/* CollabX — Application Shell Layout (Stitch: CollabX SaaS Platform Frontend — Blue) */

/* ============================================================
   APP SHELL STRUCTURE
   ============================================================ */
.app-container {
    display: flex;
    min-height: 100vh;
    background-color: var(--color-bg);
    min-width: 0;
    max-width: 100%;
}

/* ============================================================
   SIDEBAR (Fixed Left, 248px) — Clean, modern workspace sidebar
   ============================================================ */
.app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background-color: var(--color-sidebar-bg, var(--color-surface));
    border-right: 1px solid var(--color-border);
    box-shadow: var(--shadow-sidebar);
    z-index: var(--z-sidebar);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    transition: transform var(--transition-normal), background-color var(--transition-fast), border-color var(--transition-fast);
    /* Hide scrollbar — all browsers */
    scrollbar-width: none;        /* Firefox */
    -ms-overflow-style: none;     /* IE / Edge */
}
.app-sidebar::-webkit-scrollbar {
    display: none;                /* Chrome / Safari / WebKit */
}

.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 var(--space-5);
    flex-shrink: 0;
    border-bottom: 1px solid var(--color-border-light);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3, 12px);
    text-decoration: none;
}

/* Sidebar logo badge — CollabX Signature Royal Blue */
.sidebar-logo-badge {
    display: flex !important;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-lg, 12px);
    background: linear-gradient(135deg, #1F5EF2, #154ECC);
    align-items: center;
    justify-content: center;
    color: #ffffff !important;
    box-shadow: 0 4px 14px rgba(31, 94, 242, 0.32);
    flex-shrink: 0;
}

.sidebar-logo-badge .material-symbols-outlined {
    font-size: 20px;
    color: #ffffff !important;
}

.sidebar-logo-text {
    display: flex;
    flex-direction: column;
}

.sidebar-logo-title {
    font-size: var(--text-headline-sm, 16px);
    font-weight: 700;
    color: var(--color-navy);
    line-height: 1.1;
    letter-spacing: -0.01em;
}

.sidebar-logo-subtitle {
    font-size: 10px;
    font-weight: 600;
    color: var(--color-text-muted, #64748B);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
}

.sidebar-logo-powered {
    font-size: 9px;
    font-weight: 400;
    color: var(--color-text-muted);
    margin-top: 2px;
    opacity: 0.85;
}

/* Navigation System */
.sidebar-nav {
    flex: 1;
    padding: var(--space-4) var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-6); /* Space between groups */
}

.nav-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.nav-section-title {
    font-size: var(--text-xxs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    padding: 0 var(--space-2);
    margin-bottom: var(--space-1);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 9px 14px;
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

/* Subtle Sidebar Hover State — Restrained & Professional */
.nav-item:hover {
    background-color: rgba(15, 23, 42, 0.04);
    color: var(--color-navy);
}

.nav-item.active {
    background-color: var(--color-primary-container);
    color: var(--color-on-primary);
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(31, 94, 242, 0.28);
}

.nav-item.active:hover {
    background-color: var(--color-primary-hover);
    color: var(--color-on-primary);
}

.nav-item-icon {
    font-size: 18px;
}

/* Responsive 4-Column KPI Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4, 16px);
    margin-bottom: var(--space-6, 24px);
    width: 100%;
}

@media (max-width: 1023px) {
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 639px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }
}

/* Sidebar Footer (Version/Status) */
.sidebar-footer {
    padding: var(--space-5);
    border-top: 1px solid var(--color-border-light);
}

.sidebar-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3);
    background-color: var(--color-surface-low);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-success);
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    70% { box-shadow: 0 0 0 5px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.status-label {
    font-size: var(--text-xxs);
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
}


/* ============================================================
   HEADER (Fixed Top, 64px, Right of Sidebar)
   ============================================================ */
.app-header {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: var(--header-height);
    background-color: var(--color-header-bg, rgba(255, 255, 255, 0.85));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-header);
    z-index: var(--z-header);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-7);
    min-width: 0;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

/* Search */
.header-search {
    position: relative;
    width: 100%;
    max-width: 400px;
}
@media (max-width: 1023px) {
    .header-search {
        display: none !important;
    }
}

.header-search .material-symbols-outlined {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 18px;
}

.header-search input {
    width: 100%;
    height: 40px;
    padding: 0 56px 0 40px;
    background-color: var(--color-surface-low);
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--text-base);
    color: var(--color-navy);
    transition: all var(--transition-fast);
}

.header-search input::placeholder {
    color: var(--color-text-muted);
}

.header-search input:focus {
    outline: none;
    background-color: var(--color-surface);
    border: 1px solid var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

@media (max-width: 480px) {
    .header-search input {
        padding: 0 32px 0 36px;
    }
    .search-shortcut {
        display: none;
    }
}

.search-shortcut {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
    font-size: var(--text-xxs);
    font-weight: 600;
    color: var(--color-text-muted);
    pointer-events: none;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-shrink: 0;
}

@media (max-width: 767px) {
    .header-actions {
        gap: var(--space-2);
        flex-shrink: 1;
        min-width: 0;
    }
    
    .desktop-only {
        display: none !important;
    }
    
    .theme-label {
        display: none !important;
    }
}

.notification-btn {
    position: relative;
    padding: var(--space-2);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-btn:hover {
    background-color: var(--color-surface-low);
    color: var(--color-navy);
}

.notification-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 16px;
    height: 16px;
    background-color: var(--color-error);
    color: #ffffff;
    font-size: 10px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-divider {
    width: 1px;
    height: 20px;
    background-color: var(--color-border-light);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1F5EF2, #154ECC);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(31, 94, 242, 0.28);
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-navy);
    line-height: 1.2;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.user-status {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
    padding: 2px 6px;
    border-radius: var(--radius-full);
}

.user-email {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: 1.2;
    margin-top: 2px;
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--space-2);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
}

.logout-btn:hover {
    color: var(--color-danger);
    background-color: var(--color-danger-bg);
}


/* ============================================================
   MAIN CONTENT AREA
   ============================================================ */
.app-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    margin-top: var(--header-height);
    padding: var(--content-padding);
    display: flex;
    flex-direction: column;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
}

/* Page Header */
.page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: var(--space-7);
    gap: var(--space-4);
}

.page-title-group {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

.page-eyebrow {
    font-size: var(--text-xxs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-1);
}

.page-title {
    font-size: var(--text-display);
    font-weight: 700;
    color: var(--color-navy);
    letter-spacing: -0.025em;
    margin: 0;
    line-height: 1.2;
    overflow-wrap: break-word;
    word-break: break-word;
}

.page-subtitle {
    font-size: var(--text-base);
    color: var(--color-text-muted);
    margin: var(--space-1) 0 0;
}

.text-wrap-dynamic {
    overflow-wrap: anywhere;
    word-break: break-word;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
    min-width: 0;
}

/* Dashboard Specific Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-7);
}


/* ============================================================
   MOBILE RESPONSIVE
   ============================================================ */
.mobile-menu-btn {
    display: none;
    font-size: 24px;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
}

@media (max-width: 1279px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1023px) {
    .app-sidebar {
        transform: translateX(-100%);
    }

    .app-sidebar.open {
        transform: translateX(0);
        box-shadow: var(--shadow-xl);
    }

    .app-header {
        left: 0;
        padding: 0 var(--space-4);
    }

    .app-main {
        margin-left: 0;
        padding: var(--space-5) var(--space-4);
    }

    .mobile-menu-btn {
        display: block;
    }

    /* We hide the form itself on mobile to make space, not the whole container */
    .header-search form {
        display: none;
    }

    .user-info {
        display: none;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }
}

@media (max-width: 480px) {
    .app-main {
        padding: var(--space-4) var(--space-3);
    }
    
    .app-header {
        padding: 0 var(--space-3);
    }
    
    .header-left {
        gap: 8px;
    }
}