/**
 * Global Modal System
 * A unified, responsive, accessible modal system for Edirectz
 * 
 * Categories:
 * - .modal--confirmation: Simple confirm/cancel dialogs
 * - .modal--form: Forms with input fields (auth, settings, etc.)
 * - .modal--selection: Grid/card selection (templates, files, etc.)
 * - .modal--preview: Content preview with device simulation
 * - .modal--editor: Code/content editors
 * - .modal--upload: File upload interfaces
 */

/* ========================================
   CSS Variables for Modal System
   ======================================== */
:root {
    /* Modal Dimensions */
    --modal-width-xs: clamp(280px, 90vw, 320px);
    --modal-width-sm: clamp(320px, 90vw, 400px);
    --modal-width-md: clamp(400px, 90vw, 600px);
    --modal-width-lg: clamp(500px, 90vw, 800px);
    --modal-width-xl: clamp(600px, 90vw, 1000px);
    --modal-width-xxl: clamp(800px, 95vw, 1400px);
    
    /* Modal Heights */
    --modal-height-auto: auto;
    --modal-height-sm: min(60dvh, 600px);
    --modal-height-md: min(75dvh, 800px);
    --modal-height-lg: min(85dvh, 900px);
    --modal-height-full: 100dvh;
    
    /* Modal Spacing */
    --modal-padding-xs: clamp(0.75rem, 2vw, 1rem);
    --modal-padding-sm: clamp(1rem, 2.5vw, 1.25rem);
    --modal-padding-md: clamp(1.25rem, 3vw, 1.5rem);
    --modal-padding-lg: clamp(1.5rem, 3.5vw, 2rem);
    --modal-padding-xl: clamp(2rem, 4vw, 2.5rem);
    --modal-footer-padding-y: calc(var(--modal-padding-md) / 2);
    --modal-body-bottom-gap: clamp(0.5rem, 1vw, 0.75rem);
    
    /* Modal Typography */
    --modal-title-size: clamp(1.25rem, 3vw, 1.75rem);
    --modal-text-size: clamp(0.875rem, 2vw, 1rem);
    --modal-text-sm: clamp(0.75rem, 1.8vw, 0.875rem);
    
    /* Modal Border Radius */
    --modal-radius: clamp(0.75rem, 2vw, 1rem);
    --modal-radius-mobile: 0;
    
    /* Modal Z-Index */
    --modal-z-overlay: 9999;
    --modal-z-container: 10000;
    --modal-z-toast: 11000;
    --modal-z-tooltip: 12000;
    
    /* Modal Animation */
    --modal-duration: 0.25s;
    --modal-easing: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   Base Modal Overlay
   ======================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--modal-z-overlay);
    display: grid;
    place-items: center;
    padding: var(--modal-padding-sm);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--modal-duration) var(--modal-easing),
                visibility var(--modal-duration) var(--modal-easing);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
    overscroll-behavior: contain;
}

@supports selector(html:has(.modal-overlay.active)) {
    html:has(.modal-overlay.active) {
        overflow: hidden;
        overscroll-behavior: none;
    }
}

#cookieManageModal {
    place-items: center;
    align-items: center;
    justify-items: center;
}

#cookieManageModal .modal-container {
    margin: auto;
    max-height: min(var(--modal-height-lg), calc(100vh - 2 * var(--modal-padding-sm)));
}

#cookieManageModal .cookie-preference-checkbox {
    width: 1.35rem;
    height: 1.35rem;
    min-width: 1.35rem;
    margin: 0;
    accent-color: var(--primary-color);
    cursor: pointer;
}

/* ========================================
   Base Modal Container
   ======================================== */
.modal-container {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--modal-radius);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-width: var(--modal-width-md);
    max-height: var(--modal-height-md);
    width: 100%;
    transform: scale(0.95) translateY(-20px);
    transition: transform var(--modal-duration) var(--modal-easing);
}

.modal-overlay.active .modal-container {
    transform: scale(1) translateY(0);
}

/* ========================================
   Modal Header
   ======================================== */
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--modal-padding-sm);
    padding: var(--modal-padding-md);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-color);
    flex-shrink: 0;
}

.modal-header h2,
.modal-header h3 {
    margin: 0;
    font-size: var(--modal-title-size);
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.2;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.modal-header p {
    margin: 0;
    font-size: var(--modal-text-sm);
    color: var(--text-muted);
    line-height: 1.4;
}

/* ========================================
   Modal Close Button
   ======================================== */
.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.modal-close:hover,
.modal-close:focus-visible {
    background: var(--bg-hover);
    color: var(--text-main);
}

.modal-close:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.modal-close svg {
    width: 20px;
    height: 20px;
}

/* ========================================
   Modal Body
   ======================================== */
.modal-body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    padding: var(--modal-padding-md);
    padding-bottom: calc(var(--modal-padding-md) + var(--modal-body-bottom-gap));
    min-height: 0;
}

/* ========================================
   Modal Footer
   ======================================== */
.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--modal-padding-sm);
    padding: var(--modal-footer-padding-y) var(--modal-padding-md);
    border-top: 1px solid var(--border-color);
    background: var(--bg-color);
    flex-shrink: 0;
}

.modal-footer .btn {
    min-width: clamp(80px, 20vw, 120px);
}

/* ========================================
   Category: Confirmation Modal
   ======================================== */
.modal--confirmation .modal-container {
    max-width: var(--modal-width-sm);
    max-height: var(--modal-height-auto);
}

.modal--confirmation .modal-body {
    padding: var(--modal-padding-lg);
    text-align: center;
}

.modal--confirmation .modal-body p {
    font-size: var(--modal-text-size);
    color: var(--text-main);
    line-height: 1.6;
}

.modal--confirmation .modal-footer {
    justify-content: center;
}

/* ========================================
   Category: Form Modal
   ======================================== */
.modal--form .modal-container {
    max-width: var(--modal-width-md);
    max-height: var(--modal-height-lg);
}

.modal--form .modal-body {
    padding: 0 var(--modal-padding-lg) 0;
    display: flex;
    flex-direction: column;
}

.modal--form .form-group {
    margin-bottom: var(--modal-padding-md);
}

.modal--form .form-group.has-link {
    margin-bottom: 0;
}

.modal--form .form-group.has-link .md-input-container {
    margin-bottom: 0;
}

.modal--form .form-group:last-child {
    margin-bottom: 0;
}

.modal--form .btn-full {
    display: flex;
    width: min(100%, 220px);
    min-width: 0;
    margin-inline: auto;
}

.modal--form .modal-body > .modal-footer {
    align-self: stretch;
    justify-content: center;
    margin: auto calc(-1 * var(--modal-padding-lg)) 0;
    padding: var(--modal-footer-padding-y) var(--modal-padding-lg);
}

.modal--form #registerForm2 .modal-footer {
    position: relative;
    flex-direction: column;
    justify-content: center;
    gap: var(--modal-padding-xs);
    margin: var(--modal-padding-md) calc(-1 * var(--modal-padding-lg)) 0;
    padding: var(--modal-footer-padding-y) var(--modal-padding-lg);
}

.modal--form #registerForm2 .modal-footer p {
    text-align: center;
    margin-top: var(--modal-padding-sm);
    width: 100%;
}

.modal--form.registration-modal-wide .modal-container {
    max-width: var(--modal-width-lg);
}

/* Two-button groups in modal body with left/right positioning */
.modal-body .btn-group {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    gap: var(--modal-padding-sm);
    margin-top: var(--modal-padding-sm);
}

.modal-body .btn-group .btn {
    width: min(140px, 45%);
    min-height: 48px;
}

#verificationSentView .btn-group {
    margin-bottom: var(--modal-padding-sm);
}

#verificationSentFooter {
    justify-content: center;
    text-align: center;
}

#verificationSentFooter p {
    width: 100%;
    text-align: center;
}

@media (min-width: 769px) {
    .modal-body .btn-group .btn {
        width: min(220px, 100%);
    }
}

/* Mobile button text shortening */
@media (max-width: 768px) {
    .btn[data-mobile-text] {
        position: relative;
    }

    .btn[data-mobile-text] .btn-text {
        display: none !important;
        visibility: hidden;
        opacity: 0;
    }

    .btn[data-mobile-text]::after {
        content: attr(data-mobile-text);
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        white-space: nowrap;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
        height: 100%;
    }
}

/* Secure field styling for mobile blur and desktop partial masking */
.secure-field {
    cursor: pointer;
    transition: filter 0.3s ease;
}

@media (max-width: 768px) {
    .secure-field {
        filter: blur(4px);
        user-select: none;
    }

    .secure-field.revealed {
        filter: blur(0);
        user-select: text;
    }
}

@media (min-width: 769px) {
    .secure-field {
        filter: blur(0);
    }

    .secure-field.masked {
        color: var(--text-muted);
        font-style: italic;
    }

    .secure-field.masked::after {
        content: " (tap to reveal)";
        font-size: 0.8em;
        color: var(--text-muted);
        margin-left: 4px;
    }

    .secure-field.revealed::after {
        content: " (tap to hide)";
        font-size: 0.8em;
        color: var(--text-muted);
        margin-left: 4px;
    }
}

/* ========================================
   Category: Selection Modal
   ======================================== */
.modal--selection .modal-container {
    max-width: var(--modal-width-lg);
    max-height: var(--modal-height-lg);
}

.modal--selection .modal-body {
    padding: var(--modal-padding-md);
}

.modal--selection .selection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--modal-padding-md);
}

/* ========================================
   Category: Preview Modal
   ======================================== */
.modal--preview .modal-container {
    max-width: var(--modal-width-xxl);
    max-height: var(--modal-height-lg);
}

.modal--preview .modal-body {
    padding: 0;
    padding-bottom: calc(var(--modal-padding-md) + var(--modal-body-bottom-gap));
    display: flex;
    align-items: center;
    justify-content: center;
    background: #111827;
}

/* ========================================
   Category: Editor Modal
   ======================================== */
.modal--editor .modal-container {
    max-width: var(--modal-width-xl);
    max-height: var(--modal-height-lg);
}

.modal--editor .modal-body {
    padding: 0;
    padding-bottom: calc(var(--modal-padding-md) + var(--modal-body-bottom-gap));
    display: flex;
    flex-direction: column;
}

/* ========================================
   Category: Upload Modal
   ======================================== */
.modal--upload .modal-container {
    max-width: var(--modal-width-lg);
    max-height: var(--modal-height-lg);
}

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

/* ========================================
   Size Modifiers
   ======================================== */
.modal-container--small {
    max-width: var(--modal-width-sm);
}

.modal-container--large {
    max-width: var(--modal-width-lg);
}

.modal-container--xlarge {
    max-width: var(--modal-width-xl);
}

.modal-container--full {
    max-width: var(--modal-width-xxl);
}

/* ========================================
   Responsive Breakpoints
   ======================================== */

/* Very Small Mobile (320px - 375px) */
@media (max-width: 375px) {
    :root {
        --modal-padding-xs: 0.75rem;
        --modal-padding-sm: 0.875rem;
        --modal-padding-md: 1rem;
        --modal-padding-lg: 1.25rem;
    }
    
    .modal-overlay {
        padding: 0;
    }
    
    .modal-container {
        max-width: 100vw;
        max-height: 100dvh;
        border-radius: var(--modal-radius-mobile);
        border: none;
    }
    
    .modal-header {
        padding: var(--modal-padding-sm);
    }
    
    .modal-body {
        padding: var(--modal-padding-sm);
    }
    
    .modal-footer {
        padding: var(--modal-footer-padding-y) var(--modal-padding-sm);
        flex-direction: column;
        gap: var(--modal-padding-sm);
    }
    
    .modal-footer .btn {
        width: 100%;
    }
    
    .modal--selection .selection-grid {
        grid-template-columns: 1fr;
    }
}

/* Small Mobile (376px - 480px) */
@media (min-width: 376px) and (max-width: 480px) {
    .modal-overlay {
        padding: var(--modal-padding-xs);
    }
    
    .modal-container {
        max-width: 100vw;
        max-height: 100dvh;
        border-radius: var(--modal-radius-mobile);
    }
    
    .modal--preview .modal-container,
    .modal--editor .modal-container {
        border-radius: 0;
    }
}

/* Tablet (481px - 768px) */
@media (min-width: 481px) and (max-width: 768px) {
    .modal-container {
        max-width: 90vw;
    }
    
    .modal--selection .selection-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

/* Desktop (769px+) */
@media (min-width: 769px) {
    .modal-container {
        max-width: var(--modal-width-md);
    }
}

/* ========================================
   Short Viewport Heights
   ======================================== */
@media (max-height: 600px) {
    .modal-container {
        max-height: 95dvh;
    }
    
    .modal-header {
        padding: var(--modal-padding-sm);
    }
    
    .modal-body {
        padding: var(--modal-padding-sm);
    }
    
    .modal-footer {
        padding: var(--modal-footer-padding-y) var(--modal-padding-sm);
    }
    
    :root {
        --modal-title-size: 1.25rem;
    }
}

@media (max-height: 500px) {
    .modal-header h2,
    .modal-header h3 {
        font-size: 1.125rem;
    }
    
    .modal-body {
        padding: var(--modal-padding-xs);
    }
}

/* ========================================
   Accessibility
   ======================================== */
.modal-overlay[aria-hidden="true"] {
    display: none;
}

.modal-container:focus {
    outline: none;
}

.modal-close:focus-visible,
.modal-footer .btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Skip to modal content for keyboard users */
.modal-skip-link {
    position: absolute;
    top: -100%;
    left: -100%;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.modal-skip-link:focus {
    top: 0;
    left: 0;
    width: auto;
    height: auto;
    padding: var(--modal-padding-sm);
    background: var(--primary-color);
    color: var(--text-inverse);
    z-index: var(--modal-z-tooltip);
}

/* ========================================
   Loading State
   ======================================== */
.modal-container--loading {
    pointer-events: none;
}

.modal-container--loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

@media (prefers-color-scheme: dark) {
    .modal-container--loading::after {
        background: rgba(0, 0, 0, 0.8);
    }
}

/* ========================================
   Animation Variants
   ======================================== */
.modal-overlay--fade .modal-container {
    animation: modalFadeIn var(--modal-duration) var(--modal-easing);
}

.modal-overlay--slide .modal-container {
    animation: modalSlideUp var(--modal-duration) var(--modal-easing);
}

.modal-overlay--scale .modal-container {
    animation: modalScaleIn var(--modal-duration) var(--modal-easing);
}

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

@keyframes modalSlideUp {
    from {
        transform: translateY(100%);
    }

    to {
        transform: translateY(0);
    }
}

@keyframes modalScaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Mobile bottom sheet animation */
@media (max-width: 480px) {
    .modal-overlay--slide .modal-container {
        transform: translateY(100%);
    }
    
    .modal-overlay.active .modal-overlay--slide .modal-container {
        transform: translateY(0);
    }
}