:root {
    --color-bg: #f1f5f9;
    --color-bg-light: #ffffff;
    --color-primary: #7c8db5;
    --color-primary-dark: #6778a3;
    --color-secondary: #b8c0ff;
    --color-accent: #7c8db5;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-card-bg: #ffffff;
    --color-card-border: #cbd5e1;
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --shadow-soft: 0 10px 24px rgba(15, 23, 42, 0.08);
    --shadow-glow: 0 0 24px rgba(124, 141, 181, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

.background-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(124, 141, 181, 0.14) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(184, 192, 255, 0.16) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(203, 213, 225, 0.3) 0%, transparent 70%);
}

.hero {
    padding: 80px 20px 60px;
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg-light) 0%, var(--color-bg) 100%);
    border-bottom: 1px solid var(--color-card-border);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(232, 184, 73, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 16px;
    text-shadow: 0 2px 20px rgba(232, 184, 73, 0.3);
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
}

.intro-section {
    margin-bottom: 56px;
}

.intro-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 20px;
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-bg-light), var(--color-card-bg));
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.intro-toggle:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-soft);
}

.intro-toggle-arrow {
    transition: transform 0.25s ease;
}

.intro-toggle.expanded .intro-toggle-arrow {
    transform: rotate(180deg);
}

.intro-expandable {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.45s ease, opacity 0.3s ease, margin-top 0.3s ease;
    margin-top: 0;
}

.intro-expandable.expanded {
    max-height: 5000px;
    opacity: 1;
    margin-top: 14px;
}

.intro-content {
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-md);
    padding: 28px 24px;
}

.intro-content p {
    margin-bottom: 0.9rem;
}

.intro-content .intro-list {
    margin: 0.6rem 0 1rem;
    padding-left: 1.25rem;
}

.intro-content ul.intro-list,
.intro-content ol.intro-list {
    list-style-position: outside;
}

.intro-content .intro-list li {
    margin-bottom: 0.4rem;
    padding-left: 0.2rem;
}

.tgia-resource-note {
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--color-text-muted);
    background: rgba(232, 184, 73, 0.08);
    border-left: 3px solid var(--color-primary);
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    margin: 0 0 1.25rem;
}

.modal-body .tgia-resource-note {
    margin-bottom: 1.5rem;
}

.grade-section {
    margin-bottom: 80px;
}

.section-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 40px;
}

.grade-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    position: relative;
}

#klasy-1-3 .grade-badge {
    background: linear-gradient(135deg, var(--color-secondary), #9ea9e8);
    color: #ffffff;
    box-shadow: 0 6px 18px rgba(124, 141, 181, 0.25);
}

#klasy-4-8 .grade-badge {
    background: linear-gradient(135deg, var(--color-primary), #6778a3);
    color: #ffffff;
    box-shadow: 0 6px 18px rgba(124, 141, 181, 0.25);
}

#pomysly-przekrojowe .grade-badge {
    background: linear-gradient(135deg, #ffffff, var(--color-secondary));
    color: var(--color-primary);
    border: 1px solid var(--color-card-border);
    box-shadow: 0 6px 18px rgba(124, 141, 181, 0.2);
}

#dodaj-pomysl .grade-badge {
    background: linear-gradient(135deg, var(--color-primary), #6778a3);
    color: #ffffff;
    box-shadow: 0 6px 18px rgba(124, 141, 181, 0.25);
}

.form-draft-card {
    max-width: 760px;
    margin: 0 auto;
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    text-align: center;
    box-shadow: var(--shadow-soft);
}

.form-link {
    margin: 12px 0 14px;
}

.form-note {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.section-description {
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-md);
    padding: 32px;
    text-align: center;
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease backwards;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-soft), var(--shadow-glow);
    border-color: var(--color-primary);
}

.card:hover::before {
    opacity: 1;
}

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

.card-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.card h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 20px;
}

.card-button {
    display: inline-block;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #ffffff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.card-button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 16px rgba(232, 184, 73, 0.4);
}

.card-button:active {
    transform: scale(0.98);
}

.subject-card {
    --card-accent: var(--color-primary);
}

.subject-card::before {
    background: linear-gradient(90deg, var(--card-accent), var(--color-primary));
}

.subject-card:hover {
    border-color: var(--card-accent);
}

.subject-card h3 {
    color: var(--card-accent);
}

.card-link {
    display: inline-block;
    padding: 12px 28px;
    background: transparent;
    color: var(--card-accent);
    border: 2px solid var(--card-accent);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.card-link:hover {
    background: var(--card-accent);
    color: #ffffff;
    transform: scale(1.05);
    box-shadow: 0 6px 18px rgba(124, 141, 181, 0.25);
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    max-width: 800px;
    width: 90%;
    max-height: 85vh;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-soft);
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--color-bg);
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--color-accent);
    color: white;
}

.modal-body {
    padding: 48px;
    overflow-y: auto;
    max-height: 85vh;
}

.modal-body h1 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--color-card-border);
}

.modal-body h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin-top: 32px;
    margin-bottom: 16px;
}

.modal-body h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-top: 24px;
    margin-bottom: 12px;
}

.modal-body p {
    color: var(--color-text);
    margin-bottom: 16px;
}

.modal-body ul,
.modal-body ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.modal-body li {
    color: var(--color-text);
    margin-bottom: 8px;
}

.modal-body li::marker {
    color: var(--color-primary);
}

.modal-body strong {
    color: var(--color-primary);
    font-weight: 600;
}

.modal-body em {
    color: var(--color-text-muted);
    font-style: italic;
}

.modal-body code {
    background: var(--color-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.9em;
    color: var(--color-accent);
}

.modal-body pre {
    background: var(--color-bg);
    padding: 20px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin-bottom: 16px;
}

.modal-body blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: 20px;
    margin: 20px 0;
    color: var(--color-text-muted);
    font-style: italic;
}

.modal-body hr {
    border: none;
    height: 1px;
    background: var(--color-card-border);
    margin: 32px 0;
}

.modal-body a {
    color: var(--color-primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

.modal-body a:hover {
    border-bottom-color: var(--color-primary);
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

.loading::after {
    content: '';
    animation: dots 1.5s infinite;
}

@keyframes dots {
    0%, 20% { content: ''; }
    40% { content: '.'; }
    60% { content: '..'; }
    80%, 100% { content: '...'; }
}

.error {
    text-align: center;
    padding: 40px;
    color: var(--color-accent);
}

footer {
    text-align: center;
    padding: 40px 20px;
    border-top: 1px solid var(--color-card-border);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .hero {
        padding: 60px 20px 40px;
    }
    
    .container {
        padding: 40px 16px;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-body {
        padding: 32px 24px;
    }
    
    .modal-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .modal-body h1 {
        font-size: 1.6rem;
    }

    .intro-content {
        padding: 22px 18px;
    }
}

@media print {
    .background-pattern,
    .modal-close,
    .card-button {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .modal-body {
        max-height: none;
    }
}