/* ── controls row ── */
.controls {
    margin-top: 24px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

/* ── base button ── */
.btn {
    padding: 12px 34px;
    border: none;
    border-radius: 40px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s, opacity 0.2s, box-shadow 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex: 1 1 auto;
    min-width: 120px;
    letter-spacing: 0.15px;
    font-family: inherit;
}

.btn:active {
    transform: scale(0.97);
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
    box-shadow: none !important;
}

.btn .btn-label {
    line-height: 1;
}

/* ── primary ── */
.btn-primary {
    background: #1a1715;
    color: #fff;
    box-shadow: 0 2px 8px rgba(26, 23, 21, 0.12);
}

.btn-primary:hover:not(:disabled) {
    background: #0d0b09;
    box-shadow: 0 4px 16px rgba(26, 23, 21, 0.18);
}

.btn-primary.generating {
    background: #4a4038;
}

.btn-primary.done {
    background: #2a5a3a;
    box-shadow: 0 2px 8px rgba(42, 90, 58, 0.15);
}

.btn-primary.done:hover:not(:disabled) {
    background: #1e4a2e;
}

/* ── success ── */
.btn-success {
    background: #2a5a3a;
    color: #fff;
    box-shadow: 0 2px 8px rgba(42, 90, 58, 0.12);
}

.btn-success:hover:not(:disabled) {
    background: #1e4a2e;
    box-shadow: 0 4px 16px rgba(42, 90, 58, 0.18);
}

/* ── outline ── */
.btn-outline {
    background: transparent;
    color: #1a1715;
    border: 1.5px solid #d6d0ca;
}

.btn-outline:hover:not(:disabled) {
    background: #f5f0eb;
    border-color: #b0a69c;
}