/* ============================================
   VYPOVED-PRACE-VZOR.CZ - Stylesheet
   Dark blue (#1e3a8a) + White + Yellow CTA
   Mobile-first responsive design
   ============================================ */

:root {
    --color-primary: #1e3a8a;        /* Dark blue */
    --color-primary-light: #3b82f6;  /* Lighter blue */
    --color-bg: #ffffff;             /* White */
    --color-text: #1f2937;           /* Dark gray */
    --color-text-light: #6b7280;     /* Light gray */
    --color-border: #e5e7eb;         /* Light border */
    --color-cta: #fbbf24;            /* Amber/yellow */
    --color-cta-hover: #f59e0b;      /* Darker amber */
    --color-warning: #fecaca;        /* Light red bg for warnings */
    --color-warning-text: #dc2626;   /* Dark red text */
    --color-example: #f3f4f6;        /* Light gray bg */

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "Monaco", "Courier New", monospace;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    padding: var(--spacing-xl) var(--spacing-sm);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    word-wrap: break-word;
}

.header .lead {
    font-size: 1.125rem;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.5;
}

/* Main */
main {
    padding: var(--spacing-lg) 0;
}

/* Sections */
.section {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-md);
}

.section h2 {
    font-size: 1.75rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.section h3 {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.section p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.section ul,
.section ol {
    margin-left: 2em;
    margin-bottom: var(--spacing-md);
}

.section li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.7;
}

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

/* Blockquote / Example */
.example {
    background: var(--color-example);
    border-left: 4px solid var(--color-cta);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    line-height: 1.6;
}

.example p {
    margin-bottom: var(--spacing-xs);
}

/* Warning Box */
.warning {
    background: var(--color-warning);
    border-left: 4px solid var(--color-warning-text);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: var(--radius-sm);
}

.warning p,
.warning ul {
    margin-bottom: var(--spacing-sm);
}

.warning strong {
    color: var(--color-warning-text);
}

.warning ul {
    margin-left: 1.5em;
}

.warning li {
    margin-bottom: var(--spacing-xs);
}

/* Variants / Templates */
.variants {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

@media (min-width: 768px) {
    .variants {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .variants {
        grid-template-columns: repeat(3, 1fr);
    }
}

.variant {
    background: var(--color-example);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.variant h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.variant-desc {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.template-preview {
    background: white;
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin: var(--spacing-md) 0;
    font-size: 0.9rem;
    line-height: 1.6;
    overflow-x: auto;
}

.template-preview p {
    margin-bottom: var(--spacing-sm);
}

.template-preview em {
    color: var(--color-text-light);
    font-style: italic;
}

.cta-note {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-md);
}

/* CTA Section */
.section--cta {
    border-left-color: var(--color-cta);
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.05) 0%, rgba(30, 58, 138, 0.02) 100%);
}

.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-lg);
    text-align: center;
}

.cta-section p {
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.cta-button {
    display: inline-block;
    background: var(--color-cta);
    color: var(--color-primary);
    padding: 0.75rem 2rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    margin-top: var(--spacing-sm);
    border: 2px solid transparent;
    cursor: pointer;
}

.cta-button:hover {
    background: var(--color-cta-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-button:active {
    transform: translateY(0);
}

/* Links */
a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.link-external::after {
    content: " ↗";
}

/* FAQ Section */
.section--faq {
    border-left-color: var(--color-primary);
}

.faq-item {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.faq-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.faq-q {
    color: var(--color-primary);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.faq-q::before {
    content: "❓ ";
    margin-right: 0.5rem;
}

.faq-a {
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.faq-a:last-child {
    margin-bottom: 0;
}

.faq-a ol,
.faq-a ul {
    margin-left: 2em;
    margin-top: var(--spacing-sm);
}

.faq-a li {
    margin-bottom: var(--spacing-xs);
}

/* Legal Section */
.section--legal {
    background: var(--color-example);
    border-left-color: var(--color-text-light);
    font-size: 0.95rem;
    color: var(--color-text-light);
}

.section--legal p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-lg) var(--spacing-sm);
    text-align: center;
    border-top: 4px solid var(--color-cta);
    margin-top: var(--spacing-xl);
}

.footer p {
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.footer-link {
    color: var(--color-cta);
    font-weight: 600;
}

.footer-link:hover {
    text-decoration: underline;
}

.footer-legal {
    font-size: 0.85rem;
    opacity: 0.85;
    margin-top: var(--spacing-sm);
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

@media (max-width: 768px) {
    .header h1 {
        font-size: 1.5rem;
    }

    .header .lead {
        font-size: 1rem;
    }

    .section {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }

    .section h2 {
        font-size: 1.5rem;
    }

    .section h3 {
        font-size: 1.1rem;
    }

    .variants {
        grid-template-columns: 1fr;
    }

    .template-preview {
        font-size: 0.85rem;
    }

    .cta-button {
        padding: 0.65rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-xs);
    }

    .header {
        padding: var(--spacing-lg) var(--spacing-xs);
        margin-bottom: var(--spacing-lg);
    }

    .header h1 {
        font-size: 1.25rem;
    }

    .header .lead {
        font-size: 0.95rem;
    }

    .section {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    .section h2 {
        font-size: 1.35rem;
    }

    .section h3 {
        font-size: 1rem;
    }

    main {
        padding: var(--spacing-md) 0;
    }

    .example,
    .warning {
        padding: var(--spacing-sm);
    }

    .template-preview {
        padding: var(--spacing-sm);
        font-size: 0.8rem;
    }
}

/* ============================================
   ACCESSIBILITY & PRINT
   ============================================ */

@media print {
    body {
        background: white;
    }

    .header {
        break-after: page;
    }

    a {
        text-decoration: underline;
    }

    .cta-button {
        border: 1px solid var(--color-primary);
        color: var(--color-primary) !important;
        background: white !important;
    }
}

/* Focus states for keyboard navigation */
a:focus,
button:focus,
.cta-button:focus {
    outline: 3px solid var(--color-cta);
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #1f2937;
        --color-text: #f3f4f6;
        --color-text-light: #d1d5db;
        --color-border: #374151;
        --color-example: #374151;
    }

    .template-preview {
        background: #111827;
        border-color: var(--color-border);
    }

    .section {
        background: #2d3748;
    }

    .variant {
        background: #374151;
        border-color: var(--color-border);
    }

    .footer {
        background: #111827;
    }
}