/**
 * My Clinic History - Layout Principal
 * Sidebar acordeón, barra superior, sistema de pestañas FIFO (máximo 4) y contenedor principal
 */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--app-font);
    font-size: var(--app-font-size-base);
    background-color: var(--bg-body);
    color: var(--text-primary);
    overflow-x: hidden;
    height: 100vh;
    display: flex;
}

/* =============================================================================
   1. SIDEBAR LATERAL (Contraído por defecto)
   ============================================================================= */

#app-sidebar {
    width: var(--sidebar-width-collapsed);
    height: 100vh;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-sidebar);
    transition: width var(--app-transition-normal);
    overflow: hidden;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
}

#app-sidebar.is-expanded {
    width: var(--sidebar-width-expanded);
    box-shadow: var(--shadow-lg);
}

/* Cabecera del Sidebar */
.sidebar-header {
    padding: 1rem 0.85rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-height: 84px;
}

.sidebar-logo {
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: var(--app-radius-md);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: var(--primary-contrast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 800;
    box-shadow: var(--shadow-sm);
}

.sidebar-brand-info {
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--app-transition-fast);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#app-sidebar.is-expanded .sidebar-brand-info {
    opacity: 1;
    visibility: visible;
}

.sidebar-system-name {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.sidebar-doctor-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary);
    margin-top: 2px;
}

.sidebar-version-badge {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Buscador Interno de Páginas */
.sidebar-search-box {
    padding: 0.65rem 0.85rem;
    border-bottom: 1px solid var(--border-color);
    display: none;
}

#app-sidebar.is-expanded .sidebar-search-box {
    display: block;
}

.sidebar-search-input {
    width: 100%;
    padding: 0.4rem 0.65rem;
    border-radius: var(--app-radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-primary);
    font-size: 0.8rem;
    outline: none;
    transition: border-color var(--app-transition-fast);
}

.sidebar-search-input:focus {
    border-color: var(--border-focus);
}

/* Navegación y Acordeón */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.5rem 0;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}
.sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.nav-section {
    margin-bottom: 0.25rem;
}

.nav-section-title {
    width: 100%;
    padding: 0.65rem 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: background var(--app-transition-fast), color var(--app-transition-fast);
    position: relative;
}

.nav-section-title:hover {
    background: var(--bg-sidebar-hover);
    color: var(--text-primary);
}

.nav-section-icon {
    font-size: 1.1rem;
    min-width: 24px;
    text-align: center;
    color: var(--primary);
}

.nav-section-text {
    flex: 1;
    opacity: 0;
    transition: opacity var(--app-transition-fast);
}

#app-sidebar.is-expanded .nav-section-text {
    opacity: 1;
}

.nav-section-arrow {
    font-size: 0.75rem;
    transition: transform var(--app-transition-fast);
    opacity: 0;
}

#app-sidebar.is-expanded .nav-section-arrow {
    opacity: 1;
}

.nav-section.is-open .nav-section-arrow {
    transform: rotate(90deg);
}

/* Lista de páginas dentro de la sección acordeón */
.nav-pages-list {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--app-transition-normal) ease-out;
    background: var(--bg-body);
}

.nav-section.is-open .nav-pages-list {
    max-height: 400px;
}

.nav-page-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.55rem 0.9rem 0.55rem 2.8rem;
    background: transparent;
    border-top: none;
    border-right: none;
    border-bottom: none;
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--app-transition-fast);
    border-left: 3px solid transparent;
}

.nav-page-item:hover {
    color: var(--primary);
    background: var(--bg-sidebar-hover);
}

.nav-page-item.is-active {
    color: var(--primary);
    font-weight: 700;
    background: var(--bg-sidebar-active);
    border-left-color: var(--primary);
}

/* Pie del Sidebar */
.sidebar-footer {
    padding: 0.75rem 0.85rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.sidebar-footer-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.55rem 0.65rem;
    background: transparent;
    border: none;
    border-radius: var(--app-radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--app-transition-fast);
}

.sidebar-footer-btn:hover {
    background: var(--bg-sidebar-hover);
    color: var(--text-primary);
}

.sidebar-footer-btn.btn-logout:hover {
    background: var(--danger-light);
    color: var(--danger);
}

/* =============================================================================
   2. CONTENIDO PRINCIPAL Y APP SHELL
   ============================================================================= */

#app-main {
    flex: 1;
    margin-left: var(--sidebar-width-collapsed);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    transition: margin-left var(--app-transition-normal);
}

#app-sidebar.is-expanded ~ #app-main {
    margin-left: var(--sidebar-width-expanded);
}

/* Barra Superior (Top Header) */
.app-topbar {
    height: var(--topbar-height);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    gap: 1rem;
    z-index: var(--z-topbar);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-sidebar-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: var(--app-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--app-transition-fast);
}

.btn-sidebar-toggle:hover {
    background: var(--bg-body);
    color: var(--primary);
    border-color: var(--primary);
}

/* Buscador Inteligente Global de Pacientes */
.global-patient-search {
    position: relative;
    width: 320px;
    max-width: 100%;
}

.global-patient-search input {
    width: 100%;
    padding: 0.45rem 0.85rem 0.45rem 2.2rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-primary);
    font-size: 0.82rem;
    outline: none;
    transition: all var(--app-transition-fast);
}

.global-patient-search input:focus {
    border-color: var(--primary);
    background: var(--bg-surface);
    box-shadow: 0 0 0 3px var(--primary-light);
    width: 400px;
}

.global-patient-search i {
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.subscription-pill {
    padding: 0.25rem 0.65rem;
    border-radius: 12px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    background: var(--success-light);
    color: var(--success);
}

.subscription-pill.is-trial {
    background: var(--warning-light);
    color: var(--warning);
}

/* =============================================================================
   3. SISTEMA DE PESTAÑAS DINÁMICAS (TABS FIFO - MÁXIMO 4)
   ============================================================================= */

.app-tabs-bar {
    height: var(--tabs-height);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: flex-end;
    padding: 0 0.75rem;
    gap: 0.35rem;
    overflow-x: auto;
    z-index: var(--z-tabs);
}

.app-tabs-bar::-webkit-scrollbar {
    height: 0;
}

.tab-item {
    height: 38px;
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0 0.95rem;
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: var(--app-radius-sm) var(--app-radius-sm) 0 0;
    background: var(--bg-body);
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    transition: all var(--app-transition-fast);
    position: relative;
    max-width: 220px;
}

.tab-item:hover {
    color: var(--text-primary);
    background: var(--bg-surface);
}

.tab-item.is-active {
    color: var(--primary);
    background: var(--bg-surface);
    border-top: 2px solid var(--primary);
    font-weight: 700;
}

.tab-icon {
    font-size: 0.85rem;
}

.tab-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tab-close-btn {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.7rem;
    cursor: pointer;
    transition: all var(--app-transition-fast);
}

.tab-close-btn:hover {
    background: var(--danger-light);
    color: var(--danger);
}

/* Área de contenido de pestañas */
.app-viewport {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 1.25rem;
    position: relative;
}

.page-view {
    display: none;
    animation: fadeIn var(--app-transition-fast) ease-in-out;
}

.page-view.is-visible {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(3px); }
    to { opacity: 1; transform: translateY(0); }
}