/* ============================================
   BOTÕES — B2M LIGHT / DARK
   Limpo, moderno, sem extravagâncias
   ============================================ */

/* ---------- Base ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    line-height: 1.5;
    padding: 0.55rem 1.1rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.01em;
}

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

.btn i,
.btn .bi {
    font-size: 1.05rem;
    line-height: 1;
    flex-shrink: 0;
}

/* Ripple sutil ao clicar */
.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    transform: translate(-50%, -50%);
    transition: width 0.35s ease, height 0.35s ease;
}
.btn:active::after {
    width: 250px;
    height: 250px;
}

/* ---------- Tamanhos ---------- */
.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}
.btn-sm i,
.btn-sm .bi {
    font-size: 0.95rem;
}

.btn-lg {
    padding: 0.7rem 1.4rem;
    font-size: 1rem;
    border-radius: var(--radius-lg);
}
.btn-lg i,
.btn-lg .bi {
    font-size: 1.15rem;
}

/* ---------- Primary ---------- */
.btn-primary {
    background: linear-gradient(180deg, #2a7fff 0%, var(--accent-blue) 100%);
    border-color: rgba(31, 111, 235, 0.5);
    color: #fff;
    box-shadow: 0 1px 2px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.08);
}
.btn-primary:hover {
    background: linear-gradient(180deg, #4d94ff 0%, #2a7fff 100%);
    border-color: var(--accent-blue-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(31, 111, 235, 0.35), inset 0 1px 0 rgba(255,255,255,0.1);
}
.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 3px rgba(31, 111, 235, 0.2);
}
.btn-primary:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

/* ---------- Secondary ---------- */
.btn-secondary {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
    background: var(--bg-primary);
    border-color: var(--text-tertiary);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
.btn-secondary:active {
    transform: translateY(0);
}

/* ---------- Success ---------- */
.btn-success {
    background: linear-gradient(180deg, #3fb950 0%, #2ea043 100%);
    border-color: rgba(46, 160, 67, 0.5);
    color: #fff;
    box-shadow: 0 1px 2px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.08);
}
.btn-success:hover {
    background: linear-gradient(180deg, #56d668 0%, #3fb950 100%);
    border-color: #3fb950;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(46, 160, 67, 0.35);
}
.btn-success:active {
    transform: translateY(0);
}

/* ---------- Danger ---------- */
.btn-danger {
    background: linear-gradient(180deg, #ff6b63 0%, var(--danger) 100%);
    border-color: rgba(248, 81, 73, 0.5);
    color: #fff;
    box-shadow: 0 1px 2px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.08);
}
.btn-danger:hover {
    background: linear-gradient(180deg, #ff8a84 0%, #ff6b63 100%);
    border-color: #ff6b63;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(248, 81, 73, 0.35);
}
.btn-danger:active {
    transform: translateY(0);
}

/* ---------- Warning ---------- */
.btn-warning {
    background: linear-gradient(180deg, #e3b341 0%, #d29922 100%);
    border-color: rgba(210, 153, 34, 0.5);
    color: #0d1117;
    box-shadow: 0 1px 2px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-warning:hover {
    background: linear-gradient(180deg, #f0c85a 0%, #e3b341 100%);
    border-color: #e3b341;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(210, 153, 34, 0.35);
}
.btn-warning:active {
    transform: translateY(0);
}

/* ---------- Info ---------- */
.btn-info {
    background: linear-gradient(180deg, #79c0ff 0%, #58a6ff 100%);
    border-color: rgba(88, 166, 255, 0.5);
    color: #0d1117;
    box-shadow: 0 1px 2px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-info:hover {
    background: linear-gradient(180deg, #9ad4ff 0%, #79c0ff 100%);
    border-color: #79c0ff;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(88, 166, 255, 0.35);
}
.btn-info:active {
    transform: translateY(0);
}

/* ---------- Light ---------- */
.btn-light {
    background: linear-gradient(180deg, var(--text-secondary) 0%, #6e7681 100%);
    border-color: rgba(139, 148, 158, 0.4);
    color: var(--bg-primary);
    box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}
.btn-light:hover {
    background: linear-gradient(180deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.btn-light:active {
    transform: translateY(0);
}

/* ---------- Dark ---------- */
.btn-dark {
    background: linear-gradient(180deg, #1c2128 0%, var(--bg-primary) 100%);
    border-color: var(--border-color);
    color: var(--text-primary);
    box-shadow: 0 1px 2px rgba(0,0,0,0.3);
}
.btn-dark:hover {
    background: linear-gradient(180deg, #2d333b 0%, #1c2128 100%);
    border-color: var(--text-tertiary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.35);
}
.btn-dark:active {
    transform: translateY(0);
}

/* ============================================
   OUTLINE / GHOST
   ============================================ */

.btn-outline-primary {
    background: transparent;
    border-color: rgba(31, 111, 235, 0.4);
    color: var(--accent-blue);
}
.btn-outline-primary:hover {
    background: var(--accent-blue-bg);
    border-color: var(--accent-blue);
    color: var(--accent-blue-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(31, 111, 235, 0.15);
}
.btn-outline-primary:active {
    transform: translateY(0);
}

.btn-outline-secondary {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-secondary);
}
.btn-outline-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-tertiary);
    color: var(--text-primary);
    transform: translateY(-1px);
}
.btn-outline-secondary:active {
    transform: translateY(0);
}

.btn-outline-success {
    background: transparent;
    border-color: rgba(46, 160, 67, 0.4);
    color: var(--text-success);
}
.btn-outline-success:hover {
    background: rgba(46, 160, 67, 0.1);
    border-color: var(--text-success);
    color: #56d668;
    transform: translateY(-1px);
}
.btn-outline-success:active {
    transform: translateY(0);
}

.btn-outline-danger {
    background: transparent;
    border-color: rgba(248, 81, 73, 0.4);
    color: var(--danger);
}
.btn-outline-danger:hover {
    background: var(--danger-bg);
    border-color: var(--danger);
    color: #ff6b63;
    transform: translateY(-1px);
}
.btn-outline-danger:active {
    transform: translateY(0);
}

.btn-outline-warning {
    background: transparent;
    border-color: rgba(210, 153, 34, 0.4);
    color: var(--text-warning);
}
.btn-outline-warning:hover {
    background: rgba(210, 153, 34, 0.1);
    border-color: var(--text-warning);
    color: #e3b341;
    transform: translateY(-1px);
}
.btn-outline-warning:active {
    transform: translateY(0);
}

.btn-outline-info {
    background: transparent;
    border-color: rgba(88, 166, 255, 0.4);
    color: #58a6ff;
}
.btn-outline-info:hover {
    background: rgba(88, 166, 255, 0.1);
    border-color: #58a6ff;
    color: #79c0ff;
    transform: translateY(-1px);
}
.btn-outline-info:active {
    transform: translateY(0);
}

.btn-outline-light {
    background: transparent;
    border-color: rgba(139, 148, 158, 0.3);
    color: var(--text-secondary);
}
.btn-outline-light:hover {
    background: rgba(255,255,255,0.04);
    border-color: var(--text-secondary);
    color: var(--text-primary);
    transform: translateY(-1px);
}
.btn-outline-light:active {
    transform: translateY(0);
}

.btn-outline-dark {
    background: transparent;
    border-color: rgba(48, 54, 61, 0.6);
    color: var(--text-primary);
}
.btn-outline-dark:hover {
    background: rgba(255,255,255,0.04);
    border-color: var(--border-color);
    transform: translateY(-1px);
}
.btn-outline-dark:active {
    transform: translateY(0);
}

/* ============================================
   ÍCONE APENAS
   ============================================ */

.btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: var(--radius-md);
}
.btn-icon i,
.btn-icon .bi {
    margin: 0;
    font-size: 1.1rem;
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
}
.btn-icon.btn-sm i,
.btn-icon.btn-sm .bi {
    font-size: 0.95rem;
}

.btn-icon.btn-lg {
    width: 46px;
    height: 46px;
}
.btn-icon.btn-lg i,
.btn-icon.btn-lg .bi {
    font-size: 1.25rem;
}

/* ============================================
   GRUPOS DE BOTÕES
   ============================================ */

.btn-group .btn {
    border-radius: 0;
}
.btn-group .btn:first-child {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

/* Botões do menu superior sobre a barra escura do tema claro. */
html[data-theme="light"] .topbar .btn {
    transform: none;
    box-shadow: none;
}

html[data-theme="light"] .topbar .btn-outline-secondary {
    color: #e7f0fa;
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(218, 232, 246, 0.46);
}

html[data-theme="light"] .topbar .btn-outline-secondary:hover,
html[data-theme="light"] .topbar .btn-outline-secondary:focus {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.78);
    box-shadow: 0 3px 10px rgba(7, 20, 34, 0.2);
}

html[data-theme="light"] .topbar .btn-outline-primary {
    color: #dcecff;
    background: rgba(76, 156, 236, 0.1);
    border-color: rgba(123, 187, 250, 0.68);
}

html[data-theme="light"] .topbar .btn-outline-primary:hover,
html[data-theme="light"] .topbar .btn-outline-primary:focus {
    color: #ffffff;
    background: rgba(80, 164, 248, 0.24);
    border-color: #8bc7ff;
    box-shadow: 0 3px 10px rgba(7, 20, 34, 0.2);
}

html[data-theme="light"] .topbar .btn-outline-danger {
    color: #ffb8be;
    background: rgba(207, 34, 46, 0.1);
    border-color: rgba(255, 123, 134, 0.72);
}

html[data-theme="light"] .topbar .btn-outline-danger:hover,
html[data-theme="light"] .topbar .btn-outline-danger:focus {
    color: #ffffff;
    background: #b82a37;
    border-color: #e96671;
    box-shadow: 0 3px 10px rgba(7, 20, 34, 0.22);
}

html[data-theme="light"] .topbar .btn-primary,
html[data-theme="light"] .topbar .btn-success {
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 3px 9px rgba(7, 20, 34, 0.22);
}

html[data-theme="light"] .topbar .btn:disabled,
html[data-theme="light"] .topbar .btn.disabled {
    color: rgba(231, 240, 250, 0.52);
    border-color: rgba(218, 232, 246, 0.24);
    background: rgba(255, 255, 255, 0.03);
}
.btn-group .btn:last-child {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.btn-group .btn:not(:first-child) {
    border-left-color: rgba(0,0,0,0.15);
}

/* ============================================
   RESPONSIVO
   ============================================ */

@media (max-width: 768px) {
    .btn {
        font-size: 0.82rem;
        padding: 0.45rem 0.85rem;
    }
    .btn i,
    .btn .bi {
        font-size: 1rem;
    }
    .btn-sm {
        padding: 0.3rem 0.6rem;
        font-size: 0.78rem;
    }
    .btn-sm i,
    .btn-sm .bi {
        font-size: 0.9rem;
    }
    .btn-lg {
        padding: 0.6rem 1.1rem;
        font-size: 0.92rem;
    }
    .btn-lg i,
    .btn-lg .bi {
        font-size: 1.05rem;
    }
    .btn-icon {
        width: 34px;
        height: 34px;
    }
    .btn-icon.btn-sm {
        width: 28px;
        height: 28px;
    }
    .btn-icon.btn-lg {
        width: 40px;
        height: 40px;
    }
}