/* Glass Foundations */
.glass-surface {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border: 1px solid var(--glass-border);
}

/* Glass Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal), border-color var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 100%);
    pointer-events: none;
}

.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-highlight);
}

/* Glass Panel */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
}

/* Buttons */
.glass-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.glass-button.primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.glass-button.primary:hover {
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    transform: translateY(-1px);
}

.glass-button.primary::after {
    content: '';
    position: absolute;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.2), transparent);
    transform: rotate(45deg) translateX(-100%);
    transition: transform 0.6s ease;
}

.glass-button.primary:hover::after {
    transform: rotate(45deg) translateX(100%);
}

.glass-button.secondary {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border-color: var(--glass-border);
    color: var(--text-primary);
}

.glass-button.secondary:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-highlight);
}

.glass-button.danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
    border-color: rgba(239, 68, 68, 0.2);
}

.glass-button.danger:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.4);
}

.glass-button.ghost {
    background: transparent;
    color: var(--text-secondary);
}

.glass-button.ghost:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.glass-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Icon Button */
.glass-button-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    backdrop-filter: blur(var(--glass-blur));
}

.glass-button-icon:hover {
    background: var(--glass-bg-hover);
    color: var(--text-primary);
    border-color: var(--glass-border-highlight);
}

/* Form Controls */
.form-group {
    margin-bottom: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.glass-input, .glass-select, .glass-textarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    backdrop-filter: blur(var(--glass-blur));
}

.glass-input:focus, .glass-select:focus, .glass-textarea:focus {
    border-color: var(--accent-primary);
    background: rgba(0, 0, 0, 0.3);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.glass-input::placeholder, .glass-textarea::placeholder {
    color: var(--text-muted);
}

.glass-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.6)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.glass-select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.glass-textarea {
    min-height: 100px;
    resize: vertical;
}

/* Modals */
.glass-modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.glass-modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.glass-modal {
    background: var(--bg-tertiary); /* solid fallback for accessibility */
    background: linear-gradient(135deg, rgba(30,30,40,0.95), rgba(20,20,30,0.95));
    border: 1px solid var(--glass-border-highlight);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    transform: scale(0.95) translateY(20px);
    opacity: 0;
    transition: all var(--transition-normal);
}

.glass-modal-backdrop.active .glass-modal {
    transform: scale(1) translateY(0);
    opacity: 1;
}

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

.glass-modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
}

.glass-modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
}

.glass-modal-close:hover {
    color: var(--text-primary);
}

.glass-modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
    flex: 1;
}

.glass-modal-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
}

/* Badges */
.glass-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur));
}

.glass-badge.success { background: var(--color-success-bg); color: var(--color-success); border-color: rgba(16, 185, 129, 0.3); }
.glass-badge.warning { background: var(--color-warning-bg); color: var(--color-warning); border-color: rgba(245, 158, 11, 0.3); }
.glass-badge.danger { background: var(--color-danger-bg); color: var(--color-danger); border-color: rgba(239, 68, 68, 0.3); }
.glass-badge.info { background: var(--color-info-bg); color: var(--color-info); border-color: rgba(59, 130, 246, 0.3); }

/* Priority Dots */
.priority-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 8px currentColor;
}
.priority-low { color: var(--priority-low); background-color: var(--priority-low); }
.priority-normal { color: var(--priority-normal); background-color: var(--priority-normal); }
.priority-high { color: var(--priority-high); background-color: var(--priority-high); }
.priority-urgent { color: var(--priority-urgent); background-color: var(--priority-urgent); animation: pulse 2s infinite; }

/* Stat Cards */
.glass-stat {
    display: flex;
    flex-direction: column;
    padding: var(--space-lg);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

.stat-title {
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: var(--glass-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Data Tables */
.glass-table-wrapper {
    width: 100%;
    overflow-x: auto;
}

.glass-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    text-align: left;
}

.glass-table th {
    padding: var(--space-md);
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    border-bottom: 1px solid var(--glass-border);
    white-space: nowrap;
}

.glass-table td {
    padding: var(--space-md);
    border-bottom: 1px solid rgba(255,255,255,0.02);
    vertical-align: middle;
}

.glass-table tbody tr {
    transition: background var(--transition-fast);
}

.glass-table tbody tr:hover {
    background: var(--glass-bg);
}

/* Tabs */
.glass-tabs {
    display: flex;
    background: var(--glass-bg);
    border-radius: var(--radius-sm);
    padding: 4px;
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
}

.glass-tab {
    flex: 1;
    text-align: center;
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 4px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.glass-tab.active {
    background: rgba(255,255,255,0.1);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

/* Avatar */
.glass-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    font-weight: bold;
    overflow: hidden;
}

.glass-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Toasts */
.toast-container {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: 9999;
    pointer-events: none;
}

.glass-toast {
    min-width: 300px;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    background: rgba(30, 30, 40, 0.9);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--text-primary);
    pointer-events: auto;
    animation: toastIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.glass-toast.hide {
    animation: toastOut 0.3s ease forwards;
}

.glass-toast.success { border-left: 4px solid var(--color-success); }
.glass-toast.error { border-left: 4px solid var(--color-danger); }
.glass-toast.info { border-left: 4px solid var(--color-info); }
.glass-toast.warning { border-left: 4px solid var(--color-warning); }

/* Toggle Switch */
.glass-toggle {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.glass-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(255,255,255,0.1);
    transition: .4s;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-secondary);
    transition: .4s;
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: var(--accent-primary);
    border-color: var(--accent-secondary);
}

input:checked + .toggle-slider:before {
    transform: translateX(20px);
    background-color: white;
}

/* File Upload */
.glass-file-upload {
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center;
    background: rgba(0,0,0,0.1);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.glass-file-upload:hover, .glass-file-upload.dragover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

/* Color Picker Wrapper */
.glass-color-picker {
    width: 100%;
    height: 42px;
    padding: 2px;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
}
.glass-color-picker input[type="color"] {
    width: 100%;
    height: 100%;
    border: none;
    padding: 0;
    background: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
}
.glass-color-picker input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}
.glass-color-picker input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}

/* FAB */
.glass-fab {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--accent-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5);
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    z-index: 100;
}

.glass-fab:hover {
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.6);
}

/* Empty State */
.glass-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    text-align: center;
    color: var(--text-secondary);
}

.glass-empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

/* Loading */
.glass-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    border-top-color: var(--accent-primary);
    animation: spin 1s ease-in-out infinite;
}

.skeleton {
    background: linear-gradient(90deg, rgba(255,255,255,0.05) 25%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.05) 75%);
    background-size: 400% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
    0% { background-position: 100% 50%; }
    100% { background-position: 0 50%; }
}