@font-face {
    font-family: 'Montserrat';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url(..//font/Montserrat-Regular.woff2) format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: 'Montserrat';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url(..//font/Montserrat-Medium.woff2) format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: 'Montserrat';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url(../font/Montserrat-SemiBold.woff2) format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
    --body-gradient: linear-gradient(180deg, #2d2d2d 0%, #2d2d2d 70px, #000000 100%);
    --card-bg: rgba(48, 48, 48, 0.27);
    --input-bg: #212121;
    --text-color-primary: #ffffff;
    --text-color-secondary: #777777;
    --button-text-color: #000000;
    --accent-color: #94f9c3;
    --accent-color-transparent: rgba(148, 249, 195, 0.412);
    --border-color: #555555;
    --shadow-light: 0 8px 10px 1px rgba(0, 0, 0, 0.14), 0 3px 14px 2px rgba(0, 0, 0, 0.12), 0 5px 5px -3px rgba(0, 0, 0, 0.4);
    --shadow-dark: 0 8px 10px 1px rgba(0, 0, 0, 0.14), 0 3px 14px 2px rgba(0, 0, 0, 0.12), 0 5px 5px -3px rgba(0, 0, 0, 0.2);
    --font-size-base: 15px;
    --line-height-base: 19px;
    --font-weight-normal: 400;
    --font-weight-semibold: 500;
    --font-weight-bold: 600;
    --font-size-title: 3rem;
    --font-size-subtitle: 1.25rem;
    --font-size-footer: 0.9rem;
    --spacing-container: 2rem;
    --spacing-title-to-bottom: 0rem;
    --spacing-subtitle-to-form: 0.75rem;
    --spacing-form-to-bottom: 3rem;
    --container-gap: 1rem;
    --border-radius: 15px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
}

html,
body {
    height: 100%;
    width: 100%;
    background: var(--body-gradient);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color-primary);
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 90%;
    max-width: 480px;
    padding: var(--spacing-container);
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: var(--container-gap);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.container.visible {
    opacity: 1;
}

.header {
    margin-bottom: var(--spacing-title-to-bottom);
}

.header h1 {
    font-size: var(--font-size-title);
    color: var(--text-color-primary);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-subtitle-to-form);
}

.header p {
    font-size: var(--font-size-subtitle);
    color: var(--text-color-secondary);
    margin-bottom: var(--spacing-subtitle-to-form);
}

.search-form {
    width: 100%;
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-form-to-bottom);
    gap: 0.5rem;
}

.input-row {
    display: flex;
    width: 100%;
    position: relative;
}

.input-row input[type="text"] {
    flex: 1;
    min-width: 0;
    padding: 0.75rem 1rem;
    font-size: var(--font-size-base);
    color: var(--text-color-primary);
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    outline: none;
    transition: border-color 0.2s ease, border-radius 0.3s ease;
    box-shadow: var(--shadow-dark);
}

.input-row input[type="text"]:focus {
    border-color: var(--accent-color);
}

.input-row input[type="text"]::placeholder {
    color: var(--text-color-secondary);
}

.input-row.has-button input[type="text"] {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-row button {
    max-width: 0;
    opacity: 0;
    overflow: hidden;
    padding: 0;
    border: none;
    cursor: default;
    background-color: var(--accent-color);
    color: var(--button-text-color);
    font-size: var(--font-size-base);
    box-shadow: var(--shadow-dark);
    transition: max-width 0.3s ease, opacity 0.3s ease, padding 0.3s ease, border 0.3s ease, border-radius 0.3s ease;
}

.input-row.has-button button {
    max-width: 150px;
    opacity: 1;
    padding: 0 1.5rem;
    border: 1px solid var(--accent-color);
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
}

.input-row.has-button button:hover:enabled {
    background-color: var(--accent-color-transparent);
    box-shadow: var(--shadow-light);
}

.input-row.has-button button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.status-text {
    font-size: var(--font-size-base);
    min-height: 3em;
    color: var(--text-color-secondary);
    margin: 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.status-text.visible {
    opacity: 1;
}

.status-available {
    color: var(--accent-color);
    font-weight: var(--font-weight-bold);
}

.status-unavailable {
    color: #ff6b6b;
    font-weight: var(--font-weight-bold);
}

.status-error {
    color: #cccccc;
    font-style: italic;
}

.status-available .price-text {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1em;
    font-weight: var(--font-weight-semibold);
    margin-top: 0.25rem;
    color: var(--text-color-secondary);
}

.hns-icon {
    width: 1em;
    height: 1em;
    vertical-align: middle;
    margin-right: 0.1em;
    filter: invert(1);
}

.footer {
    font-size: var(--font-size-footer);
    color: var(--text-color-secondary);
}

.footer a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: var(--font-weight-bold);
}

.footer a:hover {
    opacity: 0.8;
}

@media (max-width: 480px) {
    :root {
        --font-size-title: 2.5rem;
        --font-size-subtitle: 1rem;
        --font-size-base: 14px;
        --line-height-base: 18px;
    }

    .container {
        padding: 1.5rem;
        gap: 1rem;
    }

    .input-row.has-button button {
        max-width: 120px;
        padding: 0 1rem;
    }
}