:root {
    --payne-gray: #646a78;
    --moonwalk: #bdbfc5;
    --antiflash-white: #e9eaec;
    --main-txt-color: #063e63;
    --marine: #063e63;
    --lapis-lazuli: #1766a3;
    --cornflower: #1c84d9;
    --blizzard: #b6ddfb;
    --salmon: #ff715b;
    --almond: #f6dbd0;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Header & Stats --- */
.hero {
    background-color: var(--marine);
    color: #fff;
    padding: 5rem 2rem;
    position: relative;
    overflow: hidden;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}
.hero-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
@media (min-width: 1024px) {
    .hero-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 4rem;
    }
}
.hero-text {
    flex: 1;
    max-width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.hero-text h1 {
    font-weight: 800;
    max-width: 100%;
    opacity: 0.9;
    margin-bottom: 0.5rem;
    text-align: left;
}
.hero-text .subtitle {
    font-size: 1.25rem;
    font-weight: 500;
    margin-top: 0;
    margin-bottom: 1rem;
    opacity: 0.9;
    line-height: 1.5;
    text-align: left;
}
.stats-group {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
    flex: 1;
    justify-content: flex-start;
}
@media (min-width: 1024px) {
    .stats-group {
        justify-content: flex-end;
    }
}
.stat-item .stat-value {
    color: var(--marine);
    font-size: 5rem;
    font-weight: 800;
    line-height: 1;
    display: block;
    transition: var(--transition);
}
.stat-item .stat-label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    opacity: 0.6;
    margin-top: 0.5rem;
    display: block;
}
.stat-item.highlight .stat-value {
    color: var(--salmon);
}
.basin-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}
.basin-tag {
    background: var(--salmon);
    color: #fff;
    border: 1px solid var(--salmon);
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: default;
    transition: var(--transition);
}
.basin-tag:hover {
    background: #fff;
    color: var(--salmon);
}

/* --- Map Section --- */
.map-section {
    padding: 4rem 2rem 2rem;
    background: #fff;
}
.map-layout {
    position: relative;
    height: 560px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--blizzard);
    box-shadow: 0 4px 24px rgba(6, 62, 99, 0.06);
}
.map-container {
    width: 100%;
    height: 100%;
    position: relative;
}

#leaflet-map {
    width: 100%;
    height: 560px;
    background: #d4e6f1;
}

/* Override Leaflet controls styling */
.leaflet-control-zoom a {
    background: var(--marine) !important;
    color: #fff !important;
    border: none !important;
    font-weight: 700;
}
.leaflet-control-zoom a:hover {
    background: var(--cornflower) !important;
}
.leaflet-control-zoom {
    border: none !important;
    border-radius: 10px !important;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12) !important;
}
.leaflet-control-attribution {
    font-size: 9px;
    opacity: 0.5;
}

/* Scroll Overlay */
.scroll-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(6, 62, 99, 0.3); /* var(--marine) with opacity */
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-overlay.visible {
    opacity: 1;
}

.scroll-overlay span {
    background: rgba(255, 255, 255, 0.95);
    color: var(--marine);
    padding: 0.8rem 1.5rem;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: "Montserrat", sans-serif;
    box-shadow:
        0 10px 40px rgba(6, 62, 99, 0.2),
        0 0 0 1px rgba(255, 255, 255, 0.5) inset;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transform: translateY(20px);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-overlay.visible span {
    transform: translateY(0);
}

.scroll-overlay kbd {
    background: var(--blizzard);
    color: var(--marine);
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-family: PFSquareSansProBold, monospace;
    font-size: 0.85rem;
    border: 1px solid rgba(28, 132, 217, 0.2);
    box-shadow: 0 2px 0 rgba(28, 132, 217, 0.15);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0 0.15rem;
}

/* Country markers */
.country-marker {
    background: none !important;
    border: none !important;
}

/* Side Panel */
.side-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: 360px;
    height: 100%;
    background: #fff;
    border-left: 1px solid var(--blizzard);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 500;
    box-shadow: -4px 0 20px rgba(6, 62, 99, 0.1);
    transform: translateX(0);
    transition:
        transform 0.3s ease,
        opacity 0.3s ease;
    opacity: 1;
}
.side-panel.collapsed {
    transform: translateX(100%);
    opacity: 0;
    pointer-events: none;
}
.panel-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--antiflash-white);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.panel-header h3 {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--marine);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.panel-header .country-flag {
    font-size: 1.3rem;
}
.panel-close {
    background: var(--antiflash-white);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    color: var(--payne-gray);
    transition: var(--transition);
    font-size: 1.1rem;
    font-weight: 700;
}
.panel-close:hover {
    background: var(--salmon);
    color: #fff;
}
.panel-count {
    padding: 0.5rem 1.5rem;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--payne-gray);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: var(--antiflash-white);
}
.panel-members {
    flex: 1;
    overflow-y: auto;
    padding: 0;
    overscroll-behavior: contain;
}
.panel-members::-webkit-scrollbar {
    width: 6px;
}
.panel-members::-webkit-scrollbar-thumb {
    background: var(--blizzard);
    border-radius: 3px;
}
.panel-members::-webkit-scrollbar-track {
    background: transparent;
}
.panel-category-group {
    border-bottom: 1px solid var(--antiflash-white);
}
.panel-category-title {
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--cornflower);
    padding: 1rem 1.5rem 0.4rem;
}
.panel-member {
    display: block;
    padding: 0.6rem 1.5rem;

    text-decoration: none;
    color: var(--marine);
    font-size: 0.9rem;
    font-weight: 500;
}
.panel-member:hover {
    background: var(--salmon);
    color: #fff;
}
.panel-empty {
    padding: 3rem 1.5rem;
    text-align: center;
    color: var(--moonwalk);
    font-size: 0.85rem;
}

/* --- Filters Below Map --- */
.filters-section {
    padding: 2rem 2rem 0;
}
.filters-row {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}
.filter-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.filter-label {
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--payne-gray);
    white-space: nowrap;
    min-width: 80px;
}
.filter-pills {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}
.filter-pill {
    background: #fff;
    color: var(--marine);
    border: 1.5px solid var(--blizzard);
    padding: 0.5rem 1.1rem;
    border-radius: 25px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
    font-family: "Montserrat", sans-serif;
}
.filter-pill:hover {
    border-color: var(--cornflower);
    color: var(--cornflower);
}
.filter-pill.active-type {
    background: var(--lapis-lazuli);
    color: #fff;
    border-color: var(--lapis-lazuli);
    box-shadow: 0 3px 10px rgba(23, 102, 163, 0.25);
}
.filter-pill.active-basin {
    background: var(--salmon);
    color: #fff;
    border-color: var(--salmon);
    box-shadow: 0 3px 10px rgba(255, 113, 91, 0.25);
}

/* --- Search inside map --- */
.map-search-wrapper {
    position: absolute;
    bottom: 2rem;
    left: 1.5rem;
    z-index: 400; /* Above map tiles, below side panel */
    width: 100%;
    max-width: 260px;
    box-shadow: 0 4px 20px rgba(6, 62, 99, 0.15);
    border-radius: 25px;
}
.search-input {
    width: 100%;
    padding: 0.6rem 1.25rem;
    background: #fff;
    border: 2px solid var(--blizzard);
    border-radius: 25px;
    font-size: 0.8rem;
    font-weight: 500;
    font-family: "Montserrat", sans-serif;
    outline: none;
    transition: var(--transition);
    color: var(--marine);
}
.search-input:focus {
    border-color: var(--cornflower);
    box-shadow: 0 0 0 4px rgba(28, 132, 217, 0.1);
}
.search-input::placeholder {
    color: var(--payne-gray);
    opacity: 0.7;
}

/* --- Content Sections --- */

.section-block + .section-block {
    margin-top: 0.75rem;
}
.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid var(--blizzard);
    padding: 1rem 0;
    margin-bottom: 0;
    margin-top: 0;
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
}
.section-header:hover {
    opacity: 0.8;
}
.section-block:first-child .section-header {
    margin-top: 0;
}
.section-icon {
    background: var(--antiflash-white);
    padding: 0.4rem;
    border-radius: 8px;
    color: var(--marine);
    display: flex;
    align-items: center;
    justify-content: center;
}
.section-icon i {
    width: 20px;
    height: 20px;
}
.section-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0rem;
    color: var(--marine);
}
.section-count {
    margin-left: auto;
    background: var(--almond);
    color: var(--salmon);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.section-chevron {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
    color: var(--payne-gray);
    flex-shrink: 0;
}
.section-header.collapsed .section-chevron {
    transform: rotate(-90deg);
}
.section-body {
    overflow: hidden;
    max-height: 5000px;
    transition:
        max-height 0.4s ease,
        opacity 0.3s ease,
        padding 0.3s ease;
    opacity: 1;
    padding: 1.5rem 0 2rem;
}
.section-body.collapsed {
    max-height: 0;
    opacity: 0;
    padding: 0;
}

.partners-grid {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 2rem;
}

.partner-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-decoration: none;
    color: inherit;
    flex: 1 1 calc(50% - 1rem);
    min-width: 300px;
    padding: 1.5rem 0;
    position: relative;
}

.partner-line::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: #e5e7eb;
}

.partner-line::before {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--marine);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.19, 1, 0.22, 1);
    z-index: 1;
}

.partner-line:hover::before {
    transform: scaleX(1);
}

.partner-name {
    font-weight: 500;
    font-size: 1.2rem;
    color: #111;
    letter-spacing: -0.01em;
    transition:
        transform 0.5s cubic-bezier(0.19, 1, 0.22, 1),
        color 0.3s ease;
}

.partner-line:hover .partner-name {
    transform: translateX(12px);
    color: var(--marine);
}

.partner-country {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    color: #6b7280;
    border: 1px solid #e5e7eb;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    transition: all 0.4s ease;
}

.partner-line:hover .partner-country {
    background: var(--marine);
    color: #fff;
    border-color: var(--marine);
}

.subcategory-container {
    margin-top: 3rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}
@media (min-width: 1024px) {
    .subcategory-container {
        grid-template-columns: 1fr 1fr;
    }
}
.subcategory-block h3 {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--cornflower);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.subcategory-block h3::before {
    content: "+";
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border: 2px solid var(--salmon);
    color: var(--salmon);
    border-radius: 50%;
    font-size: 12px;
}

/* --- Footer --- */
footer {
    background: var(--marine);
    color: #fff;
    padding: 4rem 2rem;
    text-align: center;
}
.footer-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 4rem;
}
.cta-btn {
    background: var(--salmon);
    color: #fff;
    border: 1px solid var(--salmon);
    padding: 1rem 2.5rem;
    border-radius: 30px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: var(--transition);
    font-family: "Montserrat", sans-serif;
}
.cta-btn:hover {
    background: #fff;
    color: var(--salmon);
}
.copyright {
    font-size: 0.7rem;
    opacity: 0.4;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
}

/* --- Empty State --- */
#empty-state {
    display: none;
    text-align: center;
    padding: 5rem 2rem;
    background: var(--antiflash-white);
    border-radius: 30px;
    border: 2px dashed var(--blizzard);
    margin: 2rem 0;
}
#empty-state i {
    font-size: 3rem;
    color: var(--moonwalk);
    margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 900px) {
    .side-panel {
        width: 100% !important;
        height: 60% !important;
        top: auto !important;
        bottom: 0;
        right: 0;
        border-left: none;
        border-top: 1px solid var(--blizzard);
        box-shadow: 0 -4px 20px rgba(6, 62, 99, 0.1);
        transform: translateY(0);
    }
    .side-panel.collapsed {
        transform: translateY(100%);
    }
}

@media (max-width: 768px) {
    .hero-content {
        align-items: flex-start;
        text-align: left;
    }
    .stats-group {
        gap: 1.5rem;
        justify-content: flex-start;
        flex-direction: row;
        width: 100%;
    }
    .stat-item .stat-value {
        font-size: 3.5rem;
    }
    .hero-text h1 {
        font-size: 2rem;
    }
    .hero-text .subtitle {
        font-size: 1.1rem;
        margin-bottom: 2rem;
    }
}