/* =====================================================
   LEXFLOW - Sistema de Botones Premium
   SaaS Jurídico Profesional
   ===================================================== */

/* =====================================================
   1. VARIABLES - Paleta Corporativa Legal
   ===================================================== */
:root {
    /* Colores primarios - Azul corporativo sobrio */
    --btn-primary-bg: #1e3a5f;
    --btn-primary-bg-hover: #152a45;
    --btn-primary-bg-active: #0f1f33;
    --btn-primary-text: #ffffff;

    /* Colores secundarios - Gris elegante */
    --btn-secondary-bg: #f8f9fa;
    --btn-secondary-bg-hover: #e9ecef;
    --btn-secondary-bg-active: #dee2e6;
    --btn-secondary-text: #495057;
    --btn-secondary-border: #ced4da;

    /* Ghost - Transparente con borde sutil */
    --btn-ghost-text: #495057;
    --btn-ghost-text-hover: #1e3a5f;
    --btn-ghost-bg-hover: rgba(30, 58, 95, 0.06);
    --btn-ghost-bg-active: rgba(30, 58, 95, 0.1);

    /* Danger - Rojo corporativo */
    --btn-danger-bg: #9b2c2c;
    --btn-danger-bg-hover: #822727;
    --btn-danger-bg-active: #6b1f1f;
    --btn-danger-text: #ffffff;

    /* Success - Verde sobrio */
    --btn-success-bg: #276749;
    --btn-success-bg-hover: #22543d;
    --btn-success-bg-active: #1c4532;
    --btn-success-text: #ffffff;

    /* Warning - Ámbar corporativo */
    --btn-warning-bg: #b7791f;
    --btn-warning-bg-hover: #975a16;
    --btn-warning-bg-active: #744210;
    --btn-warning-text: #ffffff;

    /* Disabled */
    --btn-disabled-bg: #e9ecef;
    --btn-disabled-text: #adb5bd;
    --btn-disabled-border: #dee2e6;

    /* Transiciones */
    --btn-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);

    /* Sombras */
    --btn-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --btn-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --btn-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);

    /* Focus ring */
    --btn-focus-ring: 0 0 0 3px rgba(30, 58, 95, 0.15);
    --btn-focus-ring-danger: 0 0 0 3px rgba(155, 44, 44, 0.15);
    --btn-focus-ring-success: 0 0 0 3px rgba(39, 103, 73, 0.15);
}

/* =====================================================
   2. BASE - Estilos compartidos
   ===================================================== */
.btn-lf {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.25;
    text-decoration: none;
    white-space: nowrap;
    border: 1px solid transparent;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: var(--btn-transition);
    user-select: none;
    -webkit-appearance: none;
    appearance: none;
}

.btn-lf:focus {
    outline: none;
}

.btn-lf:focus-visible {
    box-shadow: var(--btn-focus-ring);
}

/* Icono dentro del botón */
.btn-lf i,
.btn-lf svg {
    font-size: 1em;
    width: 1em;
    height: 1em;
    flex-shrink: 0;
}

/* =====================================================
   3. PRIMARY - Acción principal (1 por vista)
   ===================================================== */
.btn-lf-primary {
    background-color: var(--btn-primary-bg);
    border-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    box-shadow: var(--btn-shadow-sm);
}

.btn-lf-primary:hover {
    background-color: var(--btn-primary-bg-hover);
    border-color: var(--btn-primary-bg-hover);
    color: var(--btn-primary-text);
    box-shadow: var(--btn-shadow);
    transform: translateY(-1px);
}

.btn-lf-primary:active {
    background-color: var(--btn-primary-bg-active);
    border-color: var(--btn-primary-bg-active);
    box-shadow: var(--btn-shadow-sm);
    transform: translateY(0);
}

.btn-lf-primary:focus-visible {
    box-shadow: var(--btn-focus-ring), var(--btn-shadow);
}

/* =====================================================
   4. SECONDARY - Acciones secundarias
   ===================================================== */
.btn-lf-secondary {
    background-color: var(--btn-secondary-bg);
    border-color: var(--btn-secondary-border);
    color: var(--btn-secondary-text);
}

.btn-lf-secondary:hover {
    background-color: var(--btn-secondary-bg-hover);
    border-color: var(--btn-secondary-border);
    color: var(--btn-secondary-text);
}

.btn-lf-secondary:active {
    background-color: var(--btn-secondary-bg-active);
}

/* =====================================================
   5. OUTLINE - Variante con borde (menos énfasis)
   ===================================================== */
.btn-lf-outline {
    background-color: transparent;
    border-color: var(--btn-secondary-border);
    color: var(--btn-secondary-text);
}

.btn-lf-outline:hover {
    background-color: var(--btn-secondary-bg);
    border-color: var(--btn-secondary-border);
    color: var(--btn-secondary-text);
}

.btn-lf-outline:active {
    background-color: var(--btn-secondary-bg-hover);
}

/* Outline Primary */
.btn-lf-outline-primary {
    background-color: transparent;
    border-color: var(--btn-primary-bg);
    color: var(--btn-primary-bg);
}

.btn-lf-outline-primary:hover {
    background-color: var(--btn-primary-bg);
    border-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
}

.btn-lf-outline-primary:active {
    background-color: var(--btn-primary-bg-hover);
}

/* =====================================================
   6. GHOST - Sin fondo ni borde (mínimo énfasis)
   ===================================================== */
.btn-lf-ghost {
    background-color: transparent;
    border-color: transparent;
    color: var(--btn-ghost-text);
}

.btn-lf-ghost:hover {
    background-color: var(--btn-ghost-bg-hover);
    color: var(--btn-ghost-text-hover);
}

.btn-lf-ghost:active {
    background-color: var(--btn-ghost-bg-active);
}

/* =====================================================
   7. DANGER - Acciones destructivas
   ===================================================== */
.btn-lf-danger {
    background-color: var(--btn-danger-bg);
    border-color: var(--btn-danger-bg);
    color: var(--btn-danger-text);
}

.btn-lf-danger:hover {
    background-color: var(--btn-danger-bg-hover);
    border-color: var(--btn-danger-bg-hover);
    color: var(--btn-danger-text);
    transform: translateY(-1px);
}

.btn-lf-danger:active {
    background-color: var(--btn-danger-bg-active);
    transform: translateY(0);
}

.btn-lf-danger:focus-visible {
    box-shadow: var(--btn-focus-ring-danger);
}

/* Danger Outline */
.btn-lf-danger-outline {
    background-color: transparent;
    border-color: var(--btn-danger-bg);
    color: var(--btn-danger-bg);
}

.btn-lf-danger-outline:hover {
    background-color: var(--btn-danger-bg);
    color: var(--btn-danger-text);
}

/* Danger Ghost */
.btn-lf-danger-ghost {
    background-color: transparent;
    border-color: transparent;
    color: var(--btn-danger-bg);
}

.btn-lf-danger-ghost:hover {
    background-color: rgba(155, 44, 44, 0.08);
    color: var(--btn-danger-bg-hover);
}

/* =====================================================
   8. SUCCESS - Confirmaciones positivas
   ===================================================== */
.btn-lf-success {
    background-color: var(--btn-success-bg);
    border-color: var(--btn-success-bg);
    color: var(--btn-success-text);
}

.btn-lf-success:hover {
    background-color: var(--btn-success-bg-hover);
    border-color: var(--btn-success-bg-hover);
    transform: translateY(-1px);
}

.btn-lf-success:active {
    background-color: var(--btn-success-bg-active);
    transform: translateY(0);
}

.btn-lf-success:focus-visible {
    box-shadow: var(--btn-focus-ring-success);
}

/* =====================================================
   9. TAMAÑOS
   ===================================================== */
/* Small */
.btn-lf-sm {
    padding: 0.375rem 0.875rem;
    font-size: 0.8125rem;
    border-radius: 0.3125rem;
    gap: 0.375rem;
}

/* Large */
.btn-lf-lg {
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    border-radius: 0.4375rem;
    gap: 0.625rem;
}

/* =====================================================
   10. ICON BUTTON - Solo icono (acciones en tablas)
   ===================================================== */
.btn-lf-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border-radius: 0.375rem;
    background-color: transparent;
    border: 1px solid transparent;
    color: #6b7280;
    cursor: pointer;
    transition: var(--btn-transition);
}

.btn-lf-icon:hover {
    background-color: #f3f4f6;
    color: #374151;
}

.btn-lf-icon:active {
    background-color: #e5e7eb;
}

.btn-lf-icon:focus-visible {
    outline: none;
    box-shadow: var(--btn-focus-ring);
}

.btn-lf-icon i,
.btn-lf-icon svg {
    font-size: 1rem;
    width: 1rem;
    height: 1rem;
}

/* Icon button sizes */
.btn-lf-icon-sm {
    width: 1.75rem;
    height: 1.75rem;
}

.btn-lf-icon-sm i,
.btn-lf-icon-sm svg {
    font-size: 0.875rem;
}

.btn-lf-icon-lg {
    width: 2.75rem;
    height: 2.75rem;
}

.btn-lf-icon-lg i,
.btn-lf-icon-lg svg {
    font-size: 1.125rem;
}

/* Icon button variants */
.btn-lf-icon-primary:hover {
    background-color: rgba(30, 58, 95, 0.08);
    color: var(--btn-primary-bg);
}

.btn-lf-icon-danger:hover {
    background-color: rgba(155, 44, 44, 0.08);
    color: var(--btn-danger-bg);
}

.btn-lf-icon-success:hover {
    background-color: rgba(39, 103, 73, 0.08);
    color: var(--btn-success-bg);
}

/* =====================================================
   11. ESTADOS
   ===================================================== */
/* Disabled */
.btn-lf:disabled,
.btn-lf.disabled {
    background-color: var(--btn-disabled-bg);
    border-color: var(--btn-disabled-border);
    color: var(--btn-disabled-text);
    cursor: not-allowed;
    pointer-events: none;
    box-shadow: none;
    transform: none;
}

.btn-lf-ghost:disabled,
.btn-lf-ghost.disabled {
    background-color: transparent;
    border-color: transparent;
}

/* Loading */
.btn-lf-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-lf-loading::after {
    content: "";
    position: absolute;
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-radius: 50%;
    border-right-color: transparent;
    animation: btn-spinner 0.6s linear infinite;
}

.btn-lf-primary.btn-lf-loading::after {
    border-color: rgba(255, 255, 255, 0.3);
    border-right-color: transparent;
    border-top-color: white;
}

.btn-lf-secondary.btn-lf-loading::after,
.btn-lf-ghost.btn-lf-loading::after {
    border-color: rgba(0, 0, 0, 0.15);
    border-right-color: transparent;
    border-top-color: var(--btn-secondary-text);
}

@keyframes btn-spinner {
    to {
        transform: rotate(360deg);
    }
}

/* =====================================================
   12. GRUPOS DE BOTONES
   ===================================================== */
.btn-lf-group {
    display: inline-flex;
    gap: 0.5rem;
}

.btn-lf-group-sm {
    gap: 0.375rem;
}

/* Grupo conectado (sin gap) */
.btn-lf-group-connected {
    gap: 0;
}

.btn-lf-group-connected .btn-lf {
    border-radius: 0;
}

.btn-lf-group-connected .btn-lf:first-child {
    border-top-left-radius: 0.375rem;
    border-bottom-left-radius: 0.375rem;
}

.btn-lf-group-connected .btn-lf:last-child {
    border-top-right-radius: 0.375rem;
    border-bottom-right-radius: 0.375rem;
}

.btn-lf-group-connected .btn-lf:not(:first-child) {
    margin-left: -1px;
}

/* =====================================================
   13. BOTÓN DE ACCIÓN EN TABLAS
   ===================================================== */
.btn-lf-table-action {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: #4b5563;
    background-color: transparent;
    border: 1px solid #e5e7eb;
    border-radius: 0.3125rem;
    cursor: pointer;
    transition: var(--btn-transition);
}

.btn-lf-table-action:hover {
    background-color: #f9fafb;
    border-color: #d1d5db;
    color: #1f2937;
}

.btn-lf-table-action:active {
    background-color: #f3f4f6;
}

.btn-lf-table-action i {
    font-size: 0.875rem;
    opacity: 0.7;
}

/* =====================================================
   14. LINK BUTTON (parece texto pero es clickeable)
   ===================================================== */
.btn-lf-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.5rem;
    margin: -0.25rem -0.5rem;
    font-size: inherit;
    font-weight: 500;
    color: var(--btn-primary-bg);
    background: none;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: var(--btn-transition);
}

.btn-lf-link:hover {
    color: var(--btn-primary-bg-hover);
    background-color: rgba(30, 58, 95, 0.04);
    text-decoration: none;
}

.btn-lf-link:active {
    background-color: rgba(30, 58, 95, 0.08);
}

/* =====================================================
   15. DROPDOWN TRIGGER
   ===================================================== */
.btn-lf-dropdown {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-lf-dropdown::after {
    content: "";
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    opacity: 0.6;
    transition: transform 0.2s ease;
}

.btn-lf-dropdown[aria-expanded="true"]::after {
    transform: rotate(180deg);
}

/* =====================================================
   16. FULL WIDTH
   ===================================================== */
.btn-lf-block {
    display: flex;
    width: 100%;
}

/* =====================================================
   17. ACCIONES FLOTANTES (FAB)
   ===================================================== */
.btn-lf-fab {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 3.5rem;
    height: 3.5rem;
    padding: 0;
    border-radius: 50%;
    box-shadow: var(--btn-shadow-md);
    z-index: 1000;
}

.btn-lf-fab:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.btn-lf-fab i,
.btn-lf-fab svg {
    font-size: 1.25rem;
}

/* =====================================================
   18. UTILIDADES
   ===================================================== */
/* Sin padding lateral (para icon + text compacto) */
.btn-lf-compact {
    padding-left: 0.875rem;
    padding-right: 0.875rem;
}

/* Pill shape */
.btn-lf-pill {
    border-radius: 9999px;
}

/* Elevated (con más sombra) */
.btn-lf-elevated {
    box-shadow: var(--btn-shadow);
}

.btn-lf-elevated:hover {
    box-shadow: var(--btn-shadow-md);
}