/* ======================================================
   ADORAZIONE EUCARISTICA - STYLE.CSS v1.0.0
   ======================================================
   Data: 15 Gennaio 2026
   Features: Responsive, Accessibile (WCAG 2.1 AA), PWA-ready
   ====================================================== */

/* ===== VARIABILI CSS ===== */
:root {
    /* Colori primari */
    --color-primary: #667eea;
    --color-primary-dark: #5568d3;
    --color-secondary: #764ba2;
    --color-accent: #4caf50;
    --color-warning: #ff9800;
    --color-error: #f44336;
    
    /* Colori testo */
    --color-text-primary: #333333;
    --color-text-secondary: #666666;
    --color-text-light: #999999;
    --color-text-inverse: #ffffff;
    
    /* Colori sfondo */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f5f7fa;
    --color-bg-tertiary: #e3e8ef;
    
    /* Colori stati */
    --color-success: #4caf50;
    --color-info: #2196f3;
    --color-highlight: #fff9c4;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-xxl: 32px;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-round: 50%;
    
    /* Shadows */
    --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 8px 24px rgba(0, 0, 0, 0.2);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-md: 15px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-xxl: 24px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-toast: 1060;
    --z-tooltip: 1070;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== ACCESSIBILITÀ ===== */

/* Skip link (accessibilità tastiera) */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    padding: var(--spacing-sm) var(--spacing-lg);
    z-index: 100;
    text-decoration: none;
    border-radius: 0 0 var(--radius-md) 0;
    font-weight: 600;
}

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

/* Focus visibile per navigazione tastiera */
*:focus {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

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

/* Riduci animazioni per utenti con preferenza reduced-motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 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-width: 0;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

h1 { font-size: var(--font-size-xxl); }
h2 { font-size: var(--font-size-xl); }
h3 { font-size: var(--font-size-lg); }
h4, h5, h6 { font-size: var(--font-size-md); }

p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

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

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

strong, b {
    font-weight: 600;
}

em, i {
    font-style: italic;
}

/* ===== LAYOUT PRINCIPALE ===== */
#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 100vw;
    overflow-x: hidden;
}

/* Header */
.app-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-text-inverse);
    padding: var(--spacing-lg);
    text-align: center;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-md);
}

.app-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.app-subtitle {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* Menu hamburger toggle */
.menu-toggle {
    position: absolute;
    left: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--color-text-inverse);
    font-size: var(--font-size-xxl);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.menu-toggle:hover,
.menu-toggle:focus {
    background: rgba(255, 255, 255, 0.2);
}

/* Main content area */
.main-content {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* ===== SCHERMATE ===== */
.screen {
    display: none;
    animation: fadeIn var(--transition-medium);
}

.screen.active {
    display: block;
}

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

/* ===== MENU LATERALE ===== */
.side-menu {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100vh;
    background: var(--color-bg-primary);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-modal);
    transition: left var(--transition-medium);
    overflow-y: auto;
}

.side-menu.open {
    left: 0;
}

.menu-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-text-inverse);
    padding: var(--spacing-xl);
    text-align: center;
}

.menu-logo {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
}

.menu-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.menu-items {
    padding: var(--spacing-lg) 0;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: background var(--transition-fast);
    border-left: 4px solid transparent;
}

.menu-item:hover,
.menu-item:focus {
    background: var(--color-bg-secondary);
    border-left-color: var(--color-primary);
}

.menu-item.active {
    background: var(--color-bg-secondary);
    border-left-color: var(--color-primary);
    font-weight: 600;
}

.menu-icon {
    font-size: var(--font-size-xl);
    width: 32px;
    text-align: center;
}

.menu-text {
    flex: 1;
    font-size: var(--font-size-md);
}

/* Overlay */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    animation: fadeIn var(--transition-fast);
}

.overlay.active {
    display: block;
}

/* ===== FOOTER TABS ===== */
.app-footer {
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-bg-tertiary);
    padding: var(--spacing-sm) 0;
    display: flex;
    justify-content: space-around;
    position: sticky;
    bottom: 0;
    z-index: var(--z-sticky);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
}

.footer-tab {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    border: none;
    background: transparent;
    transition: all var(--transition-fast);
    min-height: 60px;
}

.footer-tab:hover,
.footer-tab:focus {
    color: var(--color-primary);
    background: var(--color-bg-secondary);
}

.footer-tab.active {
    color: var(--color-primary);
    font-weight: 600;
}

.footer-icon {
    font-size: var(--font-size-xl);
}

.footer-label {
    font-size: var(--font-size-xs);
}

/* ===== CARDS & LISTS ===== */

/* Location card */
.location-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.location-card:hover,
.location-card:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.location-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
    gap: var(--spacing-md);
}

.location-name {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0;
    flex: 1;
}

.location-distance {
    font-size: var(--font-size-sm);
    color: var(--color-warning);
    background: rgba(255, 152, 0, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-xl);
    white-space: nowrap;
    font-weight: 600;
}

.location-address {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.location-badges {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Badges */
.badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-xs);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.badge.perpetua {
    background: var(--color-success);
    color: var(--color-text-inverse);
}

.badge.orari {
    background: var(--color-info);
    color: var(--color-text-inverse);
}

.badge.silenzio {
    background: #2196f3;
    color: var(--color-text-inverse);
}

.badge.rosario {
    background: #9c27b0;
    color: var(--color-text-inverse);
}

.badge.canti {
    background: #ff9800;
    color: var(--color-text-inverse);
}

.badge.distanza {
    background: rgba(255, 152, 0, 0.15);
    color: var(--color-warning);
}

/* ===== PREGHIERE ===== */

/* Grid preghiere */
.preghiere-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
}

/* Card preghiera */
.preghiera-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.preghiera-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
}

.preghiera-title {
    font-size: var(--font-size-md);
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0;
}

.preghiera-author {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin: 0;
}

.preghiera-duration {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    margin-top: auto;
}

/* Toggle versione preghiera */
.version-toggle {
    background: var(--color-bg-primary);
    padding: var(--spacing-md);
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    border-bottom: 1px solid var(--color-bg-tertiary);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.toggle-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--color-primary);
    background: var(--color-bg-primary);
    color: var(--color-primary);
    border-radius: var(--radius-xl);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.toggle-btn:hover,
.toggle-btn:focus {
    background: var(--color-bg-secondary);
}

.toggle-btn.active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-text-inverse);
    border-color: transparent;
}

/* Selettore giorni */
.day-selector {
    background: var(--color-bg-secondary);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-bg-tertiary);
    transition: all var(--transition-medium);
    overflow: hidden;
    max-height: 200px;
}

.day-selector.hidden {
    max-height: 0;
    padding: 0;
    border: none;
}

.day-selector-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.day-picker {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.day-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border-radius: var(--radius-round);
    font-size: var(--font-size-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.day-btn:hover,
.day-btn:focus {
    transform: scale(1.1);
    background: var(--color-secondary);
}

.day-display {
    flex: 1;
    text-align: center;
    font-size: var(--font-size-xxl);
    font-weight: 700;
    color: var(--color-text-primary);
    padding: var(--spacing-md);
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
}

.version-badge {
    display: inline-block;
    background: var(--color-success);
    color: var(--color-text-inverse);
    padding: 4px var(--spacing-sm);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-left: var(--spacing-sm);
}

/* Contenuto preghiera */
.prayer-content {
    padding: var(--spacing-lg);
    max-height: calc(100vh - 350px);
    overflow-y: auto;
    background: var(--color-bg-primary);
}

.prayer-section {
    margin-bottom: var(--spacing-xl);
}

.prayer-section-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.prayer-text {
    font-size: var(--font-size-md);
    line-height: 1.8;
    color: var(--color-text-primary);
    text-align: justify;
    margin-bottom: var(--spacing-md);
}

.prayer-text.italic {
    font-style: italic;
    color: var(--color-text-secondary);
}

.prayer-highlight {
    background: var(--color-highlight);
    padding: var(--spacing-md);
    border-left: 4px solid #f57f17;
    border-radius: var(--radius-sm);
    margin: var(--spacing-lg) 0;
}

.prayer-highlight-title {
    font-weight: 700;
    color: #f57f17;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.divider {
    height: 1px;
    background: linear-gradient(to right, transparent, var(--color-bg-tertiary), transparent);
    margin: var(--spacing-xl) 0;
}

/* ===== BANNERS & ALERTS ===== */
.info-banner {
    background: #e3f2fd;
    padding: var(--spacing-md);
    border-left: 4px solid var(--color-info);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-sm);
}

.info-banner-text {
    font-size: var(--font-size-sm);
    color: #1976d2;
    line-height: 1.6;
}

.error-message {
    background: #ffebee;
    color: #c62828;
    padding: var(--spacing-md);
    border-left: 4px solid var(--color-error);
    border-radius: var(--radius-sm);
    margin: var(--spacing-lg) 0;
}

/* ===== COOKIE BANNER (GDPR) ===== */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-lg);
    z-index: var(--z-modal);
    display: none;
    flex-direction: column;
    gap: var(--spacing-md);
    border-top: 4px solid var(--color-primary);
}

.cookie-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    line-height: 1.6;
}

.cookie-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    min-height: 44px; /* Touch target accessibilità */
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-text-inverse);
}

.btn-primary:hover,
.btn-primary:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover,
.btn-secondary:focus {
    background: var(--color-bg-secondary);
}

.btn-success {
    background: var(--color-success);
    color: var(--color-text-inverse);
}

.btn-danger {
    background: var(--color-error);
    color: var(--color-text-inverse);
}

/* ===== TOAST NOTIFICATIONS ===== */
.error-toast,
.success-toast {
    position: fixed;
    top: 80px;
    right: -300px;
    max-width: 300px;
    background: var(--color-bg-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-toast);
    transition: right var(--transition-medium);
}

.error-toast {
    border-left: 4px solid var(--color-error);
}

.success-toast {
    border-left: 4px solid var(--color-success);
}

.error-toast.show,
.success-toast.show {
    right: var(--spacing-lg);
}

/* ===== LOADING OVERLAY ===== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--color-bg-tertiary);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-round);
    animation: spin 1s linear infinite;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .preghiere-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}

@media (max-width: 480px) {
    .app-title {
        font-size: var(--font-size-lg);
    }
    
    .preghiere-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .location-header {
        flex-direction: column;
    }
    
    .location-distance {
        align-self: flex-start;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .app-header,
    .app-footer,
    .menu-toggle,
    .side-menu,
    .overlay,
    .cookie-banner,
    .version-toggle,
    .day-selector {
        display: none !important;
    }
    
    .prayer-content {
        max-height: none;
        overflow: visible;
    }
}

/* ===== DARK MODE (futuro) ===== */
@media (prefers-color-scheme: dark) {
    /* Implementare dark mode qui se necessario */
}

/* ===== CUSTOM SCROLLBAR ===== */
.prayer-content::-webkit-scrollbar {
    width: 8px;
}

.prayer-content::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

.prayer-content::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: var(--radius-sm);
}

.prayer-content::-webkit-scrollbar-thumb:hover {
    background: var(--color-secondary);
}