/* ============================================================
   ACADEMIKA PLUS — SISTEMA DE BOTONES
   Requiere: variables.css cargado previamente en el <head>
   ============================================================ */

/* ----------------------------------------------------------
   BASE — atributos compartidos por todos los botones
---------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    border: none;
    border-radius: var(--radius-full);
    padding: 12px 28px;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.3px;
    line-height: 1;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}

/* ----------------------------------------------------------
   BTN-PRIMARY — acción principal (Guardar, Enviar, Solicitar)
---------------------------------------------------------- */
.btn-primary {
    background: linear-gradient(135deg, #009245, #006630);
    color: #ffffff !important;
    border: none;
    box-shadow: 0 4px 15px rgba(0, 146, 69, 0.35);
}

.btn-primary:hover:not(:disabled):not(.btn-loading) {
    background: linear-gradient(135deg, #00a84f, #009245);
    box-shadow: 0 6px 20px rgba(0, 146, 69, 0.50);
    transform: translateY(-1px);
    color: #ffffff !important;
    text-decoration: none;
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 146, 69, 0.30);
}

/* ----------------------------------------------------------
   BTN-SECONDARY — acción secundaria (Cancelar, Volver, Ver más)
---------------------------------------------------------- */
.btn-secondary {
    background: transparent;
    color: var(--color-primary) !important;
    border: 1.5px solid var(--color-primary);
    box-shadow: none;
    font-weight: 600;
    padding: 11px 26px;
}

.btn-secondary:hover:not(:disabled):not(.btn-loading) {
    background: rgba(0, 146, 69, 0.08);
    border-color: var(--color-primary-dark);
    color: var(--color-primary-dark) !important;
    transform: translateY(-1px);
    text-decoration: none;
}

.btn-secondary:active:not(:disabled) {
    transform: translateY(0);
}

/* ----------------------------------------------------------
   BTN-DARK — botón oscuro (tarjetas, hero sections)
---------------------------------------------------------- */
.btn-dark {
    background: var(--color-dark);
    color: #ffffff !important;
    border: none;
    box-shadow: 0 4px 12px rgba(18, 22, 41, 0.20);
    font-weight: 600;
}

.btn-dark:hover:not(:disabled):not(.btn-loading) {
    background: #1e2a45;
    box-shadow: 0 6px 18px rgba(18, 22, 41, 0.30);
    transform: translateY(-1px);
    color: #ffffff !important;
    text-decoration: none;
}

.btn-dark:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(18, 22, 41, 0.20);
}

/* ----------------------------------------------------------
   BTN-GHOST — mínima jerarquía (Ver información, links)
---------------------------------------------------------- */
.btn-ghost {
    background: transparent;
    color: var(--color-blue) !important;
    border: 1px solid rgba(3, 30, 148, 0.25);
    box-shadow: none;
    font-weight: 600;
    padding: 10px 22px;
}

.btn-ghost:hover:not(:disabled):not(.btn-loading) {
    background: rgba(3, 30, 148, 0.06);
    border-color: var(--color-blue);
    color: var(--color-blue) !important;
    transform: translateY(-1px);
    text-decoration: none;
}

.btn-ghost:active:not(:disabled) {
    transform: translateY(0);
}

/* ----------------------------------------------------------
   BTN-DANGER — acciones destructivas (Eliminar, Cancelar pedido)
---------------------------------------------------------- */
.btn-danger {
    background: linear-gradient(135deg, #cc3300, #aa2200);
    color: #ffffff !important;
    border: none;
    box-shadow: 0 4px 12px rgba(204, 51, 0, 0.30);
    font-weight: 700;
}

.btn-danger:hover:not(:disabled):not(.btn-loading) {
    background: linear-gradient(135deg, #dd3300, #cc3300);
    box-shadow: 0 6px 18px rgba(204, 51, 0, 0.45);
    transform: translateY(-1px);
    color: #ffffff !important;
    text-decoration: none;
}

.btn-danger:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(204, 51, 0, 0.25);
}

/* ----------------------------------------------------------
   BTN-GLASS — paneles con efecto cristal
---------------------------------------------------------- */
.btn-glass {
    background: var(--glass-bg-dark);
    backdrop-filter: var(--glass-blur-sm);
    -webkit-backdrop-filter: var(--glass-blur-sm);
    border: var(--border-glass);
    color: inherit !important;
    border-radius: var(--radius-md);
    font-weight: 600;
    box-shadow: none;
}

.btn-glass:hover:not(:disabled):not(.btn-loading) {
    background: var(--glass-bg-dark-hover);
    transform: translateY(-1px);
    text-decoration: none;
}

.btn-glass:active:not(:disabled) {
    transform: translateY(0);
}

/* modo claro */
:root:not(.dark) .btn-glass {
    background: var(--glass-bg-light);
    border-color: var(--glass-border-light);
}

:root:not(.dark) .btn-glass:hover:not(:disabled):not(.btn-loading) {
    background: var(--glass-bg-light-hover);
}

/* ----------------------------------------------------------
   BTN-ICON — solo ícono (tablas: editar, eliminar, ver…)
---------------------------------------------------------- */
.btn-icon {
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    width: 36px;
    height: 36px;
    min-width: 36px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-dark);
    font-size: 0.95rem;
    font-weight: 400;
    transition: var(--transition-fast);
    cursor: pointer;
    box-shadow: none;
    letter-spacing: 0;
}

/* Variantes de acción en btn-icon */
.btn-icon:hover,
.btn-icon.btn-icon-edit:hover {
    background: rgba(74, 175, 233, 0.15);
    color: var(--color-lblue) !important;
    transform: none;
}

.btn-icon.btn-icon-delete:hover {
    background: rgba(204, 51, 0, 0.12);
    color: var(--color-error) !important;
}

.btn-icon.btn-icon-view:hover {
    background: rgba(0, 146, 69, 0.12);
    color: var(--color-success) !important;
}

.btn-icon.btn-icon-approve:hover {
    background: rgba(0, 146, 69, 0.12);
    color: var(--color-success) !important;
}

.btn-icon.btn-icon-reject:hover {
    background: rgba(204, 51, 0, 0.12);
    color: var(--color-error) !important;
}

/* ----------------------------------------------------------
   TAMAÑOS
---------------------------------------------------------- */
.btn-sm {
    padding: 8px 18px;
    font-size: 0.8rem;
    letter-spacing: 0.2px;
}

/* .btn-md es el default */
.btn-md {
    padding: 12px 28px;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 14px 36px;
    font-size: 1rem;
}

/* ----------------------------------------------------------
   ESTADO DISABLED — común a todas las variantes
---------------------------------------------------------- */
.btn:disabled,
.btn[disabled],
.btn[aria-disabled="true"] {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
    pointer-events: none;
}

/* ----------------------------------------------------------
   LOADING STATE — spinner incrustado
   Añadir clase .btn-loading al JS para activar
---------------------------------------------------------- */
.btn-loading {
    opacity: 0.75;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-loading .btn-text {
    opacity: 0.85;
}

/* Spinner SVG generado por CSS (sin imágenes externas) */
.btn-loading::before {
    content: "";
    display: inline-block;
    width: 1em;
    height: 1em;
    min-width: 14px;
    min-height: 14px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: btn-spin 0.65s linear infinite;
    flex-shrink: 0;
}

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

/* ----------------------------------------------------------
   GRUPO DE BOTONES (row / columna)
---------------------------------------------------------- */
.btn-group {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn-group-col {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* ----------------------------------------------------------
   FULL WIDTH
---------------------------------------------------------- */
.btn-block {
    width: 100%;
    justify-content: center;
}

/* ----------------------------------------------------------
   ANULACIONES DARK MODE para variantes con borde/ghost
---------------------------------------------------------- */
.dark .btn-secondary {
    color: #33ff92 !important;
    /* verde brillante de la escala secundaria en dark */
    border-color: #33ff92;
}

.dark .btn-secondary:hover:not(:disabled):not(.btn-loading) {
    background: rgba(51, 255, 146, 0.10);
    border-color: #00cc5f;
    color: #00cc5f !important;
}

.dark .btn-ghost {
    color: var(--color-lblue) !important;
    border-color: rgba(74, 175, 233, 0.35);
}

.dark .btn-ghost:hover:not(:disabled):not(.btn-loading) {
    background: rgba(74, 175, 233, 0.10);
    border-color: var(--color-lblue);
    color: var(--color-lblue) !important;
}

.dark .btn-icon {
    color: #94a3b8;
}