/* Reset i podstawowe style */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #111827;
    --gray: #6b7280;
    --light: #f3f4f6;
    --white: #ffffff;
    --border: #e5e7eb;
    --shadow: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background: var(--white);
}

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

/* Header & Navigation */
header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    padding: 1rem 0;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.75rem;
    color: var(--dark);
}

.logo h1 span {
    color: var(--primary);
}

.tagline {
    font-size: 0.75rem;
    color: var(--gray);
    margin-top: -5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary);
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-lg, .btn-package, .btn-download, .btn-calculate, .btn-submit {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

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

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

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-warning {
    background: var(--warning);
    color: var(--white);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: 5rem 0;
}

.hero-content {
    text-align: center;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.highlight {
    color: #fbbf24;
    font-weight: bold;
}

.lead {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.95;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 3rem 0;
}

.stat {
    text-align: center;
}

.stat .number {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    color: #fbbf24;
}

.stat .label {
    display: block;
    font-size: 0.875rem;
    opacity: 0.9;
    margin-top: 0.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* Sections */
section {
    padding: 4rem 0;
}

section:nth-child(even) {
    background: var(--light);
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark);
}

.section-subtitle {
    text-align: center;
    color: var(--gray);
    margin-bottom: 3rem;
    font-size: 1.125rem;
}

/* Packages */
.package-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.package-card {
    background: var(--white);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border: 2px solid transparent;
}

.package-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.package-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-align: center;
}

.package-card h3 {
    color: var(--dark);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.package-card .target {
    color: var(--gray);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.package-card .features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.package-card .features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.package-card .features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
}

.roi-badge {
    background: #fef3c7;
    color: #92400e;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.price {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 1rem;
}

.btn-package {
    width: 100%;
    background: var(--primary);
    color: var(--white);
}

/* Calculator */
.calculator {
    background: var(--white);
}

.calculator-form {
    max-width: 800px;
    margin: 0 auto;
    background: var(--light);
    padding: 2rem;
    border-radius: 1rem;
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.calc-input label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.calc-input input,
.calc-input select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-size: 1rem;
}

.calc-input small {
    display: block;
    color: var(--gray);
    margin-top: 0.25rem;
    font-size: 0.875rem;
}

.btn-calculate {
    width: 100%;
    background: var(--secondary);
    color: var(--white);
}

.roi-result {
    max-width: 800px;
    margin: 2rem auto 0;
    background: var(--white);
    border: 2px solid var(--secondary);
    border-radius: 1rem;
    padding: 2rem;
}

.roi-result h3 {
    color: var(--secondary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.roi-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.roi-item {
    padding: 1rem;
    background: var(--light);
    border-radius: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.roi-item.highlight {
    background: var(--secondary);
    color: var(--white);
    grid-column: 1 / -1;
    font-size: 1.25rem;
}

.roi-item .value {
    font-weight: bold;
    font-size: 1.25rem;
}

/* Case Studies */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
}

.case-card {
    background: var(--white);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.case-header {
    background: var(--primary);
    color: var(--white);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
}

.case-content {
    padding: 2rem;
}

.case-content h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.case-content ul {
    margin-left: 1.5rem;
}

.case-content blockquote {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--light);
    border-left: 4px solid var(--primary);
    font-style: italic;
}

.case-content cite {
    display: block;
    margin-top: 0.5rem;
    font-style: normal;
    font-weight: 600;
    color: var(--dark);
}

/* Documents */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.doc-card {
    background: var(--white);
    border: 2px solid var(--border);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s;
}

.doc-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.doc-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.doc-card h3 {
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.doc-card p {
    color: var(--gray);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

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

/* DSL Designer */
.dsl-designer {
    background: var(--white);
}

.designer-info {
    max-width: 800px;
    margin: 2rem auto 0;
}

.designer-info ul {
    margin-left: 2rem;
}

/* Forms */
.order-form-content,
.demo-form-content,
.report-form-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.form-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.form-section:last-child {
    border-bottom: none;
}

.form-section h3 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-size: 1rem;
}

.form-group textarea {
    resize: vertical;
}

.radio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.radio-card {
    display: block;
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s;
}

.radio-card:hover {
    border-color: var(--primary);
}

.radio-card input[type="radio"] {
    display: none;
}

.radio-card input[type="radio"]:checked + .radio-content {
    color: var(--primary);
}

.radio-card input[type="radio"]:checked ~ .radio-card {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.radio-content strong {
    display: block;
    margin-bottom: 0.25rem;
}

.radio-content span {
    font-size: 0.875rem;
    color: var(--gray);
}

.checkbox {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.checkbox input[type="checkbox"] {
    margin-right: 0.75rem;
    margin-top: 0.25rem;
}

.checkbox span {
    flex: 1;
}

.checkbox a {
    color: var(--primary);
    text-decoration: underline;
}

.datetime-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1rem;
}

.form-actions {
    text-align: center;
    margin-top: 2rem;
}

.btn-submit {
    background: var(--primary);
    color: var(--white);
    padding: 1rem 3rem;
    font-size: 1.125rem;
}

.form-note {
    margin-top: 1rem;
    color: var(--gray);
    font-size: 0.875rem;
}

/* FAQ */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.faq-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0.5rem;
    border-left: 4px solid var(--primary);
}

.faq-item h3 {
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.faq-item p {
    color: var(--gray);
}

/* Footer */
footer {
    background: var(--dark);
    color: var(--white);
    padding: 3rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h4 {
    margin-bottom: 1rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: var(--white);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .nav-menu {
        display: none;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
    }
    
    .radio-grid {
        grid-template-columns: 1fr;
    }
    
    .roi-grid {
        grid-template-columns: 1fr;
    }
}

/* Success Messages */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* Loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}