/* ================================================================
   buttons.css — Global Button System (Bootstrap overrides)
   ================================================================ */

/* ── Base ────────────────────────────────────────────────────── */
.btn {
    font-family: var(--font-sans);
    font-size: 13.5px;
    font-weight: 500;
    letter-spacing: -0.01em;
    border-radius: var(--radius-sm);
    padding: 0 16px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
    text-decoration: none;
    transition: background-color 150ms var(--ease), border-color 150ms var(--ease),
    color 150ms var(--ease), box-shadow 150ms var(--ease), transform 100ms var(--ease);
}

.btn:focus-visible {
    outline: 2px solid var(--color-brand);
    outline-offset: 2px;
    box-shadow: none !important;
}

.btn:disabled {
    opacity: 0.5;
    pointer-events: none;
    transform: none !important;
}

.btn-sm {
    font-size: 12px;
    height: 30px;
    padding: 0 11px;
    border-radius: 7px;
    gap: 4px;
}

.btn-lg {
    font-size: 15px;
    font-weight: 600;
    height: 46px;
    padding: 0 24px;
    border-radius: var(--radius-md);
    gap: 8px;
    letter-spacing: -0.015em;
}

.btn-primary {
    background: linear-gradient(180deg, var(--color-brand-hi) 0%, var(--color-brand) 100%);
    border: 1px solid var(--color-brand-dark);
    color: #fff;
    box-shadow: 0 1px 2px rgba(79, 70, 229, .25), inset 0 1px 0 rgba(255, 255, 255, .12);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(180deg, #6460f2 0%, var(--color-brand-hi) 100%);
    border-color: var(--color-brand-deep);
    color: #fff;
    box-shadow: 0 1px 2px rgba(79, 70, 229, .2), 0 4px 14px rgba(79, 70, 229, .32), inset 0 1px 0 rgba(255, 255, 255, .12);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
    background: var(--color-brand-dark);
    box-shadow: 0 1px 2px rgba(79, 70, 229, .2);
    transform: translateY(0) scale(0.99);
}

.btn-danger {
    background: linear-gradient(180deg, var(--color-danger-hi) 0%, var(--color-danger) 100%);
    border: 1px solid var(--color-danger-dark);
    color: #fff;
    box-shadow: 0 1px 2px rgba(220, 38, 38, .25), inset 0 1px 0 rgba(255, 255, 255, .12);
}

.btn-danger:hover:not(:disabled) {
    background: linear-gradient(180deg, #fc8181 0%, var(--color-danger-hi) 100%);
    border-color: #991b1b;
    color: #fff;
    box-shadow: 0 1px 2px rgba(220, 38, 38, .2), 0 4px 14px rgba(220, 38, 38, .28), inset 0 1px 0 rgba(255, 255, 255, .12);
    transform: translateY(-1px);
}

.btn-danger:active:not(:disabled) {
    background: var(--color-danger-dark);
    box-shadow: 0 1px 2px rgba(220, 38, 38, .2);
    transform: translateY(0) scale(0.99);
}

.btn-secondary {
    background: #fff;
    border: 1px solid var(--color-slate-200);
    color: var(--color-slate-600);
    box-shadow: 0 1px 2px rgba(15, 23, 42, .05);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-slate-50);
    border-color: var(--color-slate-300);
    color: var(--color-slate-700);
    box-shadow: 0 1px 2px rgba(15, 23, 42, .05), 0 3px 8px rgba(15, 23, 42, .08);
    transform: translateY(-1px);
}

.btn-secondary:active:not(:disabled) {
    background: var(--color-slate-100);
    box-shadow: none;
    transform: translateY(0) scale(0.99);
}

.btn-outline-secondary {
    background: transparent;
    border: 1px solid var(--color-slate-200);
    color: var(--color-slate-500);
    box-shadow: none;
}

.btn-outline-secondary:hover:not(:disabled) {
    background: var(--color-slate-50);
    border-color: var(--color-slate-300);
    color: var(--color-slate-700);
    transform: translateY(-1px);
}

.btn-outline-secondary:active:not(:disabled) {
    background: var(--color-slate-100);
    transform: translateY(0) scale(0.99);
}