/**
 * CLAUDIA - Unified Sidebar Component v1.0
 *
 * Especificación unificada para todos los sidebars del ecosistema CLAUDIA
 * Aplica a: Live Browser, Dashboard, Config, Metering, etc.
 */

/* ============================================
   CSS VARIABLES - Sidebar Tokens
   ============================================ */
:root {
    /* Dimensiones */
    --sidebar-width: 280px;
    --sidebar-width-collapsed: 56px;
    --sidebar-header-height: 60px;

    /* Espaciado */
    --sidebar-header-padding: 16px 20px;
    --sidebar-list-padding: 12px;
    --sidebar-item-padding: 12px 16px;
    --sidebar-item-gap: 8px;
    --sidebar-icon-text-gap: 12px;

    /* Items */
    --sidebar-item-height: 48px;
    --sidebar-item-radius: 8px;
    --sidebar-icon-size: 20px;

    /* Tipografía */
    --sidebar-title-size: 18px;
    --sidebar-title-weight: 700;
    --sidebar-item-size: 14px;
    --sidebar-item-weight: 500;
    --sidebar-item-weight-active: 600;
    --sidebar-item-line-height: 1.4;

    /* Colores */
    --sidebar-bg: linear-gradient(180deg, #1a2a3f 0%, #0f1a2b 100%);
    --sidebar-bg-solid: #14202e;
    --sidebar-border: rgba(255, 255, 255, 0.1);
    --sidebar-title-color: #00D4AA;
    --sidebar-text: rgba(255, 255, 255, 0.9);
    --sidebar-text-dim: rgba(255, 255, 255, 0.6);
    --sidebar-item-bg: transparent;
    --sidebar-item-bg-hover: rgba(255, 255, 255, 0.08);
    --sidebar-item-bg-active: rgba(0, 212, 170, 0.15);
    --sidebar-item-border-active: #00D4AA;
    --sidebar-close-color: rgba(255, 255, 255, 0.6);
    --sidebar-close-hover: rgba(255, 255, 255, 0.9);

    /* Transiciones */
    --sidebar-transition: 0.3s ease;

    /* Z-index */
    --sidebar-overlay-z: 4900;
    --sidebar-z: 5000;
}

/* ============================================
   SIDEBAR CONTAINER
   ============================================ */
.unified-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100%;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
    z-index: var(--sidebar-z);
    transition: transform var(--sidebar-transition), width var(--sidebar-transition);
}

@media (max-width: 768px) {
    .unified-sidebar {
        transform: translateX(-100%);
    }
    .unified-sidebar.active {
        transform: translateX(0);
    }
}

/* ============================================
   SIDEBAR HEADER
   ============================================ */
.unified-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--sidebar-header-height);
    padding: var(--sidebar-header-padding);
    border-bottom: 1px solid var(--sidebar-border);
    background: rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}

.unified-sidebar-title {
    font-size: var(--sidebar-title-size);
    font-weight: var(--sidebar-title-weight);
    color: var(--sidebar-title-color);
    margin: 0;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.unified-sidebar-title svg {
    width: 24px;
    height: 24px;
}

.unified-sidebar-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--sidebar-close-color);
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-size: 24px;
    line-height: 1;
}

.unified-sidebar-close:hover {
    color: var(--sidebar-close-hover);
    background: rgba(255, 255, 255, 0.1);
}

/* ============================================
   SIDEBAR CONTENT / LIST
   ============================================ */
.unified-sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--sidebar-list-padding);
}

.unified-sidebar-list {
    display: flex;
    flex-direction: column;
    gap: var(--sidebar-item-gap);
    list-style: none;
    margin: 0;
    padding: 0;
}

/* ============================================
   SIDEBAR ITEM
   ============================================ */
.unified-sidebar-item {
    display: flex;
    align-items: center;
    min-height: var(--sidebar-item-height);
    padding: var(--sidebar-item-padding);
    gap: var(--sidebar-icon-text-gap);
    background: var(--sidebar-item-bg);
    border: 1px solid transparent;
    border-radius: var(--sidebar-item-radius);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
}

.unified-sidebar-item:hover {
    background: var(--sidebar-item-bg-hover);
    border-color: var(--sidebar-border);
}

.unified-sidebar-item.active {
    background: var(--sidebar-item-bg-active);
    border-color: var(--sidebar-item-border-active);
}

.unified-sidebar-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--sidebar-item-border-active);
    border-radius: 3px 0 0 3px;
}

/* ============================================
   SIDEBAR ICON
   ============================================ */
.unified-sidebar-icon {
    width: var(--sidebar-icon-size);
    height: var(--sidebar-icon-size);
    flex-shrink: 0;
    color: var(--sidebar-text-dim);
    transition: color 0.2s ease;
}

.unified-sidebar-item:hover .unified-sidebar-icon {
    color: var(--sidebar-title-color);
}

.unified-sidebar-item.active .unified-sidebar-icon {
    color: var(--sidebar-title-color);
}

/* ============================================
   SIDEBAR TEXT
   ============================================ */
.unified-sidebar-text {
    font-size: var(--sidebar-item-size);
    font-weight: var(--sidebar-item-weight);
    line-height: var(--sidebar-item-line-height);
    color: var(--sidebar-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.unified-sidebar-item.active .unified-sidebar-text {
    font-weight: var(--sidebar-item-weight-active);
    color: #fff;
}

.unified-sidebar-subtext {
    font-size: 11px;
    color: var(--sidebar-text-dim);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 2px;
}

/* ============================================
   SIDEBAR BADGE & STATUS
   ============================================ */
.unified-sidebar-badge {
    background: var(--sidebar-title-color);
    color: #0f1a2b;
    font-size: 10px;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    padding: 0 6px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
}

.unified-sidebar-status {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-left: 8px;
}

.unified-sidebar-status.connected {
    background: #00D4AA;
    box-shadow: 0 0 6px #00D4AA;
}

.unified-sidebar-status.disconnected {
    background: #ff4444;
}

.unified-sidebar-status.warning {
    background: #ffaa00;
    animation: sidebar-pulse 1.5s infinite;
}

@keyframes sidebar-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ============================================
   SIDEBAR FOOTER
   ============================================ */
.unified-sidebar-footer {
    padding: var(--sidebar-list-padding);
    border-top: 1px solid var(--sidebar-border);
    background: rgba(0, 0, 0, 0.2);
}

.unified-sidebar-action {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px 16px;
    background: rgba(0, 212, 170, 0.1);
    border: 1px dashed rgba(0, 212, 170, 0.3);
    border-radius: var(--sidebar-item-radius);
    color: var(--sidebar-title-color);
    font-size: var(--sidebar-item-size);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.unified-sidebar-action:hover {
    background: rgba(0, 212, 170, 0.2);
    border-color: var(--sidebar-title-color);
}

.unified-sidebar-action svg {
    width: 16px;
    height: 16px;
}

/* ============================================
   OVERLAY
   ============================================ */
.unified-sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: var(--sidebar-overlay-z);
}

.unified-sidebar-overlay.active {
    display: block;
}

/* ============================================
   COLLAPSED STATE
   ============================================ */
.unified-sidebar.collapsed {
    width: var(--sidebar-width-collapsed);
}

.unified-sidebar.collapsed .unified-sidebar-title span,
.unified-sidebar.collapsed .unified-sidebar-text,
.unified-sidebar.collapsed .unified-sidebar-subtext,
.unified-sidebar.collapsed .unified-sidebar-action span {
    display: none;
}

.unified-sidebar.collapsed .unified-sidebar-item {
    justify-content: center;
    padding: 12px;
}

.unified-sidebar.collapsed .unified-sidebar-icon {
    margin: 0;
}

.unified-sidebar.collapsed .unified-sidebar-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    min-width: 14px;
    height: 14px;
    font-size: 9px;
}

/* ============================================
   SECTION DIVIDER
   ============================================ */
.unified-sidebar-divider {
    height: 1px;
    background: var(--sidebar-border);
    margin: 8px 0;
}

.unified-sidebar-section-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--sidebar-text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 8px 16px 4px;
    margin-top: 8px;
}

/* ============================================
   THUMBNAIL PREVIEW
   ============================================ */
.unified-sidebar-preview {
    width: 100%;
    aspect-ratio: 16/10;
    border-radius: 6px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.3);
    margin-bottom: 8px;
    position: relative;
}

.unified-sidebar-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.unified-sidebar-preview-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sidebar-text-dim);
}

.unified-sidebar-preview-placeholder svg {
    width: 32px;
    height: 32px;
    opacity: 0.5;
}

.unified-sidebar-item.has-preview {
    flex-direction: column;
    align-items: stretch;
    padding: 8px;
}

.unified-sidebar-item.has-preview .unified-sidebar-item-row {
    display: flex;
    align-items: center;
    gap: var(--sidebar-icon-text-gap);
}

/* ============================================
   COMPATIBILITY: Legacy .mobile-nav .nav-btn
   Para páginas que usan la estructura existente
   ============================================ */
.mobile-nav .nav-btn,
.mobile-nav-links .nav-btn {
    display: flex;
    align-items: center;
    min-height: var(--sidebar-item-height, 48px);
    padding: var(--sidebar-item-padding, 12px 16px) !important;
    gap: var(--sidebar-icon-text-gap, 12px);
    border-radius: var(--sidebar-item-radius, 8px);
    font-size: var(--sidebar-item-size, 14px);
    font-weight: var(--sidebar-item-weight, 500);
    line-height: var(--sidebar-item-line-height, 1.4);
}

.mobile-nav .nav-btn .nav-icon,
.mobile-nav-links .nav-btn .nav-icon {
    width: var(--sidebar-icon-size, 20px);
    height: var(--sidebar-icon-size, 20px);
    flex-shrink: 0;
}

.mobile-nav .nav-btn.active,
.mobile-nav-links .nav-btn.active {
    font-weight: var(--sidebar-item-weight-active, 600);
}