/* RESET */
* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    margin: 0;
    font-family: Arial, sans-serif;
    background: #043f98;
    color: #eaeaea;
}

/* PAGE LAYOUT */
.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* MAIN CONTENT */
.container {
    flex: 1;
    max-width: 420px;
    width: 100%;
    margin: auto;
    padding: 16px;
    text-align: center;
}

/* TITLE */
h1 {
    font-size: 1.4rem;
    margin-bottom: 16px;
}

/* FORM */
form {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

input {
    flex: 1;
    padding: 10px;
    font-size: 16px;
    border-radius: 6px;
    border: none;
    outline: none;
}

button {
    padding: 10px 14px;
    font-size: 16px;
    border: none;
    border-radius: 6px;
    background: #238636;
    color: white;
    cursor: pointer;
}

/* CARD */
.card {
    background: #161b22;
    border-radius: 12px;
    padding: 16px;
    margin-top: 10px;
}

.card img {
    width: 50px;
    height: 50px;
    margin-bottom: 8px;
}

/* TEXT */
.price {
    font-size: 1.4rem;
    margin: 6px 0;
}

.change.up {
    color: #3fb950;
}

.change.down {
    color: #f85149;
}

.network {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* TRADINGVIEW */
iframe {
    width: 100%;
    height: 260px;
    border-radius: 10px;
    margin-top: 12px;
}

/* ERROR */
.error {
    color: #f85149;
    margin-top: 12px;
}

/* FOOTER */
.footer {
    background: #010409;
    color: #8b949e;
    text-align: center;
    padding: 12px;
    font-size: 13px;
}

/* -------------------------
   MOBILE OPTIMIZATION
--------------------------*/
@media (max-width: 480px) {
    form {
        flex-direction: column;
    }

    button {
        width: 100%;
    }

    iframe {
        height: 220px;
    }

    h1 {
        font-size: 1.25rem;
    }
}