/**
 * Chap Design System - Overlays
 * Modals, toasts, dropdowns overlay styles
 */

/* ===== Modal Backdrop ===== */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-default);
}

.modal-backdrop.modal-visible {
    opacity: 1;
}

.modal-backdrop.modal-closing {
    opacity: 0;
}

/* ===== Modal ===== */
.modal {
    background: var(--bg-glass-heavy);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 440px;
    max-height: calc(100vh - var(--space-8));
    overflow: hidden;
    transform: scale(0.95) translateY(10px);
    transition: transform var(--duration-normal) var(--ease-bounce);
}

.modal-visible .modal {
    transform: scale(1) translateY(0);
}

.modal-closing .modal {
    transform: scale(0.95) translateY(10px);
}

.modal-container {
    display: flex;
    flex-direction: column;
}

/* Modal Header */
.modal-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-6) var(--space-6) var(--space-4);
    text-align: center;
}

.modal-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
}

.modal-icon svg {
    width: 24px;
    height: 24px;
}

.modal-icon-info {
    background-color: var(--accent-blue-subtle);
    color: var(--accent-blue);
}

.modal-icon-success {
    background-color: var(--accent-green-subtle);
    color: var(--accent-green);
}

.modal-icon-warning {
    background-color: var(--accent-yellow-subtle);
    color: var(--accent-yellow);
}

.modal-icon-danger {
    background-color: var(--accent-red-subtle);
    color: var(--accent-red);
}

.modal-icon-confirm {
    background-color: var(--accent-blue-subtle);
    color: var(--accent-blue);
}

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

/* Modal Body */
.modal-body {
    padding: 0 var(--space-6) var(--space-4);
}

.modal-message {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-align: center;
    line-height: var(--leading-relaxed);
    margin: 0;
}

.modal-input {
    margin-top: var(--space-4);
}

/* Modal Footer */
.modal-footer {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6) var(--space-6);
    justify-content: center;
}

.modal-footer .btn {
    flex: 1;
    max-width: 160px;
}

/* Large Modal */
.modal-lg .modal {
    max-width: 600px;
}

/* Full Modal */
.modal-full .modal {
    max-width: 90vw;
    max-height: 90vh;
}

/* ===== Dropdown Menu ===== */
.dropdown {
    position: relative;
}

/* Dropdown triggers used as select-like inputs */
.btn.dropdown-trigger {
    justify-content: space-between;
}

.btn.dropdown-trigger .icon {
    flex-shrink: 0;
}

.dropdown-menu {
    display: none;
    position: fixed;
    min-width: 180px;
    background: var(--bg-glass-heavy);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-1);
    z-index: var(--z-dropdown);
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity var(--duration-fast) var(--ease-default),
                transform var(--duration-fast) var(--ease-default);
}

/* Optional search area inside dropdowns */
.dropdown-search {
    padding: var(--space-3);
    border-bottom: 1px solid var(--border-primary);
}

.dropdown-items {
    max-height: 240px;
    overflow-y: auto;
}

.dropdown-empty {
    padding: var(--space-4);
    text-align: center;
    color: var(--text-tertiary);
    font-size: var(--text-sm);
}

.dropdown-item.active {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Hide native selects while keeping them in the form for submission */
.select-native-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Error highlight for enhanced select triggers */
.select-trigger.select-trigger-error {
    border-color: var(--accent-red);
}

.select-trigger.select-trigger-error:focus {
    box-shadow: var(--shadow-glow-red);
}

.dropdown-menu.dropdown-open {
    opacity: 1;
    transform: translateY(0);
}

.dropdown-menu.dropdown-closing {
    opacity: 0;
    transform: translateY(-4px);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-colors);
    width: 100%;
    text-align: left;
    background: none;
    border: none;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    outline: none;
}

.dropdown-item:active {
    background-color: var(--bg-secondary);
}

.dropdown-item.disabled {
    opacity: 0.5;
    pointer-events: none;
}

.dropdown-item-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.dropdown-item-danger {
    color: var(--accent-red);
}

.dropdown-item-danger:hover {
    background-color: var(--accent-red-subtle);
    color: var(--accent-red);
}

.dropdown-divider {
    height: 1px;
    background-color: var(--border-primary);
    margin: var(--space-1) 0;
}

.dropdown-header {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ===== Select Dropdown Enhancements ===== */
.select-trigger {
    justify-content: space-between;
}

.select-trigger-label {
    flex: 1;
    min-width: 0;
    text-align: left;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.select-chevron {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: var(--text-tertiary);
}

.select-dropdown-menu {
    max-height: 320px;
    overflow: hidden;
}

.select-multi-item {
    justify-content: flex-start;
}

.select-multi-check {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    border: 1px solid var(--border-secondary);
    background-color: var(--bg-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.select-multi-check::after {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background-color: transparent;
}

.select-multi-check.checked {
    border-color: var(--accent-blue);
    background-color: var(--accent-blue-subtle);
}

.select-multi-check.checked::after {
    background-color: var(--accent-blue);
}

.select-multi-label {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ===== Toast Notifications ===== */
.toast-container {
    position: fixed;
    z-index: var(--z-tooltip);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    pointer-events: none;
    padding: var(--space-4);
    max-width: 100%;
}

.toast-container[data-position="top-right"] {
    top: 0;
    right: 0;
}

.toast-container[data-position="top-left"] {
    top: 0;
    left: 0;
}

.toast-container[data-position="bottom-right"] {
    bottom: 0;
    right: 0;
}

.toast-container[data-position="bottom-left"] {
    bottom: 0;
    left: 0;
}

.toast-container[data-position="top-center"] {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.toast-container[data-position="bottom-center"] {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    min-width: 300px;
    max-width: 420px;
    padding: var(--space-4);
    background: var(--bg-glass-heavy);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateX(100%);
    transition: opacity var(--duration-normal) var(--ease-default),
                transform var(--duration-normal) var(--ease-bounce);
}

.toast-container[data-position^="top-left"] .toast,
.toast-container[data-position="bottom-left"] .toast {
    transform: translateX(-100%);
}

.toast-container[data-position="top-center"] .toast,
.toast-container[data-position="bottom-center"] .toast {
    transform: translateY(-20px);
}

.toast.toast-visible {
    opacity: 1;
    transform: translateX(0) translateY(0);
}

.toast.toast-dismissing {
    opacity: 0;
    transform: translateX(100%);
}

.toast-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.toast-info .toast-icon { color: var(--accent-blue); }
.toast-success .toast-icon { color: var(--accent-green); }
.toast-warning .toast-icon { color: var(--accent-yellow); }
.toast-danger .toast-icon { color: var(--accent-red); }

.toast-message {
    flex: 1;
    font-size: var(--text-sm);
    color: var(--text-primary);
    line-height: var(--leading-normal);
}

.toast-close {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    padding: 0;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-colors);
}

.toast-close:hover {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--accent-blue);
    transform-origin: left;
    animation: toast-progress linear forwards;
}

.toast-info .toast-progress { background-color: var(--accent-blue); }
.toast-success .toast-progress { background-color: var(--accent-green); }
.toast-warning .toast-progress { background-color: var(--accent-yellow); }
.toast-danger .toast-progress { background-color: var(--accent-red); }

@keyframes toast-progress {
    from { transform: scaleX(1); }
    to { transform: scaleX(0); }
}

/* ===== Tooltips ===== */
.tooltip {
    position: fixed;
    padding: var(--space-1-5) var(--space-2-5);
    background-color: var(--bg-inverse);
    color: var(--text-inverse);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-md);
    white-space: nowrap;
    z-index: var(--z-tooltip);
    pointer-events: none;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity var(--duration-fast) var(--ease-default),
                transform var(--duration-fast) var(--ease-default);
}

.tooltip.tooltip-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Popover ===== */
.popover {
    position: fixed;
    background: var(--bg-glass-heavy);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    min-width: 200px;
    max-width: 320px;
}

.popover-header {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-primary);
}

.popover-title {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin: 0;
}

.popover-body {
    padding: var(--space-4);
}

/* ===== Command Palette / Search Modal ===== */
.command-palette {
    position: fixed;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 600px;
    background: var(--bg-glass-heavy);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-modal);
    overflow: hidden;
}

.command-palette-input {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-primary);
    font-size: var(--text-base);
    color: var(--text-primary);
}

.command-palette-input::placeholder {
    color: var(--text-tertiary);
}

.command-palette-input:focus {
    outline: none;
}

.command-palette-results {
    max-height: 320px;
    overflow-y: auto;
    padding: var(--space-2);
}

.command-palette-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-colors);
}

.command-palette-item:hover,
.command-palette-item.active {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.command-palette-item-icon {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}

.command-palette-empty {
    padding: var(--space-8);
    text-align: center;
    color: var(--text-tertiary);
}

/* ===== Mobile responsive adjustments ===== */
@media (max-width: 639px) {
    .modal {
        max-width: calc(100vw - var(--space-8));
    }
    
    .toast {
        min-width: auto;
        max-width: calc(100vw - var(--space-8));
    }
    
    .toast-container {
        left: 0;
        right: 0;
        padding: var(--space-2);
    }
    
    .toast-container[data-position="top-center"],
    .toast-container[data-position="bottom-center"] {
        transform: none;
    }
}