:root { color-scheme: dark; }
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
body {
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh;
    padding: max(24px, env(safe-area-inset-top)) 20px max(24px, env(safe-area-inset-bottom));
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0a0a0a;
    color: #f5f5f5;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
}
.container { width: 100%; max-width: 400px; }
header { margin-bottom: 28px; text-align: center; }
.eyebrow {
    color: #ff9500;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
}
h1 { margin: 10px 0 0; color: #fff; font-size: 30px; letter-spacing: -.6px; }
.currencies { display: flex; flex-direction: column; gap: 12px; }
.currency-row {
    display: grid;
    grid-template-columns: 65px 1fr;
    grid-template-rows: auto auto;
    align-items: center;
    min-height: 92px;
    padding: 16px 18px;
    background: #1a1a1a;
    border: 2px solid #333;
    border-radius: 16px;
    cursor: text;
    transition: border-color .15s;
}
.currency-row:focus-within { border-color: #ff9500; }
.currency-code { grid-column: 1; grid-row: 1; font-size: 19px; font-weight: 700; color: #ff9500; }
.currency-name { grid-column: 1 / -1; grid-row: 2; margin-top: 5px; color: #777; font-size: 12px; }
.currency-row input {
    grid-column: 2;
    grid-row: 1;
    width: 100%;
    padding: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: #fff;
    font: 600 27px/1.2 -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    font-variant-numeric: tabular-nums;
    text-align: right;
    appearance: none;
}
.currency-row input::placeholder { color: #555; }
.actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 10px; }
.actions button {
    min-width: 72px;
    min-height: 44px;
    padding: 8px 16px;
    border: 1px solid #3a3a3a;
    border-radius: 10px;
    background: #222;
    color: #ddd;
    font: 600 14px -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    cursor: pointer;
}
.actions button[hidden] { display: none; }
.actions button:disabled { opacity: .55; cursor: default; }
.actions button:active { background: #333; }
.actions button:focus-visible { outline: 2px solid #ff9500; outline-offset: 2px; }
.rate-status { min-height: 20px; margin: 10px 4px 0; color: #888; font-size: 12px; line-height: 1.4; text-align: center; }
.app-update-status { margin: 0 4px; color: #888; font-size: 12px; line-height: 1.4; text-align: center; }
.app-update-status [hidden] { display: none; }
.app-update-status button {
    min-height: 44px;
    padding: 6px 12px;
    border: 0;
    background: transparent;
    color: #ff9500;
    font: 600 12px -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    cursor: pointer;
}
.app-update-status button:focus-visible { outline: 2px solid #ff9500; outline-offset: 2px; border-radius: 6px; }
@media (max-width: 360px) { .currency-row input { font-size: 23px; } }
@media (max-height: 620px) {
    body { align-items: flex-start; }
    header { margin-bottom: 16px; }
    h1 { font-size: 25px; }
    .currencies { gap: 8px; }
    .currency-row { min-height: 72px; padding: 10px 14px; }
    .currency-row input { font-size: 23px; }
}