:root {
    --bg: var(--tg-theme-bg-color, #ffffff);
    --text: var(--tg-theme-text-color, #1a1a1a);
    --hint: var(--tg-theme-hint-color, #707579);
    --link: var(--tg-theme-link-color, #2481cc);
    --button: var(--tg-theme-button-color, #2481cc);
    --button-text: var(--tg-theme-button-text-color, #ffffff);
    --secondary-bg: var(--tg-theme-secondary-bg-color, #f4f4f5);
    --border: rgba(127, 127, 127, 0.2);
    --danger: #e53935;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 16px;
    line-height: 1.45;
    -webkit-font-smoothing: antialiased;
    overscroll-behavior: contain;
}

.container {
    max-width: 560px;
    margin: 0 auto;
    padding: 16px 16px 96px;
}

.header {
    margin-bottom: 16px;
}

.header h1 {
    font-size: 22px;
    margin: 0 0 4px;
    font-weight: 600;
}

.subtitle {
    margin: 0;
    color: var(--hint);
    font-size: 14px;
}

.card {
    background: var(--secondary-bg);
    border-radius: 14px;
    padding: 14px 16px;
    margin-bottom: 12px;
}

.label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 10px;
    color: var(--text);
}

.select {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='gray' d='M6 8L0 0h12z'/></svg>");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 10px;
    padding-right: 36px;
}

.chips {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.chips--wide {
    grid-template-columns: 1fr;
}

@media (min-width: 480px) {
    .chips--wide {
        grid-template-columns: 1fr 1fr;
    }
}

.chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg);
    color: var(--text);
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease;
    user-select: none;
    font-size: 15px;
}

.chip input {
    accent-color: var(--button);
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.chip:active {
    transform: scale(0.98);
}

.chip--checked {
    background: color-mix(in srgb, var(--button) 14%, transparent);
    border-color: var(--button);
}

.primary-btn {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: 528px;
    margin: 0 auto;
    display: block;
    width: calc(100% - 32px);
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    color: var(--button-text);
    background: var(--button);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.primary-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.error {
    margin: 0 0 12px;
    color: var(--danger);
    font-size: 14px;
    text-align: center;
}