/**
 * QMS Global Styles
 * Sistema unificato di stili per tutte le pagine QMS
 * @version 1.0.0
 */

/* ========================================
   VARIABILI GLOBALI
   ======================================== */
:root {
    /* Colori Primari */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    
    /* Colori Semantici */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #dc2626;
    --info-color: #3b82f6;
    
    /* Colori Neutri */
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    
    /* Ombre */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.2);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.3);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    
    /* Font Sizes */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 2rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --text-color: #f3f4f6;
        --text-muted: #9ca3af;
        --border-color: #374151;
        --bg-light: #1f2937;
        --bg-white: #374151;
    }
}

body.dark-mode {
    --text-color: #f3f4f6;
    --text-muted: #9ca3af;
    --border-color: #374151;
    --bg-light: #1f2937;
    --bg-white: #374151;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--primary-gradient);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   NAVBAR GLOBALE
   ======================================== */
.qms-navbar-global {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.qms-navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.qms-navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: transform var(--transition-base);
}

.qms-navbar-brand:hover {
    transform: scale(1.05);
}

.qms-navbar-links {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex: 1;
    justify-content: center;
}

.qms-nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--text-color);
    text-decoration: none;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.qms-nav-link:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: rgba(102, 126, 234, 0.2);
}

.qms-nav-link.active {
    background: var(--primary-gradient);
    color: white;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.qms-navbar-user {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.qms-user-name {
    font-size: var(--font-sm);
    color: var(--text-muted);
}

.qms-btn-logout {
    padding: 8px 16px;
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.qms-btn-logout:hover {
    background: #b91c1c;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Mobile Menu Toggle */
.qms-mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: var(--space-sm);
}

/* ========================================
   BREADCRUMB
   ======================================== */
.qms-breadcrumb {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin: var(--space-lg) auto;
    max-width: 1400px;
}

.qms-breadcrumb-list {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    list-style: none;
}

.qms-breadcrumb-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.qms-breadcrumb-link {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity var(--transition-base);
}

.qms-breadcrumb-link:hover {
    opacity: 1;
    text-decoration: underline;
}

.qms-breadcrumb-current {
    color: white;
    font-weight: 600;
}

.qms-breadcrumb-separator {
    color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

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

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

.btn-primary:hover {
    background: #5568d3;
}

.btn-secondary {
    background: #6b7280;
    color: white;
}

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

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: var(--font-sm);
}

.btn-lg {
    padding: 14px 28px;
    font-size: var(--font-lg);
}

/* ========================================
   CARDS
   ======================================== */
.qms-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.qms-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.qms-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--border-color);
}

.qms-card-title {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--text-color);
}

.qms-card-body {
    color: var(--text-muted);
}

/* ========================================
   MODALS
   ======================================== */
.qms-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.qms-modal {
    background: white;
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideUp var(--transition-base);
}

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

.qms-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.qms-modal-close {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-muted);
    transition: color var(--transition-base);
}

.qms-modal-close:hover {
    color: var(--danger-color);
}

.qms-modal-body {
    padding: var(--space-lg);
}

/* ========================================
   LOADING STATES
   ======================================== */
.qms-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
}

.qms-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(102, 126, 234, 0.2);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.qms-loading-text {
    margin-top: var(--space-md);
    color: var(--text-muted);
}

/* ========================================
   EMPTY STATES
   ======================================== */
.qms-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
}

.qms-empty-icon {
    font-size: 64px;
    margin-bottom: var(--space-lg);
    opacity: 0.5;
}

.qms-empty-title {
    font-size: var(--font-xl);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-color);
}

.qms-empty-description {
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

/* ========================================
   NOTIFICATIONS
   ======================================== */
.qms-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    z-index: 10000;
    animation: slideInRight var(--transition-base);
    max-width: 400px;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.qms-notification.fade-out {
    animation: fadeOut var(--transition-base);
}

@keyframes fadeOut {
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

.qms-notification-icon {
    font-size: 24px;
}

.qms-notification.success { border-left: 4px solid var(--success-color); }
.qms-notification.warning { border-left: 4px solid var(--warning-color); }
.qms-notification.danger { border-left: 4px solid var(--danger-color); }
.qms-notification.info { border-left: 4px solid var(--info-color); }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    .qms-mobile-menu-toggle {
        display: block;
    }
    
    .qms-navbar-links {
        position: fixed;
        top: 64px;
        left: -100%;
        width: 80%;
        height: calc(100vh - 64px);
        background: white;
        flex-direction: column;
        align-items: stretch;
        padding: var(--space-lg);
        transition: left var(--transition-base);
        box-shadow: var(--shadow-lg);
    }
    
    .qms-navbar-links.open {
        left: 0;
    }
    
    .qms-nav-link {
        padding: var(--space-md);
        font-size: var(--font-base);
    }
    
    .qms-notification {
        left: 20px;
        right: 20px;
        max-width: none;
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.hidden { display: none !important; }
.visible { display: block !important; }