/**
 * UI5 Components CSS
 * 
 * Stiluri pentru componentele UI5 (Header, Footer, Navigation)
 * Folosește variabilele din ui5-variables.css
 */

/* ============================================
   HEADER COMPONENT
   ============================================ */

.ui5-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--header-padding-y) var(--header-padding-x);
    background: rgba(0, 27, 84, 0.25);
    backdrop-filter: var(--backdrop-blur-lg) var(--backdrop-saturate);
    border-bottom: 1px solid rgba(30, 112, 182, 0.3);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    min-height: var(--header-height);
}

.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-center {
    flex: 1;
    text-align: center;
}

.header-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0;
}

.header-icon {
    width: 2.5rem;
    height: 2.5rem;
    min-width: var(--button-min-size);
    min-height: var(--button-min-size);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-slow);
    color: var(--color-text-primary);
    position: relative;
    padding: 0;
}

.header-icon:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.header-icon:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.header-icon svg {
    width: 1.25rem;
    height: 1.25rem;
    stroke: currentColor;
}

.header-icon a {
    text-decoration: none;
    color: inherit;
}

/* Notification Badge */
.notification-badge {
    position: absolute;
    top: -0.25rem;
    right: -0.25rem;
    background: var(--color-error);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    padding: 0.125rem 0.375rem;
    min-width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-menu-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    right: 0;
    background: rgba(0, 27, 84, 0.95);
    backdrop-filter: var(--backdrop-blur-xl) var(--backdrop-saturate);
    border: 1px solid rgba(30, 112, 182, 0.4);
    border-radius: var(--radius-lg);
    min-width: 12rem;
    box-shadow: var(--shadow-xl);
    z-index: var(--z-dropdown);
    overflow: hidden;
}

.user-menu-dropdown.active {
    display: block;
    animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-0.5rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.user-menu-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(30, 112, 182, 0.2);
}

.user-menu-header .user-name {
    display: block;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.user-menu-header .user-email {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.user-menu-divider {
    height: 1px;
    background: rgba(30, 112, 182, 0.2);
    margin: var(--spacing-xs) 0;
}

.user-menu-item,
.user-menu-item-form {
    display: block;
    width: 100%;
}

.user-menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: background-color var(--transition-base);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
}

.user-menu-item:hover {
    background: rgba(30, 112, 182, 0.3);
}

.user-menu-item svg {
    width: 1rem;
    height: 1rem;
    stroke: currentColor;
}

.user-menu-item-danger {
    color: var(--color-error);
}

.user-menu-item-danger:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* Responsive Header */
@media (max-width: 640px) {
    .header-title {
        font-size: var(--font-size-md);
    }
    
    .header-icon {
        width: 2.25rem;
        height: 2.25rem;
    }
    
    .header-icon svg {
        width: 1.125rem;
        height: 1.125rem;
    }
}

/* ============================================
   FOOTER COMPONENT
   ============================================ */

.ui5-footer {
    background: rgba(0, 27, 84, 0.25);
    backdrop-filter: var(--backdrop-blur-lg) var(--backdrop-saturate);
    border-top: 1px solid rgba(30, 112, 182, 0.3);
    padding: var(--footer-padding);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.footer-section h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
}

.footer-section a:hover {
    color: var(--color-primary-light);
}

.footer-section p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin: var(--spacing-xs) 0;
}

/* Responsive Footer */
@media (max-width: 640px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* ============================================
   NAVIGATION COMPONENT
   ============================================ */

/* Sidebar Navigation (Desktop) */
.ui5-navigation-sidebar {
    position: fixed;
    left: 0;
    top: var(--header-height);
    width: var(--nav-sidebar-width);
    height: calc(100vh - var(--header-height));
    background: rgba(0, 27, 84, 0.3);
    backdrop-filter: var(--backdrop-blur-xl) var(--backdrop-saturate);
    border-right: 1px solid rgba(30, 112, 182, 0.3);
    overflow-y: auto;
    z-index: var(--z-base);
    transition: transform var(--transition-slow);
    /* Sidebar colapsat by default */
    transform: translateX(-100%);
}

.ui5-navigation-sidebar.collapsed {
    transform: translateX(-100%);
}

.ui5-navigation-sidebar:not(.collapsed) {
    transform: translateX(0);
}

.nav-menu {
    list-style: none;
    padding: var(--spacing-md);
    margin: 0;
}

.nav-item {
    margin-bottom: var(--spacing-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--color-text-primary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    font-size: var(--font-size-sm);
    min-height: var(--button-min-size);
}

.nav-link:hover {
    background: rgba(30, 112, 182, 0.2);
}

.nav-item.active > .nav-link {
    background: rgba(30, 112, 182, 0.3);
    color: var(--color-primary-light);
}

.nav-icon {
    width: 1.25rem;
    height: 1.25rem;
    stroke: currentColor;
    flex-shrink: 0;
}

.nav-item.has-submenu .nav-link {
    justify-content: space-between;
}

.submenu-toggle {
    width: 1rem;
    height: 1rem;
    transition: transform var(--transition-base);
}

.nav-item.has-submenu.expanded .submenu-toggle {
    transform: rotate(180deg);
}

.submenu {
    list-style: none;
    padding: 0;
    margin: var(--spacing-xs) 0 0 var(--spacing-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), opacity var(--transition-slow);
    opacity: 0;
    visibility: hidden;
}

/* Submenu expanded only on desktop (> 1024px) and only when explicitly expanded */
@media (min-width: 1025px) {
    .nav-item.has-submenu.expanded .submenu {
        max-height: 1000px;
        opacity: 1;
        visibility: visible;
    }
    
    /* Force collapse if not explicitly expanded, even if item is active */
    .nav-item.has-submenu:not(.expanded) .submenu {
        max-height: 0 !important;
        opacity: 0 !important;
        visibility: hidden !important;
    }
}

/* On mobile/tablet, submenu stays collapsed */
@media (max-width: 1024px) {
    .nav-item.has-submenu .submenu {
        max-height: 0 !important;
        opacity: 0 !important;
        visibility: hidden !important;
    }
    
    .nav-item.has-submenu.expanded .submenu {
        max-height: 0 !important;
        opacity: 0 !important;
        visibility: hidden !important;
    }
}

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

.submenu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.submenu a:hover {
    background: rgba(30, 112, 182, 0.2);
    color: var(--color-text-primary);
}

/* Bottom Navigation (Mobile) */
.ui5-navigation-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 27, 84, 0.3);
    backdrop-filter: var(--backdrop-blur-xl) var(--backdrop-saturate);
    border-top: 1px solid rgba(30, 112, 182, 0.4);
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -4px 12px -2px rgba(0, 0, 0, 0.3);
    z-index: var(--z-sticky);
    min-height: var(--nav-bottom-height);
}

.nav-menu-bottom {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
    justify-content: space-around;
    align-items: center;
}

.nav-menu-bottom .nav-item {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-menu-bottom .nav-link {
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs);
    min-width: var(--button-min-size);
    min-height: var(--button-min-size);
    font-size: var(--font-size-xs);
}

.nav-menu-bottom .nav-icon {
    width: 1.5rem;
    height: 1.5rem;
}

/* Mobile Menu Modal */
.mobile-menu-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    z-index: var(--z-modal);
}

.mobile-menu-modal.active {
    display: flex;
    align-items: flex-end;
}

.mobile-menu-content {
    background: rgba(0, 27, 84, 0.95);
    backdrop-filter: var(--backdrop-blur-xl) var(--backdrop-saturate);
    border-top-left-radius: var(--radius-2xl);
    border-top-right-radius: var(--radius-2xl);
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    padding: var(--spacing-lg);
    animation: slideUp var(--transition-slow);
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

/* Responsive Navigation */
@media (min-width: 1024px) {
    .ui5-navigation-bottom {
        display: none;
    }
    
    body:not(.sidebar-collapsed) {
        padding-left: var(--nav-sidebar-width);
    }
}

@media (max-width: 1023px) {
    .ui5-navigation-sidebar {
        display: none;
    }
    
    body {
        padding-bottom: var(--nav-bottom-height);
    }
}

/* ============================================
   DRAG & DROP UPLOAD COMPONENT
   ============================================ */

.drop-zone {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    background: var(--color-glass-bg);
    backdrop-filter: var(--backdrop-blur-md) var(--backdrop-saturate);
    cursor: pointer;
    transition: all var(--transition-base);
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.drop-zone:hover {
    border-color: var(--color-primary);
    background: rgba(59, 130, 246, 0.1);
}

.drop-zone.drag-over {
    border-color: var(--color-primary);
    background: rgba(59, 130, 246, 0.2);
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.drop-zone:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.drop-zone-text {
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.drop-zone-hint {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
}

.drop-zone-icon {
    font-size: 3rem;
    opacity: 0.7;
    transition: opacity var(--transition-base);
}

.drop-zone:hover .drop-zone-icon,
.drop-zone.drag-over .drop-zone-icon {
    opacity: 1;
}

/* File Preview Container */
.file-preview-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* File Item */
.file-item {
    position: relative;
    background: var(--color-glass-bg);
    backdrop-filter: var(--backdrop-blur-md) var(--backdrop-saturate);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
}

.file-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* File Preview Content */
.file-preview-content {
    width: 100%;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-background-secondary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.file-preview-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.file-preview-icon {
    font-size: 3rem;
    opacity: 0.7;
}

/* File Info */
.file-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.file-name {
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-size {
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
}

/* Remove Button */
.file-remove-btn {
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-xs);
    width: 2rem;
    height: 2rem;
    min-width: var(--button-min-size);
    min-height: var(--button-min-size);
    background: rgba(239, 68, 68, 0.8);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: var(--font-size-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    z-index: 10;
}

.file-remove-btn:hover {
    background: var(--color-error);
    transform: scale(1.1);
}

.file-remove-btn:focus {
    outline: 2px solid var(--color-error);
    outline-offset: 2px;
}

/* Progress Bar */
.file-progress {
    width: 100%;
    height: 4px;
    background: var(--color-background-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-top: var(--spacing-xs);
}

.file-progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
    width: 0%;
}

/* Responsive */
@media (max-width: 640px) {
    .drop-zone {
        min-height: 150px;
        padding: var(--spacing-lg);
    }
    
    .drop-zone-text {
        font-size: var(--font-size-md);
    }
    
    .drop-zone-icon {
        font-size: 2rem;
    }
    
    .file-preview-container {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .file-item {
        padding: var(--spacing-sm);
    }
}

/* ===== Drag & Drop - Faza 4 / Plan 15 ===== */
.drag-over {
    outline: 2px dashed #60A5FA !important;
    outline-offset: -4px;
    background: rgba(59, 130, 246, 0.08) !important;
    border-radius: .5rem;
}