/* ==========================================================================
   InSono — Buttons
   Ported from assets/custom.css (.btn) and section-insono-collection.css (.ic-btn)
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 50px;
    padding: 0 22px;
    border: 0;
    border-radius: var(--radius-pill);
    cursor: pointer;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-align: center;
    transition:
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        background var(--transition-fast),
        border-color var(--transition-fast);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:disabled,
.btn[aria-disabled="true"] {
    cursor: not-allowed;
    opacity: 0.5;
    transform: none;
}

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* ---- Varianten ---------------------------------------------------------- */

.btn--primary,
.btn-primary {
    background: var(--accent);
    color: var(--white);
    box-shadow: 0 16px 32px rgba(57, 66, 55, 0.22);
}

.btn--primary:hover,
.btn-primary:hover {
    box-shadow: 0 20px 44px rgba(57, 66, 55, 0.28);
}

.btn--secondary,
.btn-secondary {
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--text);
}

.btn--secondary:hover,
.btn-secondary:hover {
    border-color: var(--header-accent);
    color: var(--header-accent);
}

.btn--outline {
    border: 1px solid var(--line-strong);
    background: transparent;
    color: var(--text);
}

.btn--outline:hover {
    border-color: var(--accent);
    background: rgba(57, 66, 55, 0.04);
}

.btn--ghost {
    background: transparent;
    color: var(--accent);
    box-shadow: none;
}

.btn--ghost:hover {
    background: rgba(57, 66, 55, 0.06);
}

.btn--whatsapp {
    border: 1px solid rgba(37, 211, 102, 0.35);
    background: rgba(37, 211, 102, 0.1);
    color: #128c4a;
}

.btn--whatsapp:hover {
    border-color: rgba(37, 211, 102, 0.6);
    background: rgba(37, 211, 102, 0.16);
}

.btn--danger {
    background: var(--danger);
    color: var(--white);
}

/* ---- Sizes -------------------------------------------------------------- */

.btn--sm {
    min-height: 40px;
    padding: 0 16px;
    font-size: 14px;
}

.btn--lg {
    min-height: 58px;
    padding: 0 30px;
    font-size: 17px;
}

.btn--block {
    width: 100%;
}

/* ---- Icon-Button -------------------------------------------------------- */

.btn-icon {
    display: inline-grid;
    width: 40px;
    height: 40px;
    place-items: center;
    border-radius: 50%;
    color: var(--text);
    opacity: 0.88;
    transition: color var(--transition-fast), background var(--transition-fast);
}

.btn-icon:hover {
    background: rgba(30, 33, 29, 0.05);
    color: var(--header-accent);
    opacity: 1;
}

.btn-icon svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ---- Text link with an arrow -------------------------------------------- */

.btn-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.btn-arrow svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.btn-arrow:hover svg {
    transform: translateX(3px);
}

/* ---- Ladezustand -------------------------------------------------------- */

.btn.is-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn.is-loading::after {
    content: "";
    position: absolute;
    width: 18px;
    height: 18px;
    border: 2px solid currentcolor;
    border-top-color: transparent;
    border-radius: 50%;
    color: var(--white);
    animation: btn-spin 700ms linear infinite;
}

.btn--secondary.is-loading::after,
.btn--outline.is-loading::after {
    color: var(--accent);
}

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