/* ==================== LAYOUT: LOGIN SCREEN ==================== */
#loginScreen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    background: rgba(10, 10, 10, 0.95);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 420px;
    backdrop-filter: blur(10px);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header h1 {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.login-header h1 span {
    color: var(--primary-color);
}

.login-header p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* ==================== LAYOUT: MAIN APP ==================== */
#mainApp {
    display: none;
    min-height: 100vh;
}

#mainApp.active {
    display: flex;
}

/* ==================== SIDEBAR ==================== */
.sidebar {
    width: 240px;
    background: rgba(10, 10, 10, 0.95);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    overflow-y: auto;
    border-right: 1px solid var(--border-color);
    z-index: 1000;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 1.5rem;
    margin: 0;
}

.sidebar-header h2 span {
    color: var(--primary-color);
}

.sidebar-menu {
    padding: 16px 0;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: rgba(220, 20, 60, 0.1);
    color: var(--text-primary);
}

.menu-item.active {
    background: rgba(220, 20, 60, 0.15);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.menu-item-icon {
    width: 20px;
    margin-right: 12px;
    font-size: 18px;
}

.menu-divider {
    padding: 16px 20px 8px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--primary-color);
    text-transform: uppercase;
    border-top: 1px solid rgba(220, 20, 60, 0.2);
    margin-top: 8px;
}

.menu-divider:first-child {
    border-top: none;
    margin-top: 0;
}

/* ==================== HEADER ==================== */
.header {
    position: fixed;
    top: 0;
    left: 240px;
    right: 0;
    height: 64px;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-color) 100%);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    z-index: 999;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, #ff1744 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

.user-name {
    font-size: 14px;
}

.user-role {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ==================== MAIN CONTENT ==================== */
.main-content {
    margin-left: 240px;
    margin-top: 64px;
    min-height: calc(100vh - 64px);
    padding: 32px;
}

.page-view {
    display: none;
}

.page-view.active {
    display: block;
}

/* ==================== HAMBURGER MENU ==================== */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
    margin-right: 16px;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

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

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    /* Mobile Login */
    .login-card {
        padding: 24px;
        margin: 16px;
    }
    
    .login-header h1 {
        font-size: 2rem;
    }
    
    /* Mobile Sidebar */
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
        z-index: 1001;
    }

    .sidebar.open {
        transform: translateX(0);
    }
    
    /* Mobile Header */
    .header {
        left: 0;
        padding: 0 16px;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .header-title {
        font-size: 1.125rem;
    }
    
    .user-name {
        display: none;
    }
    
    .user-role {
        display: none;
    }
    
    .btn-logout {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    /* Mobile Main Content */
    .main-content {
        margin-left: 0;
        padding: 16px;
    }
}

@media (max-width: 480px) {
    /* Extra small screens */
    .login-card {
        padding: 20px;
        margin: 12px;
    }
    
    .header {
        padding: 0 12px;
    }
    
    .header-title {
        font-size: 1rem;
    }
    
    .main-content {
        padding: 12px;
    }
    
    .user-avatar {
        width: 32px;
        height: 32px;
        font-size: 12px;
    }
}