/* ========================================
   Buttons.css - Sistema de Botoes
   ======================================== */

/* ----------------------------------------
   Base
   ---------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    white-space: nowrap;
    user-select: none;
    line-height: 1;
    outline: none;
    text-decoration: none;
}

.btn:focus-visible {
    outline: 2px solid var(--app-primary-color);
    outline-offset: 2px;
}

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

.btn:disabled,
.btn.btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn svg {
    flex-shrink: 0;
}

/* ----------------------------------------
   Tamanhos
   ---------------------------------------- */
.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    gap: 5px;
    border-radius: 6px;
}

.btn-md {
    padding: 9px 18px;
    font-size: 0.875rem;
    gap: 7px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 1rem;
    gap: 8px;
    border-radius: 10px;
}

/* ----------------------------------------
   Variantes
   ---------------------------------------- */

/* Primary */
.btn-primary {
    background: var(--app-primary-color);
    color: #fff;
}

.btn-primary:hover {
    background: var(--app-primary-hover);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35);
}

/* Secondary */
.btn-secondary {
    background: var(--app-border-color);
    color: var(--app-text-primary);
}

.btn-secondary:hover {
    background: var(--app-bg-tertiary);
}

/* Danger */
.btn-danger {
    background: #ef4444;
    color: #fff;
}

.btn-danger:hover {
    background: #dc2626;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.35);
}

/* Ghost */
.btn-ghost {
    background: transparent;
    color: var(--app-text-primary);
    border: 1.5px solid var(--app-border-color);
}

.btn-ghost:hover {
    background: var(--app-border-color);
}

/* ----------------------------------------
   Botao de Icone (quadrado)
   ---------------------------------------- */
.btn-icon {
    padding: 0;
    background: transparent;
    color: var(--app-text-primary);
    border: none;
    border-radius: 8px;
    position: relative;
}

.btn-icon.btn-sm {
    width: 30px;
    height: 30px;
}

.btn-icon.btn-md {
    width: 36px;
    height: 36px;
}

.btn-icon.btn-lg {
    width: 44px;
    height: 44px;
}

.btn-icon:hover {
    background: var(--app-border-color);
    color: var(--app-primary-color);
}

.btn-icon.btn-danger:hover {
    background: #fef2f2;
    color: #ef4444;
}

.btn-icon.btn-primary {
    background: transparent;
    color: var(--app-text-primary);
}

.btn-icon.btn-primary:hover {
    background: rgba(37, 99, 235, 0.1);
    color: var(--app-primary-color);
    box-shadow: none;
}

/* ----------------------------------------
   Tooltip Customizado
   ---------------------------------------- */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background: var(--app-bg-dark);
    color: var(--app-text-light);
    font-size: 0.75rem;
    font-weight: 400;
    padding: 5px 10px;
    border-radius: 6px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 9999;
    line-height: 1.3;
}

[data-tooltip]::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 3px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    border: 5px solid transparent;
    border-top-color: var(--app-bg-dark);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 9999;
}

[data-tooltip]:hover::after,
[data-tooltip]:hover::before {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Tooltip posicao inferior */
[data-tooltip-pos="bottom"]::after {
    bottom: auto;
    top: calc(100% + 8px);
}

[data-tooltip-pos="bottom"]::before {
    bottom: auto;
    top: calc(100% + 3px);
    border-top-color: transparent;
    border-bottom-color: var(--app-bg-dark);
}

/* ----------------------------------------
   Estado Processing (animacao)
   ---------------------------------------- */
.btn-processing {
    pointer-events: none;
    opacity: 0.85;
}

.btn-processing .btn-spinner {
    animation: btn-spin 0.8s linear infinite;
}

.btn-spinner {
    display: inline-flex;
    flex-shrink: 0;
}

.btn-dots {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.btn-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.35;
    animation: btn-dots-bounce 1s infinite ease-in-out;
}

.btn-dot:nth-child(2) {
    animation-delay: 0.15s;
}

.btn-dot:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes btn-spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

@keyframes btn-dots-bounce {
    0%, 80%, 100% {
        opacity: 0.35;
        transform: translateY(0);
    }
    40% {
        opacity: 1;
        transform: translateY(-2px);
    }
}

/* ----------------------------------------
   Toolbar
   ---------------------------------------- */
.btn-toolbar {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px;
    flex-wrap: wrap;
}

.btn-toolbar-bordered {
    background: var(--app-bg-secondary);
    border: 1px solid var(--app-border-color);
    border-radius: 10px;
    box-shadow: var(--app-shadow);
}

.btn-toolbar-group {
    display: flex;
    align-items: center;
    gap: 2px;
}

.btn-toolbar-separator {
    width: 1px;
    height: 24px;
    background: var(--app-border-color);
    margin: 0 6px;
    flex-shrink: 0;
}

.btn-toolbar-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0 8px;
    user-select: none;
}