GLOBAL FORM STYLES --- */
.form-group {
    margin-bottom: 1.25rem;
    position: relative; /* Potrzebne dla pozycjonowania błędu */
}
.form-group label {
    display: block;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}
.form-group input[type="number"],
.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-shadow: var(--shadow-sm);
    background-color: var(--container-bg);
    font-family: inherit;
}
.form-group input[type="number"]:focus,
.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.form-status-message {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    text-align: center;
    display: none;
}
.form-status-message.success {
    display: block;
    background-color: #dcfce7;
    color: var(--success-color);
    border: 1px solid var(--success-color);
}
.form-status-message.error {
    display: block;
    background-color: #fee2e2;
    color: var(--error-color);
    border: 1px solid var(--error-color);
}


.calculator-options {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
}
.options-box {
    background-color: #f9fafb;
    padding: 1rem;
    border-radius: 6px;
    cursor: pointer;
}

/* --- INLINE VALIDATION STYLES --- */
.form-group input.invalid {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.2);
}
.error-message {
    color: var(--error-color);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: none; /* Domyślnie ukryty */
}
.error-message.visible {
    display: block; /* Pokazujemy gdy jest błąd */
}


/* --- SEO Content & FAQ Styles (Shared) --- */
.seo-content {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color-shared);
}
.seo-content h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}
.seo-content h3 {
    font-size: 1.4rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}
.seo-content p, .seo-content li {
    line-height: 1.7;
    margin-bottom: 1rem;
}
.seo-content ul {
    list-style-position: inside;
    padding-left: 1rem;
}
.seo-content hr {
    margin: 2rem 0;
    border: 0;
    border-top: 1px solid var(--border-color-shared);
}
.seo-content a {
    color: var(--accent-color);
    font-weight: bold;
    text-decoration: none;
}
.seo-content a:hover {
    text-decoration: underline;
}

.faq-item {
    margin-bottom: 1rem;
}
.faq-item summary {
    font-weight: 700;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}
.faq-item summary:hover {
    background-color: #f0f0f0;
}
.faq-item p {
    padding: 1rem;
    background-color: #f9f9f9;
    border-left: 3px solid var(--accent-color);
    margin-top: 0.5rem;
}

/* --- UTILITY & NEW FEATURES --- */

/* Efekt podświetlenia wyników */
.result-flash {
    animation: flash 0.7s ease-out;
}
@keyframes flash {
    0% { background-color: var(--container-bg); }
    50% { background-color: #dbeafe; } /* Jasnoniebieski akcent */
    100% { background-color: var(--container-bg); }
}

.result-container-copyable {
    position: relative;
    padding-right: 48px;
}

.copy-btn {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    background-color: #e5e7eb;
    border: 1px solid #d1d5db;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #4b5563;
    transition: background-color 0.2s, color 0.2s;
    z-index: 2;
}
.copy-btn:hover {
    background-color: #d1d5db;
    color: #1f2937;
}
.copy-btn svg {
    width: 16px;
    height: 16px;
    pointer-events: none;
}

.copy-feedback {
    position: absolute;
    top: 50%;
    right: calc(1rem + 40px);
    transform: translateY(-50%);
    background-color: var(--brand-color);
    color: var(--text-light);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    pointer-events: none;
    z-index: 3;
}
.copy-feedback.visible {
    opacity: 1;
}


/* Responsive adjustments */
@media (max-width: 900px) {
    .main-container {
        flex-direction: column;
    }
    .sidebar {
       position: static;
       width: 100%;
       display: flex;
       justify-content: center;
    }
}
@media (max-width: 600px) {
    .main-nav {
        flex-direction: column;
        gap: 1rem;
    }
    .nav-links a {
        margin: 0 0.5rem;
    }
}

/* --- Tooltip Styles --- */
.tooltip-container {
    position: relative;
    display: inline-block;
    margin-left: 0.5rem;
}
.tooltip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: #e0e0e0;
    color: #616161;
    font-weight: bold;
    font-size: 12px;
    cursor: help;
    user-select: none;
}
.tooltip-text {
    visibility: hidden;
    width: 250px;
    background-color: var(--text-dark);
    color: var(--text-light);
    text-align: center;
    padding: 8px;
    border-radius: 6px;
    position: absolute;
    z-index: 10;
    bottom: 135%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
    font-weight: normal;
    font-size: 0.85rem;
    line-height: 1.4;
}
.tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--text-dark) transparent transparent transparent;
}
.tooltip-container:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* --- Blog Styles --- */
.blog-list {
    list-style-type: none;
}
.blog-post-item {
    background: var(--container-bg);
    border: 1px solid var(--border-color-shared);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s, box-shadow 0.2s;
}
.blog-post-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}
.blog-post-item h2 {
    margin-top: 0;
}
.blog-post-item h2 a {
    text-decoration: none;
    color: var(--brand-color);
}
.blog-post-item .post-meta {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}
.blog-post-item .post-excerpt {
    margin-bottom: 1rem;
}
.blog-post-item .read-more {
    display: inline-block;
    font-weight: bold;
    color: var(--accent-color);
    text-decoration: none;
}
.affiliate-link-inline {
    color: var(--accent-color);
    font-weight: bold;
    text-decoration: none;
    border-bottom: 1px dotted var(--accent-color);
    transition: border-bottom 0.2s;
}
.affiliate-link-inline:hover {
    text-decoration: none;
    border-bottom: 1px solid var(--accent-color);
}

/* --- Nowe style afiliacyjne --- */
.affiliate-section.hidden {
    display: none;
}
.material-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}
.material-card {
    border: 1px solid var(--border-color-shared);
    border-radius: 8px;
    background-color: var(--container-bg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.material-card h3 {
    font-size: 1.1rem;
    padding: 0.75rem 1rem;
    background-color: #f9fafb;
    border-bottom: 1px solid var(--border-color-shared);
    margin: 0;
}
.affiliate-links {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex-grow: 1;
}
.affiliate-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: 6px;
    text-decoration: none;
    color: var(--text-dark);
    transition: background-color 0.2s;
}
.affiliate-link:hover {
    background-color: #f3f4f6;
}
.affiliate-link img {
    height: 24px;
    width: auto;
    object-fit: contain;
}

/* --- Modal Styles --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    background: var(--container-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
    position: relative;
    text-align: center;
    transform: scale(1);
    transition: transform 0.3s ease-in-out;
}

.modal-overlay.hidden .modal-content {
    transform: scale(0.95);
}

.modal-content h2 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--brand-color);
}

.modal-content p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.modal-close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 2rem;
    line-height: 1;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s;
}

.modal-close-btn:hover {
    color: var(--text-dark);
}

.support-button-container {
    margin-top: 1rem;
}