/* ===== MODAL SYSTEM ===== */
/* Unified modal component with composition pattern */

/* ===== BASE MODAL STRUCTURE ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    animation: fadeIn 0.15s ease;
    overflow-y: auto; /* Allow scrolling on small screens */
    overflow-x: hidden;
    padding: var(--spacing-medium); /* Add padding for better spacing on mobile */
}

/* Mobile overlay adjustments */
@media (max-width: 400px) {
    .modal-overlay {
        padding: var(--spacing-small); /* Smaller padding on mobile */
        align-items: flex-start; /* Align to top on very small screens */
        padding-top: 4vh; /* Top padding for better positioning */
    }
}

@media (max-width: 375px) {
    .modal-overlay {
        padding: var(--spacing-small);
        padding-top: 5vh; /* Slightly more top padding */
        align-items: flex-start;
    }
}

.modal-overlay.active {
    display: flex;
}

.modal-overlay.closing {
    animation: fadeOut 0.15s ease;
}

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

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

/* Modal Container */
/* Both .modal and .ds-modal work for backward compatibility */
.modal,
.ds-modal {
    background: var(--glass-bg-strong);
    border-radius: var(--radius-modal);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    max-width: min(400px, 90vw);
    max-height: 90vh; /* Use 90% of viewport height maximum */
    height: auto; /* Allow modal to shrink to content size */
    min-height: 200px; /* Prevent modals from being too small */
    width: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalSlideIn 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    margin: auto; /* Center modal vertically */
}

.modal.closing,
.ds-modal.closing {
    animation: modalSlideOut 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes modalSlideOut {
    from {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
    to {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
}

/* ===== MODAL HEADER ===== */
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-medium) var(--spacing-medium) var(--spacing-small) var(--spacing-medium);
    border-bottom: 2px solid var(--glass-border); /* Increased from 1px for visibility */
    flex-shrink: 0;
    gap: var(--spacing-small);
}

/* Mobile header adjustments */
@media (max-width: 400px) {
    .modal-header {
        padding: var(--spacing-medium);
        border-bottom-width: 2px;
    }
}

.modal-title,
.ds-modal-title {
    font-size: var(--font-size-xl); /* 24px - increased for better readability */
    font-weight: var(--font-weight-bold);
    margin: 0;
    flex: 1;
    text-align: center;
    color: var(--color-text-primary);
}

/* Mobile title adjustments */
@media (max-width: 400px) {
    .modal-title,
    .ds-modal-title {
        font-size: var(--font-size-lg); /* 18px on mobile - still readable */
    }
}

@media (max-width: 375px) {
    .modal-title,
    .ds-modal-title {
        font-size: var(--font-size-lg); /* Keep 18px on very small screens */
    }
}

/* Clickable modal title (for renaming pets) */
.modal-title.clickable,
#pet-library-title.clickable {
    cursor: pointer;
    transition: color 0.2s ease, opacity 0.2s ease;
}

.modal-title.clickable:hover,
#pet-library-title.clickable:hover {
    color: var(--color-accent-primary);
    opacity: 0.8;
}

/* Modal Navigation Buttons */
.modal-nav {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--color-text-primary);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
}

.modal-nav:hover {
    background: var(--glass-bg-strong);
    transform: scale(1.1);
}

.modal-nav:active {
    transform: scale(0.95);
}

/* Modal close and back buttons inherit from .modal-nav - no additional styles needed */

/* ===== MODAL CONTENT ===== */
.modal-content {
    flex: 1 1 auto;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-medium);
    min-height: 150px; /* Ensure minimum height for content visibility - prevents collapse */
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

/* Modal Content Variants */
.modal-library .modal-content {
    padding: var(--spacing-medium); /* Increased from small */
    min-height: 200px; /* Ensure minimum height for library content */
}

.modal-detail .modal-content {
    padding: var(--spacing-large);
    min-height: 200px; /* Ensure minimum height for detail content */
}

.modal-confirm .modal-content {
    text-align: center;
    padding: var(--spacing-xl);
    min-height: 100px; /* Smaller min-height for confirm modals since they have less content */
}

/* Mobile content padding adjustments */
@media (max-width: 400px) {
    .modal-library .modal-content {
        padding: var(--spacing-medium);
        min-height: 180px; /* Keep reasonable min-height for library */
    }
    
    .modal-detail .modal-content {
        padding: var(--spacing-medium);
        min-height: 180px; /* Keep reasonable min-height for detail */
    }
    
    .modal-confirm .modal-content {
        padding: var(--spacing-large);
        min-height: 100px; /* Smaller for confirm modals */
    }
}

/* Centered content variant */
.modal-content-centered {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    text-align: center;
}

/* Modal content text sizes */
.modal-content p,
.modal-content .text-center {
    font-size: 15px; /* Slightly larger than 14px, but not as large as 16px */
    line-height: var(--line-height-normal);
}

.modal-content h3,
.modal-content .font-bold {
    font-size: 17px; /* Slightly larger than original, but not as large as 18px */
    font-weight: var(--font-weight-bold);
}

.modal-content .text-secondary {
    font-size: 13px; /* Slightly larger than 12px, but not as large as 14px */
}

/* Mobile adjustments for modal text */
@media (max-width: 400px) {
    .modal-content p,
    .modal-content .text-center {
        font-size: 15px; /* Keep slightly larger on mobile */
    }
    
    .modal-content h3,
    .modal-content .font-bold {
        font-size: 17px; /* Keep slightly larger on mobile */
    }
}

/* ===== MODAL FOOTER ===== */
.modal-footer {
    padding: var(--spacing-medium);
    border-top: 1px solid var(--glass-border);
    background: var(--glass-bg-strong);
    background-image: var(--glass-gradient-overlay-strong);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

/* Modal actions container - holds buttons */
.modal-actions {
    display: flex;
    gap: var(--spacing-small);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
}

.ds-modal-buttons,
.modal-buttons {
    /* Alias for modal-footer */
    padding: var(--spacing-medium);
    border-top: 1px solid var(--glass-border);
    flex-shrink: 0;
    display: flex;
    gap: var(--spacing-small);
    justify-content: flex-end;
}

/* ===== RESPONSIVE ===== */
/* Modal actions - buttons should fit within modal width */
.modal-actions .button,
.modal-actions .ds-button {
    max-width: calc(100% - var(--spacing-small)); /* Account for gap */
}

/* On very small modals (when viewport is small), stack buttons */
@media (max-width: 400px) {
    .modal,
    .ds-modal {
        max-height: 90vh; /* Use 90% of viewport maximum */
        height: auto; /* Allow modal to shrink to content */
        min-height: 180px; /* Prevent modals from being too small */
        margin: 5vh auto; /* Better vertical centering with margin */
    }
    
    .modal-footer {
        padding: var(--spacing-medium); /* Increased from small */
    }
    
    .modal-actions {
        flex-direction: column;
        gap: var(--spacing-medium); /* Increased from small */
    }
    
    .modal-actions .button,
    .modal-actions .ds-button {
        width: 100%;
        max-width: 100%;
    }
}

/* ===== MODAL LOADING STATES ===== */
/* Loading overlay - shown while content is being prepared */
.modal-loading-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg-strong);
    border-radius: var(--radius-modal);
    z-index: 10;
    opacity: 1;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.3s;
    pointer-events: none;
}

.modal-loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

/* Loading spinner */
.modal-loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--glass-border);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: modalSpinnerRotate 0.8s linear infinite;
}

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

/* Loading skeleton for content */
.modal-loading-skeleton {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-medium);
    padding: var(--spacing-medium);
    width: 100%;
}

.modal-skeleton-line {
    height: 16px;
    background: linear-gradient(
        90deg,
        var(--glass-bg) 0%,
        var(--glass-bg-strong) 50%,
        var(--glass-bg) 100%
    );
    background-size: 200% 100%;
    border-radius: var(--radius-sm);
    animation: modalSkeletonShimmer 1.5s ease-in-out infinite;
}

.modal-skeleton-line.short {
    width: 60%;
}

.modal-skeleton-line.medium {
    width: 80%;
}

.modal-skeleton-line.full {
    width: 100%;
}

.modal-skeleton-card {
    width: 100%;
    height: 120px;
    background: linear-gradient(
        90deg,
        var(--glass-bg) 0%,
        var(--glass-bg-strong) 50%,
        var(--glass-bg) 100%
    );
    background-size: 200% 100%;
    border-radius: var(--radius-md);
    animation: modalSkeletonShimmer 1.5s ease-in-out infinite;
}

@keyframes modalSkeletonShimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* ===== MODAL CONTENT ANIMATIONS ===== */
/* Staggered reveal animations for modal content */
.modal-header,
.modal-content,
.modal-footer {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-header.revealed,
.modal-content.revealed,
.modal-footer.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered card animations */
.modal-content.revealed .library-card,
.modal-content.revealed .ds-card {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
    animation: modalCardReveal 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.modal-content.revealed .library-card:nth-child(1),
.modal-content.revealed .ds-card:nth-child(1) {
    animation-delay: 0.05s;
}

.modal-content.revealed .library-card:nth-child(2),
.modal-content.revealed .ds-card:nth-child(2) {
    animation-delay: 0.1s;
}

.modal-content.revealed .library-card:nth-child(3),
.modal-content.revealed .ds-card:nth-child(3) {
    animation-delay: 0.15s;
}

.modal-content.revealed .library-card:nth-child(4),
.modal-content.revealed .ds-card:nth-child(4) {
    animation-delay: 0.2s;
}

.modal-content.revealed .library-card:nth-child(5),
.modal-content.revealed .ds-card:nth-child(5) {
    animation-delay: 0.25s;
}

.modal-content.revealed .library-card:nth-child(6),
.modal-content.revealed .ds-card:nth-child(6) {
    animation-delay: 0.3s;
}

.modal-content.revealed .library-card:nth-child(n+7),
.modal-content.revealed .ds-card:nth-child(n+7) {
    animation-delay: 0.35s;
}

@keyframes modalCardReveal {
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Image loading states */
.modal-content img {
    opacity: 0;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-content img.loaded {
    opacity: 1;
}

/* Enhanced modal slide-in with better timing */
.modal,
.ds-modal {
    animation: modalSlideInEnhanced 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalSlideInEnhanced {
    from {
        opacity: 0;
        transform: scale(0.92) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Smooth content fade-in when ready */
.modal-content-ready {
    animation: modalContentFadeIn 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

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