/* === RESET & BASE === */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

/* === TYPOGRAPHY SYSTEM === */
body { 
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    line-height: 1.6; 
    background: #fafbfc; 
    color: #1a202c; 
    min-height: 100vh; 
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
button, input, select, textarea { font-family: inherit; }

/* === COLOR PALETTE === */
:root {
    --font-sans: 'Inter', sans-serif;
    --primary: #1E88E5;           /* brand blue */
    --primary-light: #64B5F6;
    --primary-dark: #1565C0;
    --secondary: #16A34A;        /* brand green */
    --secondary-light: #22C55E;
    --accent: #FF6F00;           /* brand orange */
    --success: #22C55E;
    --warning: #F59E0B;
    --error: #EF4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --radius: 8px;
    --radius-lg: 12px;
    --primary-soft: #f1f9fe;      /* soft blue */
    --secondary-soft: #ebf5eb;    /* soft green */
    --accent-soft: #FFF3E0;       /* soft orange */
    --success-soft: #f0fdf4;
    --error-soft: #fef2f2;
    --accent-dark: #E65100;
    --success-dark: #166534;
    --error-dark: #7F1D1D;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
}

/* === LAYOUT === */
.container { 
    max-width: 1024px; 
    margin: 0 auto; 
    background: var(--white); 
    box-shadow: var(--shadow);
    min-height: 100vh; 
}

/* === BREADCRUMB NAVIGATION === */
.breadcrumb {
    background: var(--white);
    padding: var(--spacing-md) var(--spacing-xl);
    border-bottom: 1px solid var(--gray-200);
    font-size: 0.875rem;
    color: var(--gray-600);
}

.breadcrumb-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item:not(:last-child)::after {
    content: '>>';
    margin-left: var(--spacing-sm);
    color: var(--gray-400);
    font-weight: 400;
}

.breadcrumb-link {
    color: var(--primary);
    text-decoration: underline;
    transition: color 0.2s ease;
}

.breadcrumb-link:hover {
    color: var(--primary-dark);
}

.breadcrumb-current {
    color: var(--gray-800);
    font-weight: 500;
}

/* === HEADER UPDATE === */
.header {
    background: var(--white); 
    color: var(--gray-900); 
    padding: var(--spacing-2xl) var(--spacing-xl); 
    text-align: center; 
    margin-top: 0; /* Usuń margines górny */
}

.header h1 { 
    font-size: 2.5rem; 
    font-weight: 700; 
    margin-bottom: var(--spacing-sm); 
    letter-spacing: -0.025em;
}

.subtitle { 
    font-size: 1.125rem; 
    color: var(--gray-600); 
    font-weight: 400; 
    font-family: var(--font-sans);
}

.nav-menu { 
    background: var(--white); 
    padding: 0; 
    position: sticky; 
    top: 0; 
    z-index: 100; 
    border-bottom: 1px solid var(--gray-200);
    border-top: 1px solid var(--gray-200);
    backdrop-filter: blur(10px);
}

.nav-menu ul {
    padding: 0px;
    margin: 0px;
}

.nav-list { 
    display: flex; 
    list-style: none; 
    margin: 0; 
    padding: 0 var(--spacing-xl); 
    overflow-x: auto; 
}

.nav-item a { 
    display: block; 
    padding: var(--spacing-md) var(--spacing-lg); 
    color: var(--gray-600); 
    text-decoration: none !important; 
    transition: all 0.2s ease; 
    font-weight: 500; 
    font-size: 0.875rem; 
    white-space: nowrap; 
    border-bottom: 2px solid transparent;
}

.nav-item a:hover { 
    color: var(--primary-dark); 
    border-bottom-color: var(--primary-dark);
}

.nav-item a.active { 
    color: var(--primary-dark); 
    border-bottom-color: var(--primary-dark); 
}



.section { 
    margin-bottom: var(--spacing-2xl); 
}

.section-title { 
    color: var(--gray-900); 
    font-size: 1.875rem; 
    font-weight: 700; 
    margin-bottom: var(--spacing-xl); 
    display: flex; 
    align-items: center; 
    gap: var(--spacing-md); 
    letter-spacing: -0.025em;
    font-family: var(--font-sans);
}

.section-icon { 
    width: 40px; 
    height: 40px; 
    background: var(--primary-soft); 
    border: 1px solid var(--primary-light); 
    border-radius: 10px; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    color: var(--primary-dark); 
    font-size: 1.125rem; 
    font-weight: 700; 
}

/* === COMPONENT SYSTEM === */

/* Card Base */
.card { 
    background: var(--white); 
    border: 1px solid var(--gray-200); 
    border-radius: var(--radius-lg); 
    box-shadow: var(--shadow-sm);
    margin: var(--spacing-lg) 0; 
    overflow: hidden;
}

.card-header { 
    padding: var(--spacing-md) var(--spacing-lg); 
    font-weight: 600; 
    font-size: 0.875rem; 
    text-transform: uppercase; 
    letter-spacing: 0.05em; 
    display: flex; 
    align-items: center; 
    gap: var(--spacing-sm); 
}

.card-content { 
    padding: var(--spacing-lg); 
}

/* Focus & Active States */
a:focus-visible, button:focus-visible, input:focus-visible { 
    outline: 3px solid var(--primary); 
    outline-offset: 2px; 
    border-radius: 6px; 
}

/* Skip link */
.skip-link {
    position: absolute; 
    left: 16px; 
    top: -40px;
    background: var(--primary); 
    color: var(--white); 
    padding: 8px 12px; 
    border-radius: var(--radius); 
    z-index: 1000;
}
.skip-link:focus { top: 16px; }

/* Professional Boxes (normalized names) */
.box-definition, .box-example, .box-important, .box-note {
    background-color: var(--secondary-soft);
    border-left: 5px solid var(--secondary);
    display: block;
    border-radius: 4px 8px 8px 4px;
    border-top: none;
    border-bottom: none;
    border-right: none;
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    orphans: 3;
}

.box-example {
    background-color: var(--primary-soft);
    border-left-color: var(--primary-dark);
}

.box-important {
    background-color: var(--accent-soft);
    border-left-color: var(--accent-dark);
}

.box-note {
    background-color: var(--primary-soft);
    border-left-color: var(--primary);
}

.box-legend {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0 0 var(--spacing-sm) 0;
    padding: 0;
    break-inside: avoid-page !important;
    page-break-inside: avoid !important;
    text-align: left !important;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: 0.005em;
}

h3.box-legend {
    font-size: 1rem !important;
    margin: 0;
}

/* Color accents per box type */
.box-definition .box-legend { color: var(--secondary); }
.box-example .box-legend { color: var(--primary-dark); }
.box-important .box-legend { color: var(--accent-dark); }
.box-note .box-legend { color: var(--primary-dark); }

.quote { 
    background: var(--primary-soft); 
    border-left: 4px solid var(--primary); 
    color: var(--primary-dark); 
    padding: var(--spacing-lg); 
    margin: var(--spacing-lg) 0; 
    font-style: italic; 
    border-radius: 0 var(--radius) var(--radius) 0; 
    font-size: 1.125rem;
}

/* Character Grid */
.characters-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); 
    gap: var(--spacing-lg); 
    margin: var(--spacing-lg) 0; 
}

.character-card { 
    background: var(--white); 
    border: 1px solid var(--gray-200); 
    border-radius: var(--radius-lg); 
    padding: var(--spacing-lg); 
    transition: all 0.2s ease; 
    box-shadow: var(--shadow-sm);
}

.character-card:hover { 
    box-shadow: var(--shadow-md); 
    transform: translateY(-2px); 
    border-color: var(--gray-300);
}

.character-name { 
    color: var(--error); 
    font-size: 1.25rem; 
    margin-bottom: var(--spacing-sm); 
    font-weight: 600; 
    font-family: var(--font-sans);
}

.character-details {
    margin: 0;
    padding-left: 20px;
}

/* Legacy support - redirected to new box system */

/* Q&A Box - simplified */
.q-and-a-box { 
    background: transparent; 
    border: none; 
    padding: 0; 
    margin: var(--spacing-lg) 0; 
}

.q-and-a-box h3 { 
    margin-bottom: var(--spacing-sm); 
    font-weight: 600; 
    color: var(--gray-900); 
    font-family: var(--font-sans);
}

.q-and-a-item { 
    background: transparent; 
    border: none; 
    padding: var(--spacing-sm) 0; 
    margin: var(--spacing-xs) 0; 
}

/* Q&A collapsible styles */

/* Checklist list styling */
.checklist-list { 
    list-style: none; 
    padding: 0; 
    margin: 0; 
}
.checklist-list li { 
    display: flex; 
    align-items: flex-start; 
    gap: 8px; 
    padding: 4px 0; 
    margin: 8px 0;
    padding-left: 10px;
}
.checklist-list input[type="checkbox"] { 
    width: 16px; 
    height: 16px; 
    margin-top: 2px; 
    accent-color: var(--secondary); 
}
.checklist-list label { 
    display: inline-flex; 
    align-items: flex-start; 
    gap: 8px; 
}

/* Q&A controls */
.qa-toggle {
    background: var(--primary-soft);
    color: var(--primary-dark);
    border: 1px solid var(--primary-light);
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
}
.qa-toggle:hover { filter: brightness(0.98); }

.qa-list { margin: 4px 0; }
.qa-item { margin: 6px 0; }
.qa-summary { 
    cursor: pointer; 
    list-style: none; 
    display: flex; 
    align-items: center; 
    gap: 8px; 
    padding: 6px 0; 
    font-weight: 600; 
    color: #1e40af; 
    font-family: var(--font-sans);
}
.qa-summary::-webkit-details-marker { display: none; }
.qa-caret { 
    transition: transform 0.2s ease; 
    display: inline-block; 
}
details[open] > .qa-summary .qa-caret { 
    transform: rotate(90deg); 
}
.qa-answer { 
    margin: 6px 0 8px 24px; 
}
.qa-question {
    color: var(--gray-900);
    margin: 0 0 10px 0;
    font-weight: bold;
}
.qa-answer {
    margin: 0;
    color: var(--gray-700);
}

/* Typography */
p { 
    margin-bottom: var(--spacing-md); 
    line-height: 1.7; 
    color: var(--gray-700);
    font-family: var(--font-sans);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--gray-900);
    font-weight: 600;
    line-height: 1.4;
    font-family: var(--font-sans);
}

/* Mathematical content */
.math-content { 
    font-family: var(--font-sans); 
    font-size: 1.125rem; 
    line-height: 1.8; 
    color: var(--gray-800);
}

/* Subsection title */
.subsection-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-800);
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    letter-spacing: -0.01em;
    font-family: var(--font-sans);
}

.box-definition p, .box-example p, .box-important p, .box-note p {
    margin-bottom: var(--spacing-sm);
    color: var(--gray-800);
}

/* Enhanced list styling within boxes */
.box-definition ul, .box-example ul, .box-important ul, .box-note ul {
    margin: var(--spacing-sm) 0;
}

.box-definition li, .box-example li, .box-important li, .box-note li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
    /* Dodaj style inline z wygenerowana_strona.html */
    padding: 4px 0 4px 0px;
    position: relative;
}

/* List items with data-icon styling (from wygenerowana_strona.html) */
.box-definition li[data-icon], .box-example li[data-icon], .box-important li[data-icon], .box-note li[data-icon] {
    padding: 4px 0 4px 20px;
    position: relative;
}

.box-definition li[data-icon]::before, .box-example li[data-icon]::before, 
.box-important li[data-icon]::before, .box-note li[data-icon]::before {
    content: attr(data-icon);
    position: absolute;
    left: 0;
    color: #2c5e36;
    font-weight: 700;
}

/* Specific icon colors */
.box-definition li[data-icon="•"]::before { color: #2c5e36; }
.box-example li[data-icon="✓"]::before { color: #22C55E; }

/* Dodaj style dla span elementów z ikonami (jak w wygenerowana_strona.html) */
.box-definition li span, .box-example li span, .box-important li span, .box-note li span {
    position: absolute;
    left: 0;
    color: #2c5e36;
    font-weight: 700;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container { 
        margin: 0; 
    }
    .content { 
        padding: var(--spacing-lg) var(--spacing-md); 
    }
    .header { 
        padding: var(--spacing-xl) var(--spacing-md); 
    }
    .header h1 { 
        font-size: 2rem; 
    }
    .nav-list { 
        padding: 0 var(--spacing-md); 
    }
    .characters-grid { 
        grid-template-columns: 1fr; 
    }
    .section-title {
        font-size: 1.5rem;
    }
    
    /* Breadcrumb mobile */
    .breadcrumb {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.75rem;
    }
    
    .breadcrumb-list {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .breadcrumb-item:not(:last-child)::after {
        margin-left: var(--spacing-xs);
    }
}

/* === PRINT STYLES === */
@media print {
    body { color: #000; background: #fff; }
    
    .breadcrumb {
        display: none !important;
    }
    
    .nav-menu, .section-icon { 
        display: none !important; 
    }
    
    .container, .content { 
        box-shadow: none !important; 
        padding: 0 !important; 
        margin: 0 !important;
    }
    
    a { color: #000; text-decoration: none; }
    
    .header {
        padding: var(--spacing-lg) 0 !important;
    }
    
    .card, .q-and-a-box, .quote { 
        border-color: #000 !important; 
        box-shadow: none !important; 
    }
    
    .box-definition, .box-example, .box-important, .box-note {
        background-color: #f9f9f9 !important;
        border-left: 3px solid #000 !important;
        break-inside: avoid !important;
        page-break-inside: avoid !important;
    }
    
    .box-legend {
        break-inside: avoid !important;
        page-break-inside: avoid !important;
    }
    
    .characters-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: var(--spacing-md) !important;
    }
}