/* ============================================
   EmpanelCRM — Navigation Sidebar
   Matches EmpanelJMS main-navigation.css
   ============================================ */

.main-navigation {
    position: fixed;
    left: 0; top: 0;
    height: 100vh;
    width: var(--nav-width-expanded);
    background: linear-gradient(180deg, var(--theme-gradient-start) 0%, var(--theme-gradient-end) 100%);
    border-right: 1px solid rgba(255,255,255,0.1);
    transition: width 0.3s cubic-bezier(0.4,0,0.2,1);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    font-family: 'Inter', sans-serif;
}

.main-navigation.collapsed { width: var(--nav-width-collapsed); }

.main-content-area {
    margin-left: var(--nav-width-expanded);
    transition: margin-left 0.3s cubic-bezier(0.4,0,0.2,1);
    min-height: 100vh;
}

/* Header */
.nav-header {
    padding: 20px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
}

.nav-user-profile { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; }

.nav-user-avatar {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    border: 2px solid rgba(255,255,255,0.3);
    cursor: default;
}

.nav-user-avatar.clickable { cursor: pointer; }
.nav-user-avatar.clickable:hover { background: rgba(255,255,255,0.25); transform: scale(1.05); }

.nav-avatar-initials { color: #fff; font-size: 14px; font-weight: 700; letter-spacing: 0.5px; }

.nav-user-info { display: flex; flex-direction: column; min-width: 0; flex: 1; }

.main-navigation.collapsed .nav-user-info { display: none; }
.main-navigation.collapsed .nav-header { justify-content: center; padding: 20px 0; }
.main-navigation.collapsed .nav-user-profile { justify-content: center; flex: none; }

.nav-user-role {
    font-size: 10px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.8px; color: rgba(255,255,255,0.7); margin-bottom: 2px;
}

.nav-user-name {
    font-size: 14px; font-weight: 600; color: #fff;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.nav-toggle-btn {
    background: none; border: none; color: rgba(255,255,255,0.7);
    cursor: pointer; padding: 4px; border-radius: 4px;
    display: flex; align-items: center; justify-content: center;
}
.nav-toggle-btn:hover { background: rgba(255,255,255,0.1); color: #fff; }

/* Brand */
.nav-brand {
    display: flex; align-items: center; gap: 8px;
    padding: 12px 16px 8px;
    color: rgba(255,255,255,0.9);
}
.nav-brand-icon { flex-shrink: 0; }
.nav-brand-text { font-size: 13px; font-weight: 700; letter-spacing: 0.3px; }

/* Menu */
.nav-menu {
    flex: 1; overflow-y: auto; overflow-x: hidden;
    padding: 8px 0;
    display: flex; flex-direction: column;
    gap: 1px;
}

.nav-menu::-webkit-scrollbar { width: 4px; }
.nav-menu::-webkit-scrollbar-track { background: transparent; }
.nav-menu::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 2px; }

.nav-section-label {
    padding: 14px 16px 4px;
    font-size: 9px; font-weight: 700; letter-spacing: 1px;
    text-transform: uppercase; color: rgba(255,255,255,0.45);
}

.nav-item {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 16px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    border-radius: 0;
    transition: all 0.15s;
    font-size: 14px; font-weight: 500;
    position: relative;
    cursor: pointer;
}

.nav-item:hover { background: rgba(255,255,255,0.1); color: #fff; }

.nav-item.active {
    background: rgba(255,255,255,0.15);
    color: #fff;
}
.nav-item.active::before {
    content: '';
    position: absolute; left: 0; top: 0; bottom: 0;
    width: 3px;
    background: #fff;
    border-radius: 0 2px 2px 0;
}

.nav-icon { flex-shrink: 0; }

.main-navigation.collapsed .nav-label { display: none; }
.main-navigation.collapsed .nav-item { justify-content: center; padding: 12px; }
.main-navigation.collapsed .nav-section-label { display: none; }
.main-navigation.collapsed .nav-brand-text { display: none; }

/* Bottom section */
.nav-section-bottom { margin-top: auto; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 8px; }

.nav-item-logout {
    background: none; border: none; width: 100%;
    text-align: left; font-family: 'Inter', sans-serif;
}
.nav-item-logout:hover { background: rgba(255,50,50,0.15) !important; color: #fca5a5 !important; }

/* ── App Brand ───────────────────────────────────────────────── */
.nav-app-brand {
    padding: 16px 16px 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 12px;
    margin-bottom: 4px;
}

.nav-app-name {
    font-size: 18px;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: 0.3px;
}

.nav-app-tag {
    font-size: 12px;
    font-weight: 500;
    color: rgba(255,255,255,0.55);
    text-transform: uppercase;
    letter-spacing: 0.6px;
}

.nav-app-brand-collapsed {
    display: flex;
    justify-content: center;
    padding: 12px 0 8px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 4px;
}

.nav-app-initials {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(255,255,255,0.15);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
}