.button {
    --accent: var(--ink);
    --invert: var(--paper-soft);
    --ring: color-mix(in srgb, var(--accent) 30%, transparent);

    position: relative;
    border-radius: var(--radius-pill);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    line-height: 1;
    padding: 1em 1.5em;
    text-transform: none;
    justify-content: center;
    text-align: center;
    background-color: var(--accent);
    color: var(--invert);
    align-items: center;
    gap: 0.6em;
    isolation: isolate;
    overflow: hidden;
    transition:
        transform 0.4s var(--ease-out-expo),
        box-shadow 0.4s var(--ease-out-expo),
        background-color 0.3s ease;
    box-shadow:
        inset 0 1px 0 0 rgba(255, 255, 255, 0.16),
        0 1px 0 0 rgba(20, 18, 28, 0.06),
        0 8px 24px -8px var(--ring);
}

.button::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0));
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.button:hover {
    transform: translateY(-2px);
    box-shadow:
        inset 0 1px 0 0 rgba(255, 255, 255, 0.22),
        0 16px 32px -10px var(--ring),
        0 4px 10px -4px rgba(20, 18, 28, 0.18);
}

.button:hover::after {
    opacity: 1;
}

.button:active {
    transform: translateY(0);
}

.button.is-primary {
    --accent: var(--pink);
    --invert: var(--surface);
    background: linear-gradient(135deg, #FF4FBE 0%, #C81F8E 100%);
}

.button.is-secondary {
    --accent: var(--purple);
    --invert: var(--surface);
    background: linear-gradient(135deg, #9C82FF 0%, #4F31D9 100%);
}

.button.is-white {
    --accent: var(--surface);
    --invert: var(--ink);
    background-color: var(--surface);
}

.button.is-orange {
    --accent: var(--coral);
    --invert: var(--surface);
    background: linear-gradient(135deg, #FFB088 0%, #D85A2A 100%);
}

.button.is-yellow {
    --accent: var(--sun);
    --invert: var(--ink);
    background: linear-gradient(135deg, #FFE08A 0%, #FFC93C 100%);
}

.button.is-outlined {
    background: transparent;
    color: var(--accent);
    box-shadow: inset 0 0 0 1.5px var(--accent);
}

.button.is-outlined:hover {
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    box-shadow:
        inset 0 0 0 1.5px var(--accent),
        0 12px 24px -10px var(--ring);
}

.button.is-ghost {
    background: var(--paper-soft);
    color: var(--ink);
    box-shadow:
        inset 0 0 0 1px var(--line),
        0 1px 0 0 rgba(255, 255, 255, 0.4);
}

.button.is-ghost:hover {
    background: var(--surface);
    box-shadow:
        inset 0 0 0 1px var(--purple),
        0 12px 24px -10px rgba(123, 92, 255, 0.3);
}

.button.is-large {
    font-size: 1rem;
    padding: 1.15em 1.75em;
}

.button.is-gradient {
    background: var(--gradient-aurora);
    background-size: 200% 200%;
    color: var(--surface);
    animation: shimmer 8s ease infinite;
}

.button .icon {
    height: 1em;
    width: 1em;
}

.buttons {
    display: flex;
    gap: 0.75em;
    flex-wrap: wrap;
    align-items: center;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    color: var(--purple-deep);
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease, gap 0.3s var(--ease-out-expo);
}

.text-link::after {
    content: "→";
    transition: transform 0.4s var(--ease-out-expo);
    display: inline-block;
}

.text-link:hover {
    color: var(--pink);
    gap: 0.65em;
}

.text-link:hover::after {
    transform: translateX(4px);
}