/* ===================================
   IT Blokada - Landing Page Styles
   =================================== */

/* CSS Variables for Theming */
:root {
    /* Colors */
    --color-primary: #d62828;
    --color-primary-dark: #9d0208;
    --color-primary-light: #f77f00;
    --color-text: #1a1a1a;
    --color-text-secondary: #4a4a4a;
    --color-text-light: #6a6a6a;
    --color-background: #ffffff;
    --color-background-alt: #f8f9fa;
    --color-border: #e0e0e0;

    /* Typography */
    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    --font-size-4xl: 3rem;
    --line-height-base: 1.6;
    --line-height-tight: 1.2;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 8px;
    --border-radius-sm: 4px;
    --border-radius-lg: 12px;

    /* Transitions */
    --transition-base: 0.2s ease-in-out;
    --transition-slow: 0.3s ease-in-out;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
}

/* Reset & Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Focus Styles for Accessibility */
:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* Header */
.site-header {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-background);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-mark {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    object-fit: contain;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

/* Language Toggle */
.lang-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: none;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.lang-toggle:hover {
    border-color: var(--color-primary);
    background-color: var(--color-background-alt);
}

.lang-option {
    transition: color var(--transition-base);
}

.lang-option.active {
    color: var(--color-primary);
}

.lang-separator {
    color: var(--color-border);
    user-select: none;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    padding: var(--spacing-2xl) 0;
    position: relative;
    background-image: url('itb-logo.png');
    background-repeat: no-repeat;
    background-position: center center;
    background-size: contain;
    background-attachment: fixed;
}

.main-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.85);
    pointer-events: none;
}

/* Hero Section */
.hero {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    animation: fadeIn 0.8s ease-in-out;
    position: relative;
    z-index: 1;
}

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

.headline {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: var(--line-height-tight);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.03em;
}

@media (max-width: 768px) {
    .headline {
        font-size: var(--font-size-3xl);
    }
}

.tagline {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.4;
}

@media (max-width: 768px) {
    .tagline {
        font-size: var(--font-size-lg);
    }
}

.summary {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

/* CTA Group */
.cta-group {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

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

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

.btn-primary:active {
    transform: translateY(0);
}

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

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

/* Social Links */
.social-links {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.social-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.social-icons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    color: var(--color-text-secondary);
    background-color: var(--color-background-alt);
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
}

.social-link:hover {
    color: var(--color-primary);
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.social-link svg {
    width: 24px;
    height: 24px;
}

/* Footer */
.site-footer {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-background-alt);
}

.footer-text {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-align: center;
}

.footer-separator {
    color: var(--color-border);
}

.footer-text a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

/* Utility Classes */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Responsive Background Adjustments */
@media (max-width: 768px) {
    .main-content {
        background-size: cover;
        background-attachment: scroll;
    }

    .main-content::before {
        background-color: rgba(255, 255, 255, 0.9);
    }
}

/* Print Styles */
@media print {
    .lang-toggle,
    .social-links {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .btn {
        border: 1px solid black;
    }

    .main-content {
        background-image: none;
    }
}