/* ── Base button ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-pill);
    font-family: var(--font-sans);
    font-size: var(--fs-sm);
    font-weight: var(--fw-bold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-decoration: none;
    cursor: pointer;
    border: 2px solid transparent;
    transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
    white-space: nowrap;
}

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

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

/* Primary */
.btn--primary {
    background: var(--color-olive-main);
    color: var(--color-white);
    border-color: var(--color-olive-main);
}

.btn--primary:hover {
    background: var(--color-olive-deep);
    border-color: var(--color-olive-deep);
    box-shadow: 0 8px 24px rgba(83, 101, 60, 0.35);
}

/* Accent / gold */
.btn--accent {
    background: var(--color-gold);
    color: var(--color-ink-green);
    border-color: var(--color-gold);
}

.btn--accent:hover {
    background: var(--color-ochre);
    border-color: var(--color-ochre);
    color: var(--color-white);
    box-shadow: 0 8px 24px rgba(169, 135, 17, 0.35);
}

/* Outline */
.btn--outline {
    background: transparent;
    color: var(--color-olive-main);
    border-color: var(--color-olive-main);
}

.btn--outline:hover {
    background: var(--color-olive-main);
    color: var(--color-white);
}

/* Outline white (on dark bg) */
.btn--outline-white {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.6);
}

.btn--outline-white:hover {
    background: var(--color-white);
    color: var(--color-ink-green);
    border-color: var(--color-white);
}

/* Ghost / text link */
.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: var(--fs-sm);
    font-weight: var(--fw-bold);
    color: var(--color-olive-main);
    text-decoration: none;
    letter-spacing: 0.04em;
    transition: gap var(--t-fast), color var(--t-fast);
}

.btn-link:hover {
    gap: 0.7rem;
    color: var(--color-olive-deep);
}

.btn-link::after {
    content: '→';
}

/* Size variants */
.btn--sm {
    padding: 0.5rem 1.2rem;
    font-size: var(--fs-xs);
}

.btn--lg {
    padding: 1rem 2.5rem;
    font-size: var(--fs-base);
}