:root {
    --background-color-light: #f0f0f0;
    --text-color-light: #333;
    --card-background-light: #ffffff;
    --header-background-light: #e0e0e0;
    --accent-color-light: #ff3b30; /* A reddish accent */

    --background-color-dark: #121212;
    --text-color-dark: #e0e0e0;
    --card-background-dark: #1e1e1e;
    --header-background-dark: #2a2a2a;
    --accent-color-dark: #ff453a; /* Slightly brighter red for dark mode */

    --background-color: var(--background-color-light);
    --text-color: var(--text-color-light);
    --card-background: var(--card-background-light);
    --header-background: var(--header-background-light);
    --accent-color: var(--accent-color-light);

    --type-grass: #78C850; --type-poison: #A040A0; --type-fire: #F08030;
    --type-flying: #A890F0; --type-water: #6890F0; --type-bug: #A8B820;
    --type-normal: #A8A878; --type-electric: #F8D030; --type-ground: #E0C068;
    --type-fairy: #EE99AC; --type-fighting: #C03028; --type-psychic: #F85888;
    --type-rock: #B8A038; --type-steel: #B8B8D0; --type-ice: #98D8D8;
    --type-ghost: #705898; --type-dragon: #7038F8; --type-dark: #705848;
    /* Add more type colors as needed based on PokeAPI output */
}

body.dark-mode {
    --background-color: var(--background-color-dark);
    --text-color: var(--text-color-dark);
    --card-background: var(--card-background-dark);
    --header-background: var(--header-background-dark);
    --accent-color: var(--accent-color-dark);
}

body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.6;
}

header {
    background-color: var(--header-background);
    padding: 1rem;
    text-align: center;
    border-bottom: 2px solid var(--accent-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header h1 {
    margin: 0 0 0.5rem 0;
    color: var(--accent-color);
}

.controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    align-items: center;
}

.search-container input {
    padding: 0.5rem;
    border-radius: 5px;
    border: 1px solid var(--text-color);
    background-color: var(--card-background);
    color: var(--text-color);
    min-width: 250px;
}

.toggles button {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 5px;
    background-color: var(--accent-color);
    color: white;
    cursor: pointer;
    font-weight: bold;
}
.toggles button:hover {
    opacity: 0.8;
}

main {
    padding: 1rem;
}

.pokedex-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
}

.pokemon-card {
    background-color: var(--card-background);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.pokemon-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.pokemon-card:active {
    transform: translateY(-2px) scale(0.98);
    transition: transform 0.1s ease;
}

.pokemon-card.clicked {
    animation: cardClick 0.3s ease;
}

@keyframes cardClick {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.pokemon-card img {
    width: 96px; /* Default sprite size from PokeAPI */
    height: 96px;
    image-rendering: pixelated; /* For pixel art sprites */
    transition: opacity 0.3s ease;
}

.pokemon-card img.loading {
    opacity: 0.5;
}

.pokemon-card h3 { /* Name */
    margin: 0.5rem 0 0.2rem;
    font-size: 1.1em;
}

.pokemon-card .pokemon-id {
    font-size: 0.9em;
    color: #888; /* Will need adjustment for dark mode or use text-color variant */
}
body.dark-mode .pokemon-card .pokemon-id {
    color: #aaa;
}


.pokemon-types span {
    display: inline-block;
    padding: 0.2em 0.5em;
    margin: 0.2em;
    border-radius: 4px;
    font-size: 0.8em;
    color: white;
    text-transform: uppercase;
    transform: scale(0.9);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.pokemon-card .pokemon-types span {
    transform: scale(1);
    opacity: 1;
}

.pokemon-detail-view.show .pokemon-types span {
    transform: scale(1);
    opacity: 1;
}

/* Detail View - Enhanced with Transitions */
.pokemon-detail-view {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, background-color 0.3s ease;
    backdrop-filter: blur(0px);
}

.pokemon-detail-view.show {
    opacity: 1;
    visibility: visible;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.detail-modal-content {
    background-color: var(--card-background);
    padding: 20px;
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    color: var(--text-color);
    transform: scale(0.7) translateY(50px);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.pokemon-detail-view.show .detail-modal-content {
    transform: scale(1) translateY(0);
}

#close-detail-view {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 35px;
    height: 35px;
    font-size: 1.2em;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease, transform 0.2s ease;
    z-index: 10;
}

#close-detail-view:hover {
    background-color: #e03028;
    transform: scale(1.1);
}

#close-detail-view:active {
    transform: scale(0.95);
}
#detail-content img {
    display: block;
    margin: 0 auto 1rem;
    width: 120px;
    height: 120px;
    image-rendering: pixelated;
    transform: scale(0.8);
    opacity: 0;
    transition: transform 0.5s ease, opacity 0.5s ease;
}

.pokemon-detail-view.show #detail-content img {
    transform: scale(1);
    opacity: 1;
}

#detail-content h2 {
    text-align: center;
    color: var(--accent-color);
    transform: translateY(20px);
    opacity: 0;
    transition: transform 0.4s ease 0.1s, opacity 0.4s ease 0.1s;
}

.pokemon-detail-view.show #detail-content h2 {
    transform: translateY(0);
    opacity: 1;
}

#detail-content .detail-section {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--header-background);
    transform: translateY(30px);
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
}

.pokemon-detail-view.show #detail-content .detail-section {
    transform: translateY(0);
    opacity: 1;
}

.pokemon-detail-view.show #detail-content .detail-section:nth-child(1) { transition-delay: 0.1s; }
.pokemon-detail-view.show #detail-content .detail-section:nth-child(2) { transition-delay: 0.15s; }
.pokemon-detail-view.show #detail-content .detail-section:nth-child(3) { transition-delay: 0.2s; }
.pokemon-detail-view.show #detail-content .detail-section:nth-child(4) { transition-delay: 0.25s; }
.pokemon-detail-view.show #detail-content .detail-section:nth-child(5) { transition-delay: 0.3s; }

#detail-content .detail-section:last-child {
    border-bottom: none;
}
#detail-content .detail-section h4 { /* Section titles like Stats, Moves */
    margin-bottom: 0.5rem;
}
#detail-content .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.5rem;
}
#detail-content .stat-item {
    background-color: var(--background-color);
    padding: 0.3rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9em;
    transform: translateX(-20px);
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
}
.pokemon-detail-view.show #detail-content .stat-item {
    transform: translateX(0);
    opacity: 1;
}

.pokemon-detail-view.show #detail-content .stat-item:nth-child(1) { transition-delay: 0.1s; }
.pokemon-detail-view.show #detail-content .stat-item:nth-child(2) { transition-delay: 0.15s; }
.pokemon-detail-view.show #detail-content .stat-item:nth-child(3) { transition-delay: 0.2s; }
.pokemon-detail-view.show #detail-content .stat-item:nth-child(4) { transition-delay: 0.25s; }
.pokemon-detail-view.show #detail-content .stat-item:nth-child(5) { transition-delay: 0.3s; }
.pokemon-detail-view.show #detail-content .stat-item:nth-child(6) { transition-delay: 0.35s; }

/* Moves list animation */
#detail-content .moves-list li {
    list-style: none;
    padding: 0.3rem;
    margin-bottom: 0.3rem;
    background-color: var(--background-color);
    border-radius: 4px;
    transform: translateY(20px);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.pokemon-detail-view.show #detail-content .moves-list li {
    transform: translateY(0);
    opacity: 1;
}

/* Progressive delay for moves - only first 10 to avoid overwhelming */
.pokemon-detail-view.show #detail-content .moves-list li:nth-child(1) { transition-delay: 0.1s; }
.pokemon-detail-view.show #detail-content .moves-list li:nth-child(2) { transition-delay: 0.15s; }
.pokemon-detail-view.show #detail-content .moves-list li:nth-child(3) { transition-delay: 0.2s; }
.pokemon-detail-view.show #detail-content .moves-list li:nth-child(4) { transition-delay: 0.25s; }
.pokemon-detail-view.show #detail-content .moves-list li:nth-child(5) { transition-delay: 0.3s; }

footer {
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
    font-size: 0.9em;
    border-top: 1px solid var(--header-background);
}

/* Utility for type colors - to be applied by JS */
.type-grass { background-color: var(--type-grass); }
.type-poison { background-color: var(--type-poison); }
.type-fire { background-color: var(--type-fire); }
.type-flying { background-color: var(--type-flying); }
.type-water { background-color: var(--type-water); }
.type-bug { background-color: var(--type-bug); }
.type-normal { background-color: var(--type-normal); }
.type-electric { background-color: var(--type-electric); }
.type-ground { background-color: var(--type-ground); }
.type-fairy { background-color: var(--type-fairy); }
.type-fighting { background-color: var(--type-fighting); }
.type-psychic { background-color: var(--type-psychic); }
.type-rock { background-color: var(--type-rock); }
.type-steel { background-color: var(--type-steel); }
.type-ice { background-color: var(--type-ice); }
.type-ghost { background-color: var(--type-ghost); }
.type-dragon { background-color: var(--type-dragon); }
.type-dark { background-color: var(--type-dark); }

/* Pokémon Sprite Shake Animation */
@keyframes pokemon-shake {
  0%, 100% { transform: translateX(0) rotate(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px) rotate(-3deg); }
  20%, 40%, 60%, 80% { transform: translateX(4px) rotate(3deg); }
}

.sprite-shake-animation {
  animation: pokemon-shake 1s ease-in-out;
}

/* Prevent body scroll when modal is open */
body.modal-open {
    overflow: hidden;
}

/* Add subtle glow effect to focused elements */
#close-detail-view:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(255, 59, 48, 0.2);
}

/* Improve accessibility for keyboard navigation */
.pokemon-card:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Add a subtle pulse animation for loading states */
@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip link for keyboard navigation */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--accent-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 10000;
    font-weight: bold;
}

.skip-link:focus {
    top: 6px;
}

/* Loading indicator */
.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    gap: 1rem;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--card-background);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Error states */
.error-container,
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
}

.error-message,
.empty-message {
    color: var(--accent-color);
    font-size: 1.1rem;
    margin: 0;
}

.global-error {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--accent-color);
    color: white;
    padding: 1rem;
    text-align: center;
    z-index: 10000;
    animation: slideDown 0.3s ease-out;
}

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

/* NoScript message */
.noscript-message {
    background: var(--card-background);
    border: 2px solid var(--accent-color);
    border-radius: 8px;
    padding: 2rem;
    margin: 2rem;
    text-align: center;
}

.noscript-message h2 {
    color: var(--accent-color);
    margin-top: 0;
}

/* Improved focus management */
.pokemon-card.focused {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --background-color-light: #ffffff;
        --text-color-light: #000000;
        --card-background-light: #ffffff;
        --header-background-light: #f0f0f0;
        
        --background-color-dark: #000000;
        --text-color-dark: #ffffff;
        --card-background-dark: #000000;
        --header-background-dark: #1a1a1a;
    }
    
    .pokemon-card:focus,
    #close-detail-view:focus,
    button:focus,
    input:focus {
        outline: 3px solid;
        outline-offset: 2px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .loading-spinner {
        animation: none;
        border-top-color: var(--accent-color);
    }
    
    .sprite-shake-animation {
        animation: none;
    }
}

/* Improved mobile accessibility */
@media (max-width: 768px) {
    .pokemon-card {
        min-height: 48px; /* Minimum touch target size */
    }
    
    button {
        min-height: 44px;
        min-width: 44px;
    }
    
    .skip-link:focus {
        font-size: 16px; /* Prevent zoom on mobile */
    }
}

/* Print styles */
@media print {
    .pokemon-detail-view,
    .loading-indicator,
    .toggles,
    .search-container {
        display: none !important;
    }
    
    .pokemon-card {
        break-inside: avoid;
        border: 1px solid #000;
        margin-bottom: 1rem;
    }
}

/* Keyboard navigation improvements */
button:focus-visible,
input:focus-visible,
.pokemon-card:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Announcement container for screen readers */
#announcements {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}