/* CSS Variables */
:root {
    --color-bg: #87d2d3;
    --color-primary-dark: #363636;
    --color-accent: #F66095;
    --color-white: #ffffff;
    --radius-sm: 4px;
    --focus-ring: 2px solid var(--color-primary-dark);
    --transition-fast: 0.2s ease;
}

/* Performance: Use system font stack as fallback while custom font loads */
body {
    padding-top: 56px;
    background-color: var(--color-bg);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

/* Reduce paint complexity */
* {
    -webkit-tap-highlight-color: transparent;
}

/* Remove focus outlines on mouse clicks (keep them for keyboard navigation) */
*:focus:not(:focus-visible) {
    outline: none;
}

/* Optimize rendering */
img {
    max-width: 100%;
    height: auto;
}

/* Skip link for keyboard accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary-dark);
    color: var(--color-white);
    padding: 8px;
    text-decoration: none;
    z-index: 100;
    border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus-visible {
    top: 0;
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

nav {
    background-color: var(--color-primary-dark);
}

.navbar-icon {
    border: 1px solid #ffffff;
    border-radius: 50%;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

a:hover .navbar-icon {
    transform: scale(1.05);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.8);
}

.navbar-brand,
.navbar-brand:hover {
    color: var(--color-white);
    text-decoration: none;
    font-family: "Grandstander", cursive;
    font-optical-sizing: auto;
    font-weight: 800;
    font-style: normal;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.navbar-brand:hover {
    transform: scale(1.02);
    filter: drop-shadow(0 2px 8px rgba(255, 255, 255, 0.3));
}

.navbar-toggler {
    border-color: #ffffff;
    transition: background-color 0.2s ease, transform 0.2s ease;
    position: relative;
}

.navbar-toggler:hover:not(:active) {
    background-color: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

.navbar-toggler:active {
    transform: scale(0.95);
}

.navbar-toggler:focus-visible {
    outline: var(--focus-ring);
    outline-offset: 2px;
    box-shadow: none;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(255, 255, 255, 1.0)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 8h24M4 16h24M4 24h24'/%3E%3C/svg%3E");
    transition: background-image 0.3s ease;
}

/* Animated hamburger icon transformation - X icon when expanded */
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(255, 255, 255, 1.0)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M8 8 L24 24 M24 8 L8 24'/%3E%3C/svg%3E");
}

#navbar-collapse-section {
    color: var(--color-white);
    transition: height 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
}

#navbar-collapse-section.collapsing {
    opacity: 0;
}

#navbar-collapse-section.show {
    opacity: 1;
}

/* Staggered fade-in for menu items */
#navbar-collapse-section .row > * {
    opacity: 0;
    transform: translateY(-10px);
}

#navbar-collapse-section.show .row > * {
    animation: fadeInUp 0.4s ease forwards;
}

#navbar-collapse-section.show .col-md-4:nth-child(1),
#navbar-collapse-section.show .col-12:nth-child(1) {
    animation-delay: 0.1s;
}

#navbar-collapse-section.show .col-md-4:nth-child(2),
#navbar-collapse-section.show .col-12:nth-child(2) {
    animation-delay: 0.15s;
}

#navbar-collapse-section.show .col-md-4:nth-child(3),
#navbar-collapse-section.show .col-12:nth-child(3) {
    animation-delay: 0.2s;
}

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

.nav-profile-link {
    color: var(--color-white);
    opacity: 0.9;
    transition: opacity 0.2s ease, transform 0.2s ease;
    position: relative;
    display: inline-block;
}

.nav-profile-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-white);
    transition: width 0.3s ease;
}

.nav-profile-link:hover {
    opacity: 1;
}

.nav-profile-link:hover::after {
    width: 100%;
}

.nav-profile-link:active {
    transform: scale(0.98);
}

.nav-profile-link-primary {
    opacity: 1;
    font-weight: 500;
}

.nav-profile-link:focus-visible {
    outline: var(--focus-ring);
    outline-offset: 2px;
    border-radius: 2px;
}

.nav-profile-info {
    color: var(--color-white);
    opacity: 0.85;
    font-size: 0.875rem;
    margin-bottom: 0;
}

.nav-profile-container {
    display: flex;
    flex-direction: column;
}

.nav-profile-links {
    margin-top: auto;
}

.nav-about-heading,
.nav-contact-heading {
    color: var(--color-white);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

/* Collapsible About and Contact button styling */
button[data-bs-toggle="collapse"][data-bs-target="#about-collapse"],
button[data-bs-toggle="collapse"][data-bs-target="#contact-collapse"] {
    color: var(--color-white) !important;
    transition: opacity var(--transition-fast);
}

button[data-bs-toggle="collapse"][data-bs-target="#about-collapse"]:hover,
button[data-bs-toggle="collapse"][data-bs-target="#contact-collapse"]:hover {
    opacity: 0.85;
}

button[data-bs-toggle="collapse"][data-bs-target="#about-collapse"]:focus-visible,
button[data-bs-toggle="collapse"][data-bs-target="#contact-collapse"]:focus-visible {
    outline: var(--focus-ring);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Rotate chevrons when expanded */
button[data-bs-toggle="collapse"][data-bs-target="#about-collapse"][aria-expanded="true"] .about-chevron,
button[data-bs-toggle="collapse"][data-bs-target="#contact-collapse"][aria-expanded="true"] .contact-chevron {
    transform: rotate(180deg);
}

button[data-bs-toggle="collapse"][data-bs-target="#about-collapse"] .about-chevron,
button[data-bs-toggle="collapse"][data-bs-target="#contact-collapse"] .contact-chevron {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Borders between navbar sections */
/* Desktop (md and above): right borders between profile, about, and contact */
@media (min-width: 768px) {
    /* Profile section - right border with inset margins */
    #navbar-collapse-section .row > .col-md-4:not(.d-none) {
        position: relative;
    }
    #navbar-collapse-section .row > .col-md-4:not(.d-none)::after {
        content: '';
        position: absolute;
        top: 0.75rem;
        bottom: 0.75rem;
        right: 1rem;
        width: 1px;
        background-color: rgba(255, 255, 255, 0.2);
        opacity: 0;
        transition: opacity 0.4s ease 0.2s;
    }
    
    #navbar-collapse-section.show .row > .col-md-4:not(.d-none)::after {
        opacity: 1;
    }
    
    /* About section - right border with inset margins (4th child is the desktop About section) */
    #navbar-collapse-section .row > .col-md-4.d-none.d-md-block:nth-child(4) {
        position: relative;
    }
    #navbar-collapse-section .row > .col-md-4.d-none.d-md-block:nth-child(4)::after {
        content: '';
        position: absolute;
        top: 0.75rem;
        bottom: 0.75rem;
        right: 1rem;
        width: 1px;
        background-color: rgba(255, 255, 255, 0.2);
        opacity: 0;
        transition: opacity 0.4s ease 0.2s;
    }
    
    #navbar-collapse-section.show .row > .col-md-4.d-none.d-md-block:nth-child(4)::after {
        opacity: 1;
    }
}

/* Mobile: top borders on about and contact sections with inset margins */
#navbar-collapse-section .row > .col-12.d-md-none {
    position: relative;
}
#navbar-collapse-section .row > .col-12.d-md-none::before {
    content: '';
    position: absolute;
    top: 0;
    left: 1rem;
    right: 1rem;
    height: 1px;
    background-color: rgba(255, 255, 255, 0.2);
    opacity: 0;
    transition: opacity 0.4s ease 0.2s;
}

#navbar-collapse-section.show .row > .col-12.d-md-none::before {
    opacity: 1;
}

/* Search bar container - unified styling */
.input-group#search-input-group {
    border-radius: 4px;
    border: 1px solid #ced4da;
    transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
    overflow: hidden; /* Ensure border radius is applied correctly */
    display: flex;
    align-items: stretch; /* Ensure all child elements have same height */
}

/* When input is focused, highlight the entire group */
#search-input-group.input-focused,
#search-input-group:has(#search-bar:focus),
#search-input-group:has(#search-bar:focus-visible) {
    border-color: var(--color-primary-dark);
    box-shadow: 0 0 0 3px rgba(54, 54, 54, 0.15), 0 2px 8px rgba(54, 54, 54, 0.1);
    transform: translateY(-1px);
}

/* Input styling - no individual border/outline */
#search-bar {
    border: none;
    border-radius: 4px;
}

.form-control#search-bar:focus-visible {
    outline: none !important;
    box-shadow: none !important;
}

/* Smooth input placeholder transition */
#search-bar::placeholder {
    transition: opacity 0.3s ease;
}

#search-bar:focus::placeholder {
    opacity: 0.5;
}

/* When clear button is visible, adjust input border radius */
#search-bar.clear-visible {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

#clear-button {
    display: none; /* JavaScript controls visibility - sets to 'flex' when visible */
    background-color: white;
    border: none;
    border-left: 1px solid #ced4da;
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
    min-height: 44px; /* Match input height for consistency */
    /* Flex properties apply when JavaScript sets display: flex */
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.2s ease;
}

#clear-button.clear-button-visible,
#clear-button[style*="flex"] {
    opacity: 1;
    transform: scale(1);
}

#clear-button:hover, #clear-button:active {
    color: currentColor;
    background-color: #f8f9fa;
}

#clear-button:focus-visible {
    outline: 2px solid var(--color-primary-dark);
    outline-offset: -2px;
}

.ingredients-dropdown-list {
    max-height: 200px;
    overflow-y: auto;
    padding-bottom: 0px;
}

/* Better focus indicators for checkboxes */
.dropdown-filter-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.dropdown-filter-checkbox:hover {
    transform: scale(1.1);
}

.dropdown-filter-checkbox:checked {
    animation: checkboxCheck 0.3s ease;
}

@keyframes checkboxCheck {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

.dropdown-filter-checkbox:focus-visible {
    outline: var(--focus-ring);
    outline-offset: 2px;
}

.dropdown-filter-item label {
    cursor: pointer;
    padding-left: 8px;
    user-select: none;
    transition: color 0.2s ease, transform 0.2s ease;
    display: inline-block;
}

.dropdown-filter-item:hover label {
    color: var(--color-primary-dark);
    transform: translateX(4px);
}

.clear-filter-button-and-divider {
    display: none;
    position: sticky;
    bottom: 0;
    background: white;
    z-index: 1;
    text-align: center;
    padding-bottom: 8px;
}

/* Staggered card animations */
#results .drink {
    opacity: 0;
    transform: translateY(20px);
    animation: slideUpFade 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

#results .drink:nth-child(1) { animation-delay: 0.05s; }
#results .drink:nth-child(2) { animation-delay: 0.1s; }
#results .drink:nth-child(3) { animation-delay: 0.15s; }
#results .drink:nth-child(4) { animation-delay: 0.2s; }
#results .drink:nth-child(5) { animation-delay: 0.25s; }
#results .drink:nth-child(6) { animation-delay: 0.3s; }
#results .drink:nth-child(7) { animation-delay: 0.35s; }
#results .drink:nth-child(8) { animation-delay: 0.4s; }
#results .drink:nth-child(9) { animation-delay: 0.45s; }
#results .drink:nth-child(n+10) { animation-delay: 0.5s; }

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

@keyframes fadeInOpacity {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

.card {
    border-radius: 0%;
    border: 0;
}

.card-img-wrapper {
    position: relative;
    width: 100%;
}

.card-img-top {
    border-radius: 0%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    /* Optimize image rendering */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    width: 100%;
    display: block;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                filter 0.3s ease;
}

#drinks .card:hover .card-img-top {
    transform: scale(1.02);
    filter: brightness(1.03);
}

/* Enhanced card hover effects */
.card {
    opacity: 1;
    transition: opacity 0.3s;
}

#drinks .card {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.3s ease;
    cursor: pointer;
}

#drinks .card:hover {
    transform: translateY(-2px) scale(1.01);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.12);
    opacity: 1;
}

#drinks .card:active {
    transform: translateY(-1px) scale(1);
}

/* Focus indicator for card links */
.card a:focus-visible {
    outline: 3px solid var(--color-primary-dark);
    outline-offset: 3px;
}

.card a:focus-visible img {
    opacity: 0.9;
}

.no-match-text-container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 60px 20px;
    min-height: 40vh;
}

.no-match-content {
    text-align: center;
    max-width: 500px;
    opacity: 0;
    animation-name: fadeInOpacity;
    animation-iteration-count: 1;
    animation-timing-function: ease-in;
    animation-duration: 0.6s;
    animation-fill-mode: forwards;
}

/* Enhanced no-match state */
.no-match-icon {
    color: var(--color-primary-dark);
    opacity: 0;
    margin-bottom: 24px;
    display: block;
    margin-left: auto;
    margin-right: auto;
    overflow: visible;
    animation: bounceIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3) translateY(-20px);
    }
    50% {
        opacity: 1;
        transform: scale(1.1) translateY(0);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.no-match-heading {
    color: var(--color-primary-dark);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
    opacity: 0;
    animation: fadeInUp 0.5s ease 0.3s forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.no-match-suggestion {
    color: var(--color-primary-dark);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 0;
    opacity: 0;
    animation: fadeInUp 0.5s ease 0.5s forwards;
}

.no-match-accent {
    color: var(--color-accent);
    font-weight: 500;
}

footer {
    background-color: var(--color-primary-dark);
}

.footer-icon {
    border: 1px solid #ffffff;
    border-radius: 50%;
}

.footer-text {
    color: var(--color-white);
}

/* Enhanced tab navigation */
.nav-tabs .nav-link {
    position: relative;
    transition: color 0.3s ease, background-color 0.3s ease;
    border: none;
    border-bottom: 2px solid transparent;
    padding-bottom: 0.5rem;
    color: var(--color-primary-dark);
    text-decoration: none;
}

.nav-tabs .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width 0.3s ease;
}

.nav-tabs .nav-link:hover {
    color: var(--color-primary-dark);
    background-color: rgba(54, 54, 54, 0.05);
    border-bottom-color: transparent;
}

.nav-tabs .nav-link:hover::after {
    width: 50%;
}

.nav-tabs .nav-link.active {
    color: var(--color-primary-dark);
    font-weight: 600;
    border-bottom-color: transparent;
}

.nav-tabs .nav-link.active::after {
    width: 100%;
    background-color: var(--color-accent);
    animation: underlineSlide 0.3s ease;
}

@keyframes underlineSlide {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

.nav-link,
.nav-link:hover {
    color: var(--color-primary-dark);
    text-decoration: none;
}

.nav-link:focus-visible {
    outline: var(--focus-ring);
    outline-offset: 2px;
}

/* Tab content transitions */
.tab-pane {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.tab-pane.active {
    opacity: 1;
    transform: translateY(0);
    animation: tabContentFadeIn 0.4s ease;
}

@keyframes tabContentFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.svg-icon-link {
    text-decoration: none;
    padding-right: 10px;
}

.svg-icon-link:hover .svg-icon {
    transform: scale(1.25) translateY(-2px);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.svg-icon-link:active .svg-icon {
    transform: scale(1.1);
}

.svg-icon-link:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
    border-radius: 4px;
}

.svg-icon-link-dark {
    color: var(--color-primary-dark);
}

.svg-icon-link-light {
    color: var(--color-white);
}

.svg-icon {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
}

/* Similar drinks section */
.similar-drinks-heading {
    color: var(--color-primary-dark);
    font-size: 20px;
    opacity: 0;
    transform: translateY(-10px);
    animation: fadeInDown 0.5s ease 0.2s forwards;
}

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

#similar-drinks-container .drink {
    opacity: 0;
    transform: scale(0.95);
    animation: scaleIn 0.4s ease forwards;
}

#similar-drinks-container .drink:nth-child(1) { animation-delay: 0.3s; }
#similar-drinks-container .drink:nth-child(2) { animation-delay: 0.35s; }
#similar-drinks-container .drink:nth-child(3) { animation-delay: 0.4s; }
#similar-drinks-container .drink:nth-child(4) { animation-delay: 0.45s; }
#similar-drinks-container .drink:nth-child(5) { animation-delay: 0.5s; }
#similar-drinks-container .drink:nth-child(n+6) { animation-delay: 0.55s; }

@keyframes scaleIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.drink-name-highlight {
    color: var(--color-accent);
}

/* Enhanced link hover effects */
.recipe-link,
.image-source-link {
    position: relative;
    color: var(--color-primary-dark);
    text-decoration: none;
    transition: color 0.3s ease;
}

.recipe-link::after,
.image-source-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width 0.3s ease;
}

.recipe-link:hover,
.image-source-link:hover {
    color: var(--color-accent);
}

.recipe-link:hover::after,
.image-source-link:hover::after {
    width: 100%;
}

/* Card content animations */
.card-body {
    animation: fadeInUp 0.5s ease 0.2s both;
}

.list-group-item {
    opacity: 0;
    transform: translateX(-10px);
    animation: slideInLeft 0.4s ease forwards;
}

.list-group-item:nth-child(1) { animation-delay: 0.1s; }
.list-group-item:nth-child(2) { animation-delay: 0.2s; }
.list-group-item:nth-child(3) { animation-delay: 0.3s; }
.list-group-item:nth-child(4) { animation-delay: 0.4s; }
.list-group-item:nth-child(n+5) { animation-delay: 0.5s; }

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Search bar, filter, and sort - consistent sizing and alignment */
.search-bar-input-group {
    min-height: 44px; /* Ensure minimum touch target size */
}

#search-bar {
    min-height: 44px; /* Match button heights */
}

/* Ensure dropdown containers are positioned correctly */
.dropdown {
    position: relative;
}

#filter-button,
#sort-button {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    min-height: 44px; /* Ensure minimum touch target size */
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease, transform 0.2s ease;
    position: relative;
}

#filter-button:hover,
#sort-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

#filter-button:active,
#sort-button:active {
    transform: translateY(0);
}

/* Consistent height for all search controls */
.search-control-button {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#filter-button:focus-visible,
#sort-button:focus-visible {
    outline: var(--focus-ring);
    outline-offset: 2px;
}

/* Search bar row - reduce spacing when stacked */
.search-bar-row {
    --row-gap-small: 0.25rem; /* Reduced gap between rows on small screens */
}

/* Filters accordion button styling */
.filters-accordion-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 4px 8px !important;
    transition: all 0.3s ease, transform 0.2s ease;
    border: none !important;
    background-color: transparent !important;
    color: var(--color-primary-dark) !important;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.filters-accordion-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(54, 54, 54, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.filters-accordion-button:hover::before {
    width: 200px;
    height: 200px;
}

.filters-accordion-button:hover,
.filters-accordion-button:active,
.filters-accordion-button:focus {
    background-color: transparent !important;
    color: var(--color-primary-dark) !important;
    border: none !important;
}

.filters-accordion-button:active {
    transform: scale(0.95);
}

.filters-accordion-button:focus-visible {
    outline: var(--focus-ring);
    outline-offset: 2px;
}

/* Border above filters section on small screens */
@media (max-width: 991.98px) {
    /* Add border above the filters button container with inset margins */
    .filters-accordion-container {
        margin-top: 0.25rem;
        padding-top: 0.5rem !important;
        padding-bottom: 0.5rem !important;
        padding-left: 1rem;
        padding-right: 1rem;
        position: relative;
    }
    
    .filters-accordion-container::before {
        content: '';
        position: absolute;
        top: 0;
        left: 1rem;
        right: 1rem;
        height: 1px;
        background-color: rgba(54, 54, 54, 0.2);
    }
}

.filters-chevron {
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    width: 14px;
    height: 14px;
}

.filters-accordion-button[aria-expanded="true"] .filters-chevron {
    transform: rotate(180deg);
}

/* On large screens, always show filters collapse (override Bootstrap collapse) */
@media (min-width: 992px) {
    #filters-collapse {
        display: block !important;
        height: auto !important;
        visibility: visible !important;
    }
    
    /* Remove collapse wrapper styling on large screens */
    .filters-collapse-wrapper {
        padding: 0;
    }
    
    /* On large screens, make inner row use flexbox to align buttons horizontally */
    #filters-collapse .row {
        display: flex !important;
        flex-wrap: nowrap !important;
    }
    
    /* On large screens, adjust column widths inside collapse - equal width for all three columns */
    #filters-collapse .dropdown.col-lg-4,
    #filters-collapse .col-lg-4 {
        flex: 0 0 calc(4/12 * 100%) !important;
        max-width: calc(4/12 * 100%) !important;
    }
    
    /* On large screens, all controls on one row - ensure proper alignment */
    #search-bar-form,
    .dropdown.col-lg-4,
    .col-lg-4 {
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
    }
    
    #search-input-group,
    #filter-button,
    #sort-button {
        flex: 1 0 auto;
    }
}

/* Responsive adjustments for search bar controls */
@media (max-width: 991.98px) {
    /* On small/medium screens when stacked, reduce spacing between rows */
    #search-bar-form {
        padding-bottom: var(--row-gap-small);
    }
    
    .dropdown.col-6 {
        padding-top: var(--row-gap-small);
    }
}

.hidden {
    display: none;
}

/* Visually hidden class for screen readers */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Animated dropdown menus */
.dropdown-menu {
    animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(-10px);
    animation-fill-mode: forwards;
    top: 100% !important;
    left: auto !important;
    right: auto !important;
    margin-top: 0.125rem;
    z-index: 1000;
    position: absolute;
}

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

/* Staggered dropdown items */
.dropdown-item {
    opacity: 0;
    transform: translateX(-10px);
    animation: slideInItem 0.3s ease forwards;
}

.dropdown-item:nth-child(1) { animation-delay: 0.05s; }
.dropdown-item:nth-child(2) { animation-delay: 0.1s; }
.dropdown-item:nth-child(3) { animation-delay: 0.15s; }
.dropdown-item:nth-child(4) { animation-delay: 0.2s; }
.dropdown-item:nth-child(5) { animation-delay: 0.25s; }
.dropdown-item:nth-child(n+6) { animation-delay: 0.3s; }

@keyframes slideInItem {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Active sort item indicator */
.dropdown-sort-item.active {
    background-color: rgba(54, 54, 54, 0.25) !important;
    color: var(--color-primary-dark) !important;
    font-weight: 600;
    position: relative;
    padding-left: 2rem;
}

.dropdown-sort-item.active::before {
    content: '✓';
    position: absolute;
    left: 0.75rem;
    font-weight: bold;
    color: var(--color-primary-dark);
    animation: checkmarkAppear 0.3s ease;
}

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

/* Ensure dropdown menu items have proper focus */
.dropdown-item:focus-visible {
    outline: var(--focus-ring);
    outline-offset: -2px;
}

/* Enhanced carousel controls */
.carousel.slide {
    overflow: hidden;
    position: relative;
}

.carousel-control-prev,
.carousel-control-next {
    transition: opacity 0.3s ease, background-color 0.3s ease, transform 0.3s ease;
    opacity: 0.7;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(54, 54, 54, 0.5);
    backdrop-filter: blur(4px);
    top: 50%;
    margin-top: -25px;
    transform: translateY(0);
    transform-origin: center center;
    z-index: 1;
}

.carousel-control-prev {
    left: 10px;
}

.carousel-control-next {
    right: 10px;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
    opacity: 1;
    background: rgba(54, 54, 54, 0.8);
    transform: scale(1.08);
}

.carousel-control-prev:active,
.carousel-control-next:active {
    transform: scale(0.98);
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    transition: opacity 0.3s ease;
}

.carousel-control-prev:hover .carousel-control-prev-icon,
.carousel-control-next:hover .carousel-control-next-icon {
    opacity: 1;
}

.carousel-control-prev:focus-visible,
.carousel-control-next:focus-visible {
    outline: 3px solid var(--color-primary-dark);
    outline-offset: 0;
}

/* Enhanced carousel indicators */
.carousel-indicators button {
    transition: all 0.3s ease, transform 0.3s ease;
    opacity: 0.5;
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.carousel-indicators button:hover {
    opacity: 0.75;
    transform: scale(1.2);
}

.carousel-indicators button.active {
    opacity: 1;
    transform: scale(1.3);
    animation: indicatorActive 0.3s ease;
}

@keyframes indicatorActive {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.5);
    }
    100% {
        transform: scale(1.3);
    }
}

/* Enhanced carousel slide transitions */
.carousel-item {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-item img {
    transition: opacity 0.2s ease;
    opacity: 0;
    /* Ensure images start loading immediately */
    content-visibility: auto;
}

.carousel-item.active img {
    opacity: 1;
    animation: imageFadeIn 0.3s ease;
}

/* Show images that are loaded even if not active yet */
.carousel-item img.loaded {
    opacity: 1;
}

.carousel-item.active img.loaded {
    opacity: 1;
    animation: none;
}

@keyframes imageFadeIn {
    from {
        opacity: 0;
        filter: blur(3px);
    }
    to {
        opacity: 1;
        filter: blur(0);
    }
}

/* Custom Scrollbar (non-intrusive) */
/* Applies where overflow appears, e.g., ingredients list */
.ingredients-dropdown-list::-webkit-scrollbar {
    width: 10px;
}

.ingredients-dropdown-list::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
}

.ingredients-dropdown-list::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
}

.ingredients-dropdown-list::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}

/* Print styles */
@media print {
    nav, footer, .navbar, .nav, .dropdown-menu { display: none !important; }
    body { background: #ffffff !important; }
    .card { box-shadow: none !important; border: 0 !important; }
    img { max-width: 100% !important; height: auto !important; }
}

/* Performance optimizations */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* GPU acceleration for animations */
.card,
.svg-icon,
#results .drink,
#navbar-collapse-section,
.navbar-toggler,
.filters-accordion-button,
#clear-button,
.dropdown-menu,
#drinks .card,
.carousel-control-prev,
.carousel-control-next,
.nav-tabs .nav-link,
.detail-heart-clickable,
.tab-pane,
#similar-drinks-container .drink {
    will-change: transform, opacity;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* Optimize font rendering */
body,
.navbar-brand {
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Contain layout shifts */
.card {
    contain: layout;
}

.card-img-top {
    contain: paint;
}


/* UX: Loading state for results (does not change grid) */
#results.htmx-swapping {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
    transition: opacity 0.3s ease;
}

#results.htmx-swapping::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 4px solid var(--color-primary-dark);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* UX: Infinite scroll loading indicator */
#infinite-scroll-container.htmx-request::after {
    content: '';
    display: block;
    width: 30px;
    height: 30px;
    margin: 20px auto;
    border: 3px solid var(--color-primary-dark);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite, fadeIn 0.3s ease;
}

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

/* UX: Image error states */
.card-img-top {
    background: linear-gradient(135deg, #e0e0e0 25%, #f5f5f5 25%, #f5f5f5 50%, #e0e0e0 50%, #e0e0e0 75%, #f5f5f5 75%, #f5f5f5);
    background-size: 20px 20px;
}

.card-img-top.error {
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 14px;
    text-align: center;
    padding: 20px;
}

/* UX: Button micro-feedback */
.btn { transition: transform var(--transition-fast); }
.btn:active { transform: scale(0.98); }

/* Favorite heart overlay */
.favorite-heart-overlay {
    position: absolute;
    bottom: 8px;
    left: 8px;
    width: 24px;
    height: 24px;
    fill: #dc3545;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    z-index: 1;
    pointer-events: none;
    opacity: 0;
    animation: heartFadeIn 0.4s ease 0.2s forwards, heartPulse 0.6s ease 0.6s;
}

@keyframes heartFadeIn {
    to {
        opacity: 1;
    }
}

@keyframes heartPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.15);
    }
}

/* Detail page heart overlay - separate from index page styles */
.detail-img-wrapper {
    position: relative;
    width: 100%;
}

.detail-heart-overlay {
    position: absolute;
    bottom: 8px;
    left: 8px;
    width: 24px;
    height: 24px;
    z-index: 1;
    pointer-events: none;
    overflow: visible;
}

.detail-heart-overlay use {
    overflow: visible;
}

.heart-wrapper {
    position: absolute;
    bottom: 8px;
    left: 8px;
    width: 24px;
    height: 24px;
    z-index: 10;
    overflow: visible;
    pointer-events: auto;
}

.heart-wrapper .detail-heart-overlay {
    position: static;
}

/* Make heart-wrapper links behave like non-link heart wrappers */
a.heart-wrapper {
    text-decoration: none;
    color: inherit;
}

/* Enhanced heart icon on detail page */
.detail-heart-clickable {
    pointer-events: all;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.detail-heart-clickable:hover {
    transform: scale(1.15);
}

.detail-heart-clickable:active {
    transform: scale(0.9);
    animation: heartBeat 0.4s ease;
}

@keyframes heartBeat {
    0%, 100% {
        transform: scale(0.9);
    }
    50% {
        transform: scale(1.2);
    }
}

/* Favorite toggle animations */
.detail-heart-filled {
    animation: favoriteToggle 0.5s ease;
}

.detail-heart-unfilled {
    animation: unfavoriteToggle 0.5s ease;
}

@keyframes favoriteToggle {
    0% {
        transform: scale(1);
    }
    30% {
        transform: scale(1.3);
    }
    60% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes unfavoriteToggle {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(0.8);
        opacity: 0.7;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.detail-heart-filled {
    fill: #dc3545;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.detail-heart-unfilled {
    fill: none;
    stroke: #ffffff;
    stroke-width: 1.5px;
    stroke-linejoin: round;
    stroke-linecap: round;
    shape-rendering: geometricPrecision;
    vector-effect: non-scaling-stroke;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
    overflow: visible;
}

/* Favorites checkbox styling - no border or background */
.favorites-checkbox-label {
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--color-primary-dark);
    transition: all 0.3s ease, transform 0.2s ease;
    padding: 4px 8px;
    border-radius: 4px;
}

.favorites-checkbox-label:hover {
    background-color: rgba(54, 54, 54, 0.05);
    transform: scale(1.05);
}

.favorites-checkbox-label:active {
    transform: scale(0.98);
}

.favorites-checkbox:checked ~ * {
    animation: favoriteChecked 0.3s ease;
}

@keyframes favoriteChecked {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.15);
    }
}

.favorites-checkbox {
    cursor: pointer;
    margin: 0;
    transition: transform 0.2s ease;
}

.favorites-checkbox:focus-visible {
    outline: var(--focus-ring);
    outline-offset: 2px;
}