.button {
    appearance: none;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-radius: 12px;
    padding: 12px 16px;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: .01em;
    transition: transform .05s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease;
    width: 100%;
    min-height: 48px;
    -webkit-tap-highlight-color: transparent;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.button-primary {
    color: #fff;
    border: 1px solid var(--brand-1);
    background: linear-gradient(90deg, var(--brand-1), var(--brand-2));
    box-shadow: 0 4px 12px rgba(229, 9, 20, .2);
}

.button-primary.is-enabled:not(:disabled) {
    background: linear-gradient(90deg, rgba(229, 9, 20, 0.85), rgba(255, 46, 99, 0.85));
    border-color: rgba(229, 9, 20, 0.9);
    box-shadow: 0 8px 16px rgba(229, 9, 20, .2);
}

.button-primary.is-enabled:not(:disabled):hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(229, 9, 20, .3);
    background: linear-gradient(90deg, rgba(229, 9, 20, 0.9), rgba(255, 46, 99, 0.9));
}

.button-primary.is-enabled:not(:disabled):active {
    transform: translateY(0);
    box-shadow: 0 8px 18px rgba(229, 9, 20, .25);
}

.button-primary:disabled {
    background: linear-gradient(90deg, rgba(229, 9, 20, 0.5), rgba(255, 46, 99, 0.5));
    border-color: rgba(229, 9, 20, 0.5);
    color: rgba(255, 255, 255, .7);
    cursor: not-allowed !important;
    pointer-events: none;
    box-shadow: 0 4px 12px rgba(229, 9, 20, .1);
}

.button-secondary {
    color: var(--ink-1);
    background: linear-gradient(90deg, #1f1f1d, #232321);
    border: 1px solid var(--line);
    font-weight: 600;
    min-width: 100px;
}

.button-secondary:hover {
    box-shadow: 0 8px 20px rgba(0,0,0,.25);
    transform: translateY(-1px);
    background: linear-gradient(90deg, #232321, #272725);
}

.button-arrow {
    width: 16px;
    height: 16px;
    transition: transform .2s ease;
}

.button:hover .button-arrow {
    transform: translateX(4px);
}

.spinner {
    width: 16px;
    height: 16px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}