/**
 * FEST - Base CSS
 * ================
 * CSS-reset, design tokens (variabler), och grundläggande typografi.
 * Denna fil ska inkluderas först i alla HTML-filer.
 */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Primära färger */
    --color-primary: #667eea;
    --color-primary-dark: #5568d3;
    --color-secondary: #764ba2;
    
    /* Status-färger */
    --color-success: #4CAF50;
    --color-success-dark: #45a049;
    --color-warning: #ffb300;
    --color-danger: #f44336;
    --color-danger-dark: #d32f2f;
    --color-info: #2196F3;
    
    /* Neutrala färger */
    --color-white: #ffffff;
    --color-text-muted: #999;
    --color-gray-50: #fafafa;
    --color-gray-100: #f8f9fa;
    --color-gray-200: #f0f0f0;
    --color-gray-300: #e0e0e0;
    --color-gray-400: #ccc;
    --color-gray-500: #999;
    --color-gray-600: #666;
    --color-gray-700: #555;
    --color-gray-800: #444;
    --color-gray-900: #333;
    
    /* Gradienter */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-success: linear-gradient(135deg, var(--color-success) 0%, var(--color-success-dark) 100%);
    
    /* Typografi */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.85rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.1rem;
    --font-size-xl: 1.3rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Font weights */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;
    --spacing-3xl: 30px;
    --spacing-4xl: 40px;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 10px;
    --radius-2xl: 12px;
    --radius-3xl: 16px;
    --radius-full: 50%;
    --radius-pill: 20px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 10px 40px rgba(0, 0, 0, 0.2);
    --shadow-primary: 0 5px 20px rgba(102, 126, 234, 0.4);
    --shadow-success: 0 4px 12px rgba(76, 175, 80, 0.3);
    --shadow-danger: 0 4px 12px rgba(244, 67, 54, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.4s ease;
    
    /* Z-index layers */
    --z-dropdown: 100;
    --z-sticky: 500;
    --z-modal: 1000;
    --z-toast: 10000;
}

/* ============================================
   CSS Reset
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-900);
    background: var(--color-gray-100);
    min-height: 100vh;
    padding: var(--spacing-xl);
}

/* Default logotyp-storlek så att loggan aldrig renderas i naturlig (enorm)
   storlek under det korta ögonblick innan temat (som annars äger .brand-logo)
   har hunnit appliceras. Teman kan fortfarande överskriva detta. */
.brand-logo {
    height: 38px;
    width: auto;
    display: block;
    flex-shrink: 0;
}

/* Typografi */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    color: var(--color-gray-900);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--spacing-lg);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

/* Lista-reset */
ul, ol {
    list-style: none;
}

/* Bild-reset */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Formulär-reset */
button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

/* Tabell-reset */
table {
    border-collapse: collapse;
    width: 100%;
}

/* ============================================
   Utility Classes
   ============================================ */

/* Text alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Font weights */
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

/* Colors */
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-muted { color: var(--color-gray-500); }

/* Display */
.hidden { display: none !important; }
.show { display: block !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

/* Flex utilities */
.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Gap utilities */
.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* Margin utilities */
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes scaleIn {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse-warning {
    0%, 100% { box-shadow: 0 0 10px rgba(255, 68, 68, 0.5); }
    50% { box-shadow: 0 0 20px rgba(255, 68, 68, 0.8); }
}

.animate-fadeIn {
    animation: fadeIn var(--transition-slow) ease-in;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* ============================================
   Accessibility
   ============================================ */

/* Skip link - synlig endast vid fokus */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: 8px 16px;
    z-index: 10000;
    text-decoration: none;
    font-weight: 500;
    border-radius: 0 0 var(--border-radius) 0;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}

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

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

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

/* ============================================
   Auth Bar
   ============================================ */
.auth-bar {
    position: sticky;
    top: 0;
    z-index: var(--z-toast);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.85);
    pointer-events: auto;
}

.auth-bar-email {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 250px;
    opacity: 0.8;
}



.auth-bar-logout {
    display: inline-flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.85);
    background: rgba(255, 255, 255, 0.15);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: var(--font-size-xs);
    text-decoration: none;
    transition: background var(--transition-fast);
    pointer-events: auto;
}

.auth-bar-logout:hover {
    background: rgba(255, 255, 255, 0.3);
    color: var(--color-white);
}