#brt-root {
    --c1: #0891b2;
    --c2: #0e7490;
    --c3: #06b6d4;
    --c4: #ecfeff;
    --bg: #ffffff;
    --bg2: #f8fafc;
    --bg3: #f1f5f9;
    --tx: #0f172a;
    --tx2: #475569;
    --tx3: #94a3b8;
    --bd: #e2e8f0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--tx);
    border-radius: 16px;
    padding: 32px 28px 24px;
    margin: 0 auto 30px;
    max-width: 100%;
    line-height: 1.5;
    border: 1px solid var(--bd);
    box-shadow: 0 1px 3px rgba(0,0,0,.04), 0 6px 24px rgba(0,0,0,.03);
}

#brt-root *,
#brt-root *::before,
#brt-root *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

#brt-root img {
    max-width: none;
    display: inline-block;
}

/* Header */
#brt-root .brt-header {
    text-align: center;
    margin-bottom: 24px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--bd);
}

.brt-title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.brt-title-flag {
    border-radius: 3px;
    box-shadow: 0 1px 3px rgba(0,0,0,.15);
}

.brt-title {
    font-size: 21px;
    font-weight: 800;
    color: var(--tx);
    letter-spacing: -.3px;
}

.brt-tag {
    font-size: 10px;
    font-weight: 700;
    color: var(--c2);
    background: var(--c4);
    padding: 4px 12px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: .8px;
    border: 1px solid #a5f3fc;
}

#brt-root .brt-sub {
    color: var(--tx2);
    font-size: 13.5px;
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.65;
    text-align: center;
}

/* Converter */
.brt-converter {
    background: var(--bg2);
    border-radius: 14px;
    padding: 22px 20px 18px;
    max-width: 100%;
    margin: 0 auto;
}

#brt-root .brt-box {
    background: var(--bg);
    border: 2px solid var(--bd);
    border-radius: 12px;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    transition: border-color .2s, box-shadow .2s;
    overflow: visible;
}

#brt-root .brt-box:focus-within {
    border-color: var(--c1);
    box-shadow: 0 0 0 3px rgba(8, 145, 178, .08);
}

.brt-flag-img {
    border-radius: 4px;
    object-fit: cover;
    flex-shrink: 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .12);
}

#brt-root .brt-box .brt-flag-img {
    width: 32px;
    height: 22px;
    border-radius: 3px;
}

.brt-field {
    flex: 1;
    min-width: 0;
}

.brt-label {
    display: block;
    font-size: 10px;
    color: var(--tx3);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
    margin-bottom: 2px;
}

.brt-field input {
    background: transparent;
    border: 0;
    outline: 0;
    color: var(--tx);
    font-size: 26px;
    font-weight: 700;
    width: 100%;
    font-family: inherit;
}

.brt-field input::placeholder {
    color: var(--tx3);
}

.brt-code {
    font-size: 14px;
    font-weight: 700;
    color: var(--tx2);
    background: var(--bg3);
    padding: 6px 12px;
    border-radius: 8px;
    border: none;
    letter-spacing: .5px;
}

/* Custom dropdown */
#brt-root .brt-dd {
    position: relative;
    flex-shrink: 0;
}

#brt-root .brt-dd-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg);
    border: 2px solid var(--bd);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--tx);
    cursor: pointer;
    font-family: inherit;
    transition: border-color .2s;
    white-space: nowrap;
    line-height: 1.4;
    box-shadow: none;
    text-transform: none;
    letter-spacing: 0;
    text-decoration: none;
    outline: none;
}

#brt-root .brt-dd-btn:hover {
    border-color: var(--c1);
}

#brt-root .brt-dd-flag {
    border-radius: 2px;
    box-shadow: 0 1px 2px rgba(0,0,0,.1);
    flex-shrink: 0;
}

#brt-root .brt-dd-btn svg {
    color: var(--tx3);
    flex-shrink: 0;
}

#brt-root .brt-dd-menu {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    background: var(--bg);
    border: 1px solid var(--bd);
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,.12);
    width: 240px;
    max-height: 340px;
    overflow-y: auto;
    z-index: 100;
}

#brt-root .brt-dd-menu.open {
    display: block;
}

#brt-root .brt-dd-grp {
    padding: 10px 14px 4px;
    font-size: 10px;
    font-weight: 700;
    color: var(--tx3);
    text-transform: uppercase;
    letter-spacing: .8px;
    border-top: 1px solid var(--bd);
}

#brt-root .brt-dd-grp:first-child {
    border-top: none;
    padding-top: 8px;
}

#brt-root .brt-dd-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 14px;
    cursor: pointer;
    font-size: 13px;
    color: var(--tx);
    transition: background .15s;
}

#brt-root .brt-dd-item:hover {
    background: var(--c4);
}

#brt-root .brt-dd-item img {
    border-radius: 2px;
    box-shadow: 0 1px 2px rgba(0,0,0,.1);
    flex-shrink: 0;
}

#brt-root .brt-dd-name {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#brt-root .brt-dd-code {
    color: var(--tx3);
    font-size: 11px;
    font-weight: 600;
    flex-shrink: 0;
}

/* Swap */
.brt-swap-row {
    display: flex;
    justify-content: center;
    margin: -4px 0;
    position: relative;
    z-index: 2;
}

.brt-swap {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--bg);
    border: 2px solid var(--bd);
    color: var(--c1);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .3s;
}

.brt-swap:hover {
    background: var(--c1);
    color: #fff;
    border-color: var(--c1);
    transform: rotate(180deg);
}

.brt-swap svg {
    display: block;
}

/* Rate info */
.brt-rate-info {
    text-align: center;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--bd);
    font-size: 15px;
    color: var(--tx2);
}

.brt-rate-info strong {
    color: var(--c2);
    font-weight: 700;
}

.brt-updated {
    display: block;
    font-size: 11px;
    color: var(--tx3);
    margin-top: 4px;
}

/* Tabs - segmented control */
#brt-root .brt-tabs {
    display: flex;
    width: fit-content;
    margin: 26px auto 0;
    background: var(--bg3);
    border-radius: 10px;
    padding: 4px;
    border: none;
}

#brt-root .brt-tabs .brt-tab {
    padding: 9px 30px;
    border: none;
    background: transparent;
    color: var(--tx2);
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    border-radius: 8px;
    cursor: pointer;
    transition: all .2s;
    box-shadow: none;
    text-transform: none;
    letter-spacing: 0;
    line-height: 1.4;
    text-decoration: none;
    outline: none;
}

#brt-root .brt-tabs .brt-tab.active {
    background: var(--bg);
    color: var(--tx);
    box-shadow: 0 1px 4px rgba(0,0,0,.1);
}

#brt-root .brt-tabs .brt-tab:hover:not(.active) {
    color: var(--c1);
}

/* Panels */
.brt-panel {
    display: none;
    margin-top: 20px;
}

.brt-panel.active {
    display: block;
}

/* Country Grid */
.brt-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

#brt-root .brt-card {
    background: var(--bg);
    border: 1px solid var(--bd);
    border-radius: 12px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: all .2s;
}

#brt-root .brt-card:hover {
    border-color: var(--c3);
    box-shadow: 0 3px 12px rgba(8, 145, 178, .1);
}

#brt-root .brt-card .brt-flag-img {
    width: 30px;
    height: 21px;
    border-radius: 3px;
    box-shadow: 0 1px 3px rgba(0,0,0,.12);
}

.brt-card-info {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.brt-card-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--tx);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.brt-card-code {
    font-size: 10.5px;
    color: var(--tx3);
    font-weight: 500;
}

.brt-card-rate {
    text-align: right;
    flex-shrink: 0;
    background: var(--bg2);
    padding: 5px 10px;
    border-radius: 8px;
}

.brt-card-num {
    font-size: 14px;
    font-weight: 700;
    color: var(--c2);
    white-space: nowrap;
    line-height: 1.3;
}

.brt-card-per {
    font-size: 8.5px;
    color: var(--tx3);
    text-transform: uppercase;
    letter-spacing: .3px;
    font-weight: 600;
}

/* Search */
#brt-root .brt-search-box {
    max-width: 100%;
    margin: 0 auto 16px;
    position: relative;
}

#brt-root .brt-search-box input {
    width: 100%;
    background: var(--bg);
    border: 2px solid var(--bd);
    border-radius: 10px;
    padding: 12px 16px 12px 42px;
    color: var(--tx);
    font-size: 14px;
    font-family: inherit;
    outline: 0;
    transition: border-color .2s;
    box-shadow: none;
    -webkit-appearance: none;
    appearance: none;
    height: auto;
    line-height: 1.5;
    margin: 0;
}

#brt-root .brt-search-box input:focus {
    border-color: var(--c1);
    box-shadow: 0 0 0 3px rgba(8, 145, 178, .08);
}

#brt-root .brt-search-box input::placeholder {
    color: var(--tx3);
}

#brt-root .brt-search-ico {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--tx3);
    display: flex;
    align-items: center;
}

/* Table */
#brt-root .brt-table-wrap {
    background: var(--bg);
    border: 1px solid var(--bd);
    border-radius: 12px;
    overflow: hidden;
}

#brt-root .brt-table {
    width: 100%;
    border-collapse: collapse;
    border-spacing: 0;
    background: var(--bg);
}

#brt-root .brt-table thead th {
    text-align: left;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--tx3);
    font-weight: 700;
    padding: 14px 16px;
    border-bottom: 2px solid var(--bd);
    background: var(--bg2);
    border-top: none;
}

#brt-root .brt-table thead th:last-child {
    text-align: right;
}

#brt-root .brt-table tbody tr {
    cursor: pointer;
    transition: background .15s;
    background: var(--bg);
}

#brt-root .brt-table tbody tr:hover {
    background: var(--c4);
}

#brt-root .brt-table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--bd);
    border-top: none;
    font-size: 13px;
    vertical-align: middle;
    color: var(--tx);
    background: transparent;
    line-height: 1.4;
}

#brt-root .brt-table tbody td:first-child {
    width: 48px;
    padding-right: 8px;
}

#brt-root .brt-table tbody td:first-child img {
    width: 28px;
    height: 20px;
    border-radius: 3px;
    object-fit: cover;
    vertical-align: middle;
    box-shadow: 0 1px 2px rgba(0, 0, 0, .1);
    display: block;
}

#brt-root .brt-table tbody td:last-child {
    text-align: right;
    font-weight: 700;
    color: var(--c2);
    font-size: 14px;
}

#brt-root .brt-table tbody tr:last-child td {
    border-bottom: none;
}

#brt-root .brt-cc {
    color: var(--tx3);
    font-weight: 500;
    font-size: 12px;
}

/* Loading */
.brt-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 40px 0;
    color: var(--tx2);
    font-size: 13px;
}

.brt-spin {
    width: 20px;
    height: 20px;
    border: 2.5px solid var(--bd);
    border-top-color: var(--c1);
    border-radius: 50%;
    animation: brt-sp .8s linear infinite;
    display: inline-block;
}

@keyframes brt-sp {
    to { transform: rotate(360deg); }
}

/* Footer */
.brt-foot {
    text-align: center;
    color: var(--tx3);
    font-size: 11px;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--bd);
    line-height: 1.6;
}

.brt-nope {
    text-align: center;
    padding: 30px 0;
    color: var(--tx3);
    font-size: 13px;
}

/* Responsive */
@media (max-width: 580px) {
    #brt-root {
        padding: 22px 16px 18px;
    }

    .brt-title {
        font-size: 18px;
    }

    .brt-converter {
        padding: 18px 14px 14px;
    }

    .brt-field input {
        font-size: 22px;
    }

    .brt-grid {
        grid-template-columns: 1fr;
    }

    .brt-tab {
        padding: 8px 22px;
        font-size: 12px;
    }
}

@media (max-width: 420px) {
    #brt-root {
        padding: 16px 10px 12px;
    }

    .brt-title {
        font-size: 16px;
    }

    .brt-tag {
        font-size: 9px;
        padding: 3px 8px;
    }

    .brt-box {
        padding: 12px;
        gap: 10px;
    }

    .brt-field input {
        font-size: 20px;
    }

    #brt-select {
        max-width: 120px;
        font-size: 12px;
    }
}